subject:( cycloaddition)

Oregon State University

1. Naffziger, Michael R. Aryl acetylene substituent effects : the synthesis and application of biaryls.

Degree: MS, Chemistry, 2010, Oregon State University

URL: http://hdl.handle.net/1957/19650

► The work described herein details the synthesis and application of biphenyls that probe the effects of hydrogen, Cl / Br, and methyl substituents on the… (more)

Subjects/Keywords: cycloaddition

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APA (6^th Edition):

Naffziger, M. R. (2010). Aryl acetylene substituent effects : the synthesis and application of biaryls. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/19650

Chicago Manual of Style (16^th Edition):

Naffziger, Michael R. “Aryl acetylene substituent effects : the synthesis and application of biaryls.” 2010. Masters Thesis, Oregon State University. Accessed December 12, 2019. http://hdl.handle.net/1957/19650.

MLA Handbook (7^th Edition):

Naffziger, Michael R. “Aryl acetylene substituent effects : the synthesis and application of biaryls.” 2010. Web. 12 Dec 2019.

Vancouver:

Naffziger MR. Aryl acetylene substituent effects : the synthesis and application of biaryls. [Internet] [Masters thesis]. Oregon State University; 2010. [cited 2019 Dec 12]. Available from: http://hdl.handle.net/1957/19650.

Council of Science Editors:

Naffziger MR. Aryl acetylene substituent effects : the synthesis and application of biaryls. [Masters Thesis]. Oregon State University; 2010. Available from: http://hdl.handle.net/1957/19650

2. GUTI?RREZ COLLAR, AAR?N. Enantioselective organocatalytic cycloaddition reactions between enolisable anhydrides and imines.

Degree: School of Chemistry. Discipline of Chemistry, 2019, Trinity College Dublin

URL: http://hdl.handle.net/2262/88782

► Cycloaddition reactions between enolisable anhydrides and imines have long been known as excellent tools for the synthesis of natural products. The racemic version is well… (more)

Subjects/Keywords: Cycloaddition reactions

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APA (6^th Edition):

GUTI?RREZ COLLAR, A. (2019). Enantioselective organocatalytic cycloaddition reactions between enolisable anhydrides and imines. (Thesis). Trinity College Dublin. Retrieved from http://hdl.handle.net/2262/88782

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

GUTI?RREZ COLLAR, AAR?N. “Enantioselective organocatalytic cycloaddition reactions between enolisable anhydrides and imines.” 2019. Thesis, Trinity College Dublin. Accessed December 12, 2019. http://hdl.handle.net/2262/88782.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

GUTI?RREZ COLLAR, AAR?N. “Enantioselective organocatalytic cycloaddition reactions between enolisable anhydrides and imines.” 2019. Web. 12 Dec 2019.

Vancouver:

GUTI?RREZ COLLAR A. Enantioselective organocatalytic cycloaddition reactions between enolisable anhydrides and imines. [Internet] [Thesis]. Trinity College Dublin; 2019. [cited 2019 Dec 12]. Available from: http://hdl.handle.net/2262/88782.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

GUTI?RREZ COLLAR A. Enantioselective organocatalytic cycloaddition reactions between enolisable anhydrides and imines. [Thesis]. Trinity College Dublin; 2019. Available from: http://hdl.handle.net/2262/88782

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

3. Montagu, Aurélien. Préparation d'analoques de nucléosides et de leurs prodrogues pour une thérapie antivirale des poxvirus : Preparation of nucleoside analogues and their prodrugs targeting an antiviral therapy for poxviruses.

Degree: Docteur es, Chimie organique, 2011, Université d'Orléans

URL: http://www.theses.fr/2011ORLE2009

►

La menace bioterroriste que preprésente le virus de la variole et l’absence d’un traitement vaccinal ou curratif universel rend primordiale la mise au point d’un… (more)

Subjects/Keywords: Phosphononucléosides; Cycloaddition; Métathèse; Phosphononucléosides; Cycloaddition; Metathesis

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APA (6^th Edition):

Montagu, A. (2011). Préparation d'analoques de nucléosides et de leurs prodrogues pour une thérapie antivirale des poxvirus : Preparation of nucleoside analogues and their prodrugs targeting an antiviral therapy for poxviruses. (Doctoral Dissertation). Université d'Orléans. Retrieved from http://www.theses.fr/2011ORLE2009

Chicago Manual of Style (16^th Edition):

Montagu, Aurélien. “Préparation d'analoques de nucléosides et de leurs prodrogues pour une thérapie antivirale des poxvirus : Preparation of nucleoside analogues and their prodrugs targeting an antiviral therapy for poxviruses.” 2011. Doctoral Dissertation, Université d'Orléans. Accessed December 12, 2019. http://www.theses.fr/2011ORLE2009.

MLA Handbook (7^th Edition):

Montagu, Aurélien. “Préparation d'analoques de nucléosides et de leurs prodrogues pour une thérapie antivirale des poxvirus : Preparation of nucleoside analogues and their prodrugs targeting an antiviral therapy for poxviruses.” 2011. Web. 12 Dec 2019.

Vancouver:

Montagu A. Préparation d'analoques de nucléosides et de leurs prodrogues pour une thérapie antivirale des poxvirus : Preparation of nucleoside analogues and their prodrugs targeting an antiviral therapy for poxviruses. [Internet] [Doctoral dissertation]. Université d'Orléans; 2011. [cited 2019 Dec 12]. Available from: http://www.theses.fr/2011ORLE2009.

Council of Science Editors:

Montagu A. Préparation d'analoques de nucléosides et de leurs prodrogues pour une thérapie antivirale des poxvirus : Preparation of nucleoside analogues and their prodrugs targeting an antiviral therapy for poxviruses. [Doctoral Dissertation]. Université d'Orléans; 2011. Available from: http://www.theses.fr/2011ORLE2009

University of Alberta

4. Chan, Bryan Chi Kit. Cobalt(III)-Mediated Cycloalkenyl-Alkyne Cycloaddition and Cycloexpansion Reactions.

Degree: PhD, Department of Chemistry, 2010, University of Alberta

URL: https://era.library.ualberta.ca/files/mw22v636t

► A comprehensive investigation of cycloalkenyl-alkyne coupling reactions mediated by cobalt(III) templates is presented. The in situ derived cationic η3-cyclohexenyl complexes of cobalt(III) react with some… (more)

▼ A comprehensive investigation of cycloalkenyl-alkyne coupling reactions mediated by cobalt(III) templates is presented. The in situ derived cationic η3-cyclohexenyl complexes of cobalt(III) react with some terminal alkynes to afford either η1,η4-bicyclo[4.3.1]decadienyl or η2,η3-vinylcyclohexenyl products, depending on the type and concentration of the alkyne. The mechanism for this cyclohexenyl-alkyne cycloaddition reaction is consistent with the previously reported cobalt-mediated [3 + 2 + 2] allyl-alkyne coupling reaction. The carbon-carbon bond activation/cyclopentenyl-alkyne ring expansion process was also studied using the 1,3-di-tert-butylcyclopentadienyl cobalt system. A modified synthetic strategy to the requisite half-sandwich cobalt(I) cyclopentadiene precursor was developed using cobalt(II) acetoacetonate, avoiding the use of simple cobalt(II) halides which are prone to ligand disproportionation. Furthermore, the preparation of the cobalt(III) cyclopentenyl precursor, (t-Bu2C5H3)Co(η4-C5H6), was accomplished via hydride addition to the easily prepared cobalticenium complex [(t-Bu2C5H3)Co(C5H5)]BF4 and avoids the use of the thermally sensitive (t-Bu2C5H3)Co(ethylene)2. Disubstituted alkynes such as 2-butyne or diphenylacetylene undergo cyclopentenyl coupling to afford the corresponding η5-cycloheptadienyl products, albeit in lower yields compared to the pentamethylcyclopentadienyl cobalt system. The 1,3-di-tert-butylcyclopentadienyl ancillary ligand shows unique and unusual reactivity, coupling with tert-butylacetylene to afford a novel spiro[4.5]decatrienyl complex. Ultimately, the poor isolated yields of seven-membered products demonstrate that the disubstituted cyclopentadienyl ligand system is a poor candidate for future studies in this area. A mechanistic investigation of the cobalt-mediated carbon-carbon bond activation process was performed. Cationic cobalt η2-vinyl complexes were proposed as viable intermediates in the activation process and synthetic routes to these compounds were examined. However, the resulting vinyl complexes were unstable and could not be directly isolated and characterized. Preparation of cobalt vinyl complexes in the presence of cycloalkadienes did not furnish the expected cycloexpanded products, suggesting alternative routes to the cobalt vinyl intermediates are necessary. During the course of the mechanistic investigation, a high-yielding alternative synthetic procedure for (C5Me5)Co(η4-butadiene) from the easily prepared precursor, [(C5Me5)CoI2]n, was found, circumventing the use of the thermally sensitive (C5Me5)Co(ethylene)2.

Subjects/Keywords: cycloexpansion; cycloalkenyl; cycloaddition

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APA (6^th Edition):

Chan, B. C. K. (2010). Cobalt(III)-Mediated Cycloalkenyl-Alkyne Cycloaddition and Cycloexpansion Reactions. (Doctoral Dissertation). University of Alberta. Retrieved from https://era.library.ualberta.ca/files/mw22v636t

Chicago Manual of Style (16^th Edition):

Chan, Bryan Chi Kit. “Cobalt(III)-Mediated Cycloalkenyl-Alkyne Cycloaddition and Cycloexpansion Reactions.” 2010. Doctoral Dissertation, University of Alberta. Accessed December 12, 2019. https://era.library.ualberta.ca/files/mw22v636t.

MLA Handbook (7^th Edition):

Chan, Bryan Chi Kit. “Cobalt(III)-Mediated Cycloalkenyl-Alkyne Cycloaddition and Cycloexpansion Reactions.” 2010. Web. 12 Dec 2019.

Vancouver:

Chan BCK. Cobalt(III)-Mediated Cycloalkenyl-Alkyne Cycloaddition and Cycloexpansion Reactions. [Internet] [Doctoral dissertation]. University of Alberta; 2010. [cited 2019 Dec 12]. Available from: https://era.library.ualberta.ca/files/mw22v636t.

Council of Science Editors:

Chan BCK. Cobalt(III)-Mediated Cycloalkenyl-Alkyne Cycloaddition and Cycloexpansion Reactions. [Doctoral Dissertation]. University of Alberta; 2010. Available from: https://era.library.ualberta.ca/files/mw22v636t

5. Santosh L Gaonkar. Synthesis of biologically active heterocycles via cycloaddition reactions; -.

Degree: Chemistry, 2006, University of Mysore

URL: http://shodhganga.inflibnet.ac.in/handle/10603/15929

►

The thesis describes the synthesis of 1,2-oxazines, fused ring oxazines, newlinetetrahydropyridazines, fused ring pyridazines via [4+2] cycloaddition reactions newlinewhile 1,3,4-oxadiazoles, 2-isoxazolines, fused ring imidazoles etc… (more)

Subjects/Keywords: Chemistry; cycloaddition reactions; heterocycles

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APA (6^th Edition):

Gaonkar, S. L. (2006). Synthesis of biologically active heterocycles via cycloaddition reactions; -. (Thesis). University of Mysore. Retrieved from http://shodhganga.inflibnet.ac.in/handle/10603/15929

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Gaonkar, Santosh L. “Synthesis of biologically active heterocycles via cycloaddition reactions; -.” 2006. Thesis, University of Mysore. Accessed December 12, 2019. http://shodhganga.inflibnet.ac.in/handle/10603/15929.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Gaonkar, Santosh L. “Synthesis of biologically active heterocycles via cycloaddition reactions; -.” 2006. Web. 12 Dec 2019.

Vancouver:

Gaonkar SL. Synthesis of biologically active heterocycles via cycloaddition reactions; -. [Internet] [Thesis]. University of Mysore; 2006. [cited 2019 Dec 12]. Available from: http://shodhganga.inflibnet.ac.in/handle/10603/15929.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Gaonkar SL. Synthesis of biologically active heterocycles via cycloaddition reactions; -. [Thesis]. University of Mysore; 2006. Available from: http://shodhganga.inflibnet.ac.in/handle/10603/15929

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

NSYSU

6. Huang, Chang-Gin. An Efficient Synthesis of Î³-Substituted Î±,Î²-Unsaturated Î´-Lactams. Formal Synthesis of (Â±)-Protoemetinol.

Degree: Master, Chemistry, 2002, NSYSU

URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0618102-094444

Î³-Substituted Î±,Î²-unsaturated Î´-lactams was synthesized from Î±-sulfinyl acetamides in three steps. Formal synthesis of (Â±)-Protoemetinol was also reported. Advisors/Committee Members: Chou, C. H. (chair), Nein-Chen Chang (committee member), none (chair).

Subjects/Keywords: cycloaddition reaction

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APA (6^th Edition):

Huang, C. (2002). An Efficient Synthesis of Î³-Substituted Î±,Î²-Unsaturated Î´-Lactams. Formal Synthesis of (Â±)-Protoemetinol. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0618102-094444

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Huang, Chang-Gin. “An Efficient Synthesis of Î³-Substituted Î±,Î²-Unsaturated Î´-Lactams. Formal Synthesis of (Â±)-Protoemetinol.” 2002. Thesis, NSYSU. Accessed December 12, 2019. http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0618102-094444.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Huang, Chang-Gin. “An Efficient Synthesis of Î³-Substituted Î±,Î²-Unsaturated Î´-Lactams. Formal Synthesis of (Â±)-Protoemetinol.” 2002. Web. 12 Dec 2019.

Vancouver:

Huang C. An Efficient Synthesis of Î³-Substituted Î±,Î²-Unsaturated Î´-Lactams. Formal Synthesis of (Â±)-Protoemetinol. [Internet] [Thesis]. NSYSU; 2002. [cited 2019 Dec 12]. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0618102-094444.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Huang C. An Efficient Synthesis of Î³-Substituted Î±,Î²-Unsaturated Î´-Lactams. Formal Synthesis of (Â±)-Protoemetinol. [Thesis]. NSYSU; 2002. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0618102-094444

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Université du Québec à Montréal

7. Zaghdane, Helmi. Études synthétiques de la (-)-kopsine via un réarrangement d'Ireland-Claisen et une cycloaddition de Diels-Alder intramoléculaire.

Degree: 2008, Université du Québec à Montréal

URL: http://www.archipel.uqam.ca/1322/1/M10373.pdf

► La (-)-kopsine appartient à la famille des alcaloïdes aspidofractinine. Isolée pour la première fois en 1890 par l'équipe du professeur Ber à partir de plantes… (more)

▼ La (-)-kopsine appartient à la famille des alcaloïdes aspidofractinine. Isolée pour la première fois en 1890 par l'équipe du professeur Ber à partir de plantes du genre Kopsia (Apocynaceae), qu'on retrouve abondamment dans le sud-est de l'Asie et qui sont connues dans la pharmacopée traditionnelle. En Chine, la Kopsia Officinalis est utilisée contre les douleurs rhumatismales tandis qu'en Malaisie, des plantes comme la Kopsia profunda, la Kopsia larutensis et la Kopsia teoi ont été utilisées comme antihypertenseurs, activité confirmée en laboratoire sur des rats normotendus. La synthèse de la kopsine et d'analogues s'avère donc intéressante au point de vue pharmacologique. Mais c'est au point de vue de la chimie que les défis sont à relever: la kopsine est une molécule complexe, qui comporte 7 cycles et 6 centres chiraux, dont 4 tétrasubstitués. La première synthèse énantiosélective de la (-)-kopsine qui vient d'être amorcée comporte une trentaine d'étapes. La première étape clé consiste en un réarrangement [3,3] d'Ireland-Claisen qui va permettre la formation du premier centre quaternaire de la molécule avec un transfert contrôlé de la chiralité en position 3 d'un dérivé oxindole. La deuxième étape clé consiste en une condensation d'iminiums en cascade, qui doit mener à la fomation de 2 cycles en une étape. Une troisième étape clé consiste en une réaction de cycloaddition de Diels-Alder intramoléculaire qui devra permettre de former les 2 derniers cycles de la (-)kopsine. Jusqu'à présent, deux volets de la synthèse ont été explorés. Dans un premier volet, l'iodooxindole a été couplé à un aldéhyde chiral dérivé de l'acide lactique par une condensation aldolique. La fonction alcool a été acylée avec différents chlorures d'acides et plusieurs conditions de réaction ont été essayées pour déclencher la première étape clé de la synthèse, soit le réarrangement [3,3]. Par ailleurs, l'application des conditions acides de Johnson a mis au jour une nouvelle réaction de cyclopropanation hautement stéréosélective. Dans un autre volet, la synthèse d'un substrat modèle a été amorcée pour éventuellement étudier la réaction de Diels-Alder et ainsi anticiper d'éventuels problèmes reliés à cette étape clé. La synthèse du composé modèle a débuté avec l'oxindole, qui a été allylé en position 3 puis alkylé avec le bromoacétate de méthyle. L'ester a été réduit, l'alcool obtenu a été protégé, le bromure d'allylmagnésium a été additionné sur le carbonyle du lactame et le diène résultant a été impliqué dans une réaction de cyclisation par métathèse d'alcène. Il reste quelques étapes à franchir, tel le couplage avec la contrepartie diénophile, pour que le composé tricyclique obtenu mène au substrat modèle de la cycloaddition de Diels-Alder intramoléculaire. ______________________________________________________________________________ MOTS-CLÉS DE L’AUTEUR : (-)-kopsine, Condensation aldolique, Cycloaddition de Diels-Alder Intramoléculaire, Réarrangement d'Ireland-Claisen, Oxindole, Condensation d'iminiums en cascade, Réaction de…

Subjects/Keywords: Alcaloïde; Cycloaddition; Kopsine; Synthèse chimique

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Zaghdane, H. (2008). Études synthétiques de la (-)-kopsine via un réarrangement d'Ireland-Claisen et une cycloaddition de Diels-Alder intramoléculaire. (Thesis). Université du Québec à Montréal. Retrieved from http://www.archipel.uqam.ca/1322/1/M10373.pdf

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Zaghdane, Helmi. “Études synthétiques de la (-)-kopsine via un réarrangement d'Ireland-Claisen et une cycloaddition de Diels-Alder intramoléculaire.” 2008. Thesis, Université du Québec à Montréal. Accessed December 12, 2019. http://www.archipel.uqam.ca/1322/1/M10373.pdf.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Zaghdane, Helmi. “Études synthétiques de la (-)-kopsine via un réarrangement d'Ireland-Claisen et une cycloaddition de Diels-Alder intramoléculaire.” 2008. Web. 12 Dec 2019.

Vancouver:

Zaghdane H. Études synthétiques de la (-)-kopsine via un réarrangement d'Ireland-Claisen et une cycloaddition de Diels-Alder intramoléculaire. [Internet] [Thesis]. Université du Québec à Montréal; 2008. [cited 2019 Dec 12]. Available from: http://www.archipel.uqam.ca/1322/1/M10373.pdf.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Zaghdane H. Études synthétiques de la (-)-kopsine via un réarrangement d'Ireland-Claisen et une cycloaddition de Diels-Alder intramoléculaire. [Thesis]. Université du Québec à Montréal; 2008. Available from: http://www.archipel.uqam.ca/1322/1/M10373.pdf

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

8. Rajotte, Isabelle. Efforts vers la synthèse totale de la cylindrocarine par cycloaddition intramoléculaire impliquant des aminocarbènes de chrome.

Degree: M. Sc., Chimie, 2016, Université de Sherbrooke

URL: http://www.collectionscanada.gc.ca/obj/thesescanada/vol2/QSHERU/TC-QSHERU-11143_8742.pdf ; http://savoirs.usherbrooke.ca/bitstream/11143/8742/3/Rajotte_Isabelle_MSc_2016.pdf

► Des travaux précédents ont explorés la réactivité des aminocarbènes de chrome. Dans cet ouvrage, il sera question d’appliquer cette réactivité à la synthèse de la… (more)

Subjects/Keywords: Cylindrocarine; Aminocarbène; Cycloaddition; Chrome; Aspidosperma

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APA (6^th Edition):

Rajotte, I. (2016). Efforts vers la synthèse totale de la cylindrocarine par cycloaddition intramoléculaire impliquant des aminocarbènes de chrome. (Masters Thesis). Université de Sherbrooke. Retrieved from http://www.collectionscanada.gc.ca/obj/thesescanada/vol2/QSHERU/TC-QSHERU-11143_8742.pdf ; http://savoirs.usherbrooke.ca/bitstream/11143/8742/3/Rajotte_Isabelle_MSc_2016.pdf

Chicago Manual of Style (16^th Edition):

Rajotte, Isabelle. “Efforts vers la synthèse totale de la cylindrocarine par cycloaddition intramoléculaire impliquant des aminocarbènes de chrome.” 2016. Masters Thesis, Université de Sherbrooke. Accessed December 12, 2019. http://www.collectionscanada.gc.ca/obj/thesescanada/vol2/QSHERU/TC-QSHERU-11143_8742.pdf ; http://savoirs.usherbrooke.ca/bitstream/11143/8742/3/Rajotte_Isabelle_MSc_2016.pdf.

MLA Handbook (7^th Edition):

Rajotte, Isabelle. “Efforts vers la synthèse totale de la cylindrocarine par cycloaddition intramoléculaire impliquant des aminocarbènes de chrome.” 2016. Web. 12 Dec 2019.

Vancouver:

Rajotte I. Efforts vers la synthèse totale de la cylindrocarine par cycloaddition intramoléculaire impliquant des aminocarbènes de chrome. [Internet] [Masters thesis]. Université de Sherbrooke; 2016. [cited 2019 Dec 12]. Available from: http://www.collectionscanada.gc.ca/obj/thesescanada/vol2/QSHERU/TC-QSHERU-11143_8742.pdf ; http://savoirs.usherbrooke.ca/bitstream/11143/8742/3/Rajotte_Isabelle_MSc_2016.pdf.

Council of Science Editors:

Rajotte I. Efforts vers la synthèse totale de la cylindrocarine par cycloaddition intramoléculaire impliquant des aminocarbènes de chrome. [Masters Thesis]. Université de Sherbrooke; 2016. Available from: http://www.collectionscanada.gc.ca/obj/thesescanada/vol2/QSHERU/TC-QSHERU-11143_8742.pdf ; http://savoirs.usherbrooke.ca/bitstream/11143/8742/3/Rajotte_Isabelle_MSc_2016.pdf

Université de Sherbrooke

9. Rajotte, Isabelle. Efforts vers la synthèse totale de la cylindrocarine par cycloaddition intramoléculaire impliquant des aminocarbènes de chrome .

Degree: 2016, Université de Sherbrooke

URL: http://hdl.handle.net/11143/8742

► Des travaux précédents ont explorés la réactivité des aminocarbènes de chrome. Dans cet ouvrage, il sera question d’appliquer cette réactivité à la synthèse de la… (more)

Subjects/Keywords: Cylindrocarine; Aminocarbène; Cycloaddition; Chrome; Aspidosperma

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Rajotte, I. (2016). Efforts vers la synthèse totale de la cylindrocarine par cycloaddition intramoléculaire impliquant des aminocarbènes de chrome . (Masters Thesis). Université de Sherbrooke. Retrieved from http://hdl.handle.net/11143/8742

Chicago Manual of Style (16^th Edition):

Rajotte, Isabelle. “Efforts vers la synthèse totale de la cylindrocarine par cycloaddition intramoléculaire impliquant des aminocarbènes de chrome .” 2016. Masters Thesis, Université de Sherbrooke. Accessed December 12, 2019. http://hdl.handle.net/11143/8742.

MLA Handbook (7^th Edition):

Rajotte, Isabelle. “Efforts vers la synthèse totale de la cylindrocarine par cycloaddition intramoléculaire impliquant des aminocarbènes de chrome .” 2016. Web. 12 Dec 2019.

Vancouver:

Rajotte I. Efforts vers la synthèse totale de la cylindrocarine par cycloaddition intramoléculaire impliquant des aminocarbènes de chrome . [Internet] [Masters thesis]. Université de Sherbrooke; 2016. [cited 2019 Dec 12]. Available from: http://hdl.handle.net/11143/8742.

Council of Science Editors:

Rajotte I. Efforts vers la synthèse totale de la cylindrocarine par cycloaddition intramoléculaire impliquant des aminocarbènes de chrome . [Masters Thesis]. Université de Sherbrooke; 2016. Available from: http://hdl.handle.net/11143/8742

Université de Sherbrooke

10. D. Lefebvre, Louis-Philippe. Développement d'une réaction de cycloaddition (4+1) intramoléculaire formelle impliquant des aminocarbènes de chrome .

Degree: 2012, Université de Sherbrooke

URL: http://hdl.handle.net/11143/5752

► Ce mémoire résume les percées effectuées vers le développement d'une réaction de cycloaddition (4+1) intramoléculaire formelle entre des aminocarbènes de chrome et des diènes. Une… (more)

Subjects/Keywords: Cyclopentène; Cycloaddition; Diène; Fischer; Aminocarbène

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APA (6^th Edition):

D. Lefebvre, L. (2012). Développement d'une réaction de cycloaddition (4+1) intramoléculaire formelle impliquant des aminocarbènes de chrome . (Masters Thesis). Université de Sherbrooke. Retrieved from http://hdl.handle.net/11143/5752

Chicago Manual of Style (16^th Edition):

D. Lefebvre, Louis-Philippe. “Développement d'une réaction de cycloaddition (4+1) intramoléculaire formelle impliquant des aminocarbènes de chrome .” 2012. Masters Thesis, Université de Sherbrooke. Accessed December 12, 2019. http://hdl.handle.net/11143/5752.

MLA Handbook (7^th Edition):

D. Lefebvre, Louis-Philippe. “Développement d'une réaction de cycloaddition (4+1) intramoléculaire formelle impliquant des aminocarbènes de chrome .” 2012. Web. 12 Dec 2019.

Vancouver:

D. Lefebvre L. Développement d'une réaction de cycloaddition (4+1) intramoléculaire formelle impliquant des aminocarbènes de chrome . [Internet] [Masters thesis]. Université de Sherbrooke; 2012. [cited 2019 Dec 12]. Available from: http://hdl.handle.net/11143/5752.

Council of Science Editors:

D. Lefebvre L. Développement d'une réaction de cycloaddition (4+1) intramoléculaire formelle impliquant des aminocarbènes de chrome . [Masters Thesis]. Université de Sherbrooke; 2012. Available from: http://hdl.handle.net/11143/5752

University of Ottawa

11. Ranasinghe Gamage, Indeewari. New Reactivity Involving N-Isothiocyanates: Aminothiocarbonylation and [3+2] Cycloadditions to Form Molecules Containing NNCS Motifs .

Degree: 2017, University of Ottawa

URL: http://hdl.handle.net/10393/36042

► Nitrogen-containing heterocycles are of vital importance for the pharmaceutical and agrochemical industries. The Beauchemin group has been studying rare, amphoteric nitrogen-substituted isocyanates over the past… (more)

Subjects/Keywords: aminothiocarbonylation; heterocycles; cycloaddition; isothiocyanates

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APA (6^th Edition):

Ranasinghe Gamage, I. (2017). New Reactivity Involving N-Isothiocyanates: Aminothiocarbonylation and [3+2] Cycloadditions to Form Molecules Containing NNCS Motifs . (Thesis). University of Ottawa. Retrieved from http://hdl.handle.net/10393/36042

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Ranasinghe Gamage, Indeewari. “New Reactivity Involving N-Isothiocyanates: Aminothiocarbonylation and [3+2] Cycloadditions to Form Molecules Containing NNCS Motifs .” 2017. Thesis, University of Ottawa. Accessed December 12, 2019. http://hdl.handle.net/10393/36042.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Ranasinghe Gamage, Indeewari. “New Reactivity Involving N-Isothiocyanates: Aminothiocarbonylation and [3+2] Cycloadditions to Form Molecules Containing NNCS Motifs .” 2017. Web. 12 Dec 2019.

Vancouver:

Ranasinghe Gamage I. New Reactivity Involving N-Isothiocyanates: Aminothiocarbonylation and [3+2] Cycloadditions to Form Molecules Containing NNCS Motifs . [Internet] [Thesis]. University of Ottawa; 2017. [cited 2019 Dec 12]. Available from: http://hdl.handle.net/10393/36042.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Ranasinghe Gamage I. New Reactivity Involving N-Isothiocyanates: Aminothiocarbonylation and [3+2] Cycloadditions to Form Molecules Containing NNCS Motifs . [Thesis]. University of Ottawa; 2017. Available from: http://hdl.handle.net/10393/36042

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Vermont

12. Draghici, Cristian. Discovery of a Novel Ring Fragmentation Reaction; Efficient Preparation of Tethered Aldehyde Ynoates and N-Containing Heterocycles;Radical Addition Approach to Asymmetric Amine Synthesis.

Degree: PhD, Chemistry, 2009, University of Vermont

URL: https://scholarworks.uvm.edu/graddis/70

► This dissertation describes the development of a novel ring fragmentation reaction in which cyclic γ-silyloxy-β-hydroxy-α-diazoesters undergo efficient rupture of the Cβ−Cγ bond when treated with… (more)

Subjects/Keywords: intramolecular dipolar cycloaddition; zaomethine ylides

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APA (6^th Edition):

Draghici, C. (2009). Discovery of a Novel Ring Fragmentation Reaction; Efficient Preparation of Tethered Aldehyde Ynoates and N-Containing Heterocycles;Radical Addition Approach to Asymmetric Amine Synthesis. (Doctoral Dissertation). University of Vermont. Retrieved from https://scholarworks.uvm.edu/graddis/70

Chicago Manual of Style (16^th Edition):

Draghici, Cristian. “Discovery of a Novel Ring Fragmentation Reaction; Efficient Preparation of Tethered Aldehyde Ynoates and N-Containing Heterocycles;Radical Addition Approach to Asymmetric Amine Synthesis.” 2009. Doctoral Dissertation, University of Vermont. Accessed December 12, 2019. https://scholarworks.uvm.edu/graddis/70.

MLA Handbook (7^th Edition):

Draghici, Cristian. “Discovery of a Novel Ring Fragmentation Reaction; Efficient Preparation of Tethered Aldehyde Ynoates and N-Containing Heterocycles;Radical Addition Approach to Asymmetric Amine Synthesis.” 2009. Web. 12 Dec 2019.

Vancouver:

Draghici C. Discovery of a Novel Ring Fragmentation Reaction; Efficient Preparation of Tethered Aldehyde Ynoates and N-Containing Heterocycles;Radical Addition Approach to Asymmetric Amine Synthesis. [Internet] [Doctoral dissertation]. University of Vermont; 2009. [cited 2019 Dec 12]. Available from: https://scholarworks.uvm.edu/graddis/70.

Council of Science Editors:

Draghici C. Discovery of a Novel Ring Fragmentation Reaction; Efficient Preparation of Tethered Aldehyde Ynoates and N-Containing Heterocycles;Radical Addition Approach to Asymmetric Amine Synthesis. [Doctoral Dissertation]. University of Vermont; 2009. Available from: https://scholarworks.uvm.edu/graddis/70

Brock University

13. Bissett, Tyler. Explorations of Intramolecular [5+2] Cycloadditions of Ring-Constrained Vinylcyclopropanes .

Degree: Department of Chemistry, 2014, Brock University

URL: http://hdl.handle.net/10464/5741

► The first example of a [5+2] cycloaddition reaction wherein the olefin of the vinylcyclopropyl moiety is constrained in a carbocycle was explored, and possible reasons… (more)

Subjects/Keywords: cycloaddition reaction; vinylcyclopropyl moiety

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APA (6^th Edition):

Bissett, T. (2014). Explorations of Intramolecular [5+2] Cycloadditions of Ring-Constrained Vinylcyclopropanes . (Thesis). Brock University. Retrieved from http://hdl.handle.net/10464/5741

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Bissett, Tyler. “Explorations of Intramolecular [5+2] Cycloadditions of Ring-Constrained Vinylcyclopropanes .” 2014. Thesis, Brock University. Accessed December 12, 2019. http://hdl.handle.net/10464/5741.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Bissett, Tyler. “Explorations of Intramolecular [5+2] Cycloadditions of Ring-Constrained Vinylcyclopropanes .” 2014. Web. 12 Dec 2019.

Vancouver:

Bissett T. Explorations of Intramolecular [5+2] Cycloadditions of Ring-Constrained Vinylcyclopropanes . [Internet] [Thesis]. Brock University; 2014. [cited 2019 Dec 12]. Available from: http://hdl.handle.net/10464/5741.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Bissett T. Explorations of Intramolecular [5+2] Cycloadditions of Ring-Constrained Vinylcyclopropanes . [Thesis]. Brock University; 2014. Available from: http://hdl.handle.net/10464/5741

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Guelph

14. Haner, Jamie. Synthesis of Substituted Oxabenzonorbornadienes and their Reactions .

Degree: 2011, University of Guelph

URL: https://atrium.lib.uoguelph.ca/xmlui/handle/10214/2958

► This thesis describes investigations on the topic of the versatile organic scaffold, 7-oxabenzonorbornadiene. The synthesis of 2-alkyl substituted furans via iron-catalyzed coupling of Grignard reagents… (more)

Subjects/Keywords: Oxabenzonorbornadiene; Cycloaddition; Organic Chemistry; Synthesis

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APA (6^th Edition):

Haner, J. (2011). Synthesis of Substituted Oxabenzonorbornadienes and their Reactions . (Thesis). University of Guelph. Retrieved from https://atrium.lib.uoguelph.ca/xmlui/handle/10214/2958

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Haner, Jamie. “Synthesis of Substituted Oxabenzonorbornadienes and their Reactions .” 2011. Thesis, University of Guelph. Accessed December 12, 2019. https://atrium.lib.uoguelph.ca/xmlui/handle/10214/2958.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Haner, Jamie. “Synthesis of Substituted Oxabenzonorbornadienes and their Reactions .” 2011. Web. 12 Dec 2019.

Vancouver:

Haner J. Synthesis of Substituted Oxabenzonorbornadienes and their Reactions . [Internet] [Thesis]. University of Guelph; 2011. [cited 2019 Dec 12]. Available from: https://atrium.lib.uoguelph.ca/xmlui/handle/10214/2958.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Haner J. Synthesis of Substituted Oxabenzonorbornadienes and their Reactions . [Thesis]. University of Guelph; 2011. Available from: https://atrium.lib.uoguelph.ca/xmlui/handle/10214/2958

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Guelph

15. Petko, Dina. Ruthenium Catalyzed Bis-Homo-Diels-Alder [2+2+2] Cycloaddition .

Degree: 2018, University of Guelph

URL: https://atrium.lib.uoguelph.ca/xmlui/handle/10214/14094

► Synthetic organic chemistry is an integral part of pharmaceutical design and development, which builds upon past literature to create molecules that mimic nature. The synthesis… (more)

Subjects/Keywords: Ruthenium; catalyzed; cycloaddition; Diels-Alder

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APA (6^th Edition):

Petko, D. (2018). Ruthenium Catalyzed Bis-Homo-Diels-Alder [2+2+2] Cycloaddition . (Thesis). University of Guelph. Retrieved from https://atrium.lib.uoguelph.ca/xmlui/handle/10214/14094

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Petko, Dina. “Ruthenium Catalyzed Bis-Homo-Diels-Alder [2+2+2] Cycloaddition .” 2018. Thesis, University of Guelph. Accessed December 12, 2019. https://atrium.lib.uoguelph.ca/xmlui/handle/10214/14094.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Petko, Dina. “Ruthenium Catalyzed Bis-Homo-Diels-Alder [2+2+2] Cycloaddition .” 2018. Web. 12 Dec 2019.

Vancouver:

Petko D. Ruthenium Catalyzed Bis-Homo-Diels-Alder [2+2+2] Cycloaddition . [Internet] [Thesis]. University of Guelph; 2018. [cited 2019 Dec 12]. Available from: https://atrium.lib.uoguelph.ca/xmlui/handle/10214/14094.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Petko D. Ruthenium Catalyzed Bis-Homo-Diels-Alder [2+2+2] Cycloaddition . [Thesis]. University of Guelph; 2018. Available from: https://atrium.lib.uoguelph.ca/xmlui/handle/10214/14094

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Texas – Austin

16. Sharma Poudel, Binit. Ruthenium catalyzed diol-diene cycloaddition and progress toward total synthesis of andrographolide.

Degree: MA, Chemistry, 2019, University of Texas – Austin

URL: http://dx.doi.org/10.26153/tsw/5399

► In the first chapter, an example of highly exo-selective ruthenium(0) catalyzed transfer hydrogenative cycloaddition is described. These ruthenium catalyzed reactions are analogous to traditional Diels-Alder… (more)

Subjects/Keywords: Cycloaddition; Andrographolide; Homo-Diels-Alder

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APA (6^th Edition):

Sharma Poudel, B. (2019). Ruthenium catalyzed diol-diene cycloaddition and progress toward total synthesis of andrographolide. (Masters Thesis). University of Texas – Austin. Retrieved from http://dx.doi.org/10.26153/tsw/5399

Chicago Manual of Style (16^th Edition):

Sharma Poudel, Binit. “Ruthenium catalyzed diol-diene cycloaddition and progress toward total synthesis of andrographolide.” 2019. Masters Thesis, University of Texas – Austin. Accessed December 12, 2019. http://dx.doi.org/10.26153/tsw/5399.

MLA Handbook (7^th Edition):

Sharma Poudel, Binit. “Ruthenium catalyzed diol-diene cycloaddition and progress toward total synthesis of andrographolide.” 2019. Web. 12 Dec 2019.

Vancouver:

Sharma Poudel B. Ruthenium catalyzed diol-diene cycloaddition and progress toward total synthesis of andrographolide. [Internet] [Masters thesis]. University of Texas – Austin; 2019. [cited 2019 Dec 12]. Available from: http://dx.doi.org/10.26153/tsw/5399.

Council of Science Editors:

Sharma Poudel B. Ruthenium catalyzed diol-diene cycloaddition and progress toward total synthesis of andrographolide. [Masters Thesis]. University of Texas – Austin; 2019. Available from: http://dx.doi.org/10.26153/tsw/5399

17. LOCKETT-WALTERS, BRUCE. The Tamura Cycloaddition: Mechanism and Enantiocontrol.

Degree: School of Chemistry. Discipline of Chemistry, 2019, Trinity College Dublin

URL: http://hdl.handle.net/2262/88750

► This thesis documents attempts to employ succinimide derivatives as ?anhydride surrogates? in the organocatalytic cycloaddition between aryl succinic anhydrides and various electrophiles previously developed in… (more)

▼ This thesis documents attempts to employ succinimide derivatives as ?anhydride surrogates? in the organocatalytic cycloaddition between aryl succinic anhydrides and various electrophiles previously developed in our research group. Although such a process remains elusive, valuable insight into the required substrate reactivity has been gained. Thirty-eight years on from the original publication of the Tamura cycloaddition between homophthalic anhydride and activated alkenes/alkynes, a combined experimental and computational investigation has revealed the base-catalysed reaction previously thought of as a Diels-Alder type process proceeds via a stepwise mechanism involving conjugate addition and ring closure ? verified by both DFT calculations and the isolation of an intermediate Michael-type adduct which represents the first example of a catalytic ?- substitution reaction of anhydrides. The calculated reaction pathway was validated through the experimental confirmation of a theoretical prediction that a cyclisation step resistant to catalysis by Hu?nig?s base could smoothly occur in the presence of a smaller amine. Succinic anhydrides are also compatible with the process and react with maleimides to afford chiral ?-substituted anhydride addition products of considerable synthetic potential. Cinchona alkaloid derived organocatalysts were later found to promote this reaction enantioselectively. The Michael adduct formed could be derivatised via aminolysis of the anhydride moiety at low temperature, which allowed the formation of a bis-imide structure bearing two contiguous stereocentres (one all carbon quaternary) in near optical purity. The scope of the reaction with respect to the anhydride component was later extended; however only aryl succinic anhydrides substituted with highly electron withdrawing groups were found to react at a practical rate. A number of substituted aryl succinic anhydrides synthesised for extension of the scope of the catalytic ?-substitution were fortuitously employed in an asymmetric organocatalytic cycloaddition with imines to afford substituted ?-lactams in high levels of optical purity. Advisors/Committee Members: Connon, Stephen.

Subjects/Keywords: Succinimide derivatives; Tamura cycloaddition

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APA (6^th Edition):

LOCKETT-WALTERS, B. (2019). The Tamura Cycloaddition: Mechanism and Enantiocontrol. (Thesis). Trinity College Dublin. Retrieved from http://hdl.handle.net/2262/88750

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

LOCKETT-WALTERS, BRUCE. “The Tamura Cycloaddition: Mechanism and Enantiocontrol.” 2019. Thesis, Trinity College Dublin. Accessed December 12, 2019. http://hdl.handle.net/2262/88750.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

LOCKETT-WALTERS, BRUCE. “The Tamura Cycloaddition: Mechanism and Enantiocontrol.” 2019. Web. 12 Dec 2019.

Vancouver:

LOCKETT-WALTERS B. The Tamura Cycloaddition: Mechanism and Enantiocontrol. [Internet] [Thesis]. Trinity College Dublin; 2019. [cited 2019 Dec 12]. Available from: http://hdl.handle.net/2262/88750.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

LOCKETT-WALTERS B. The Tamura Cycloaddition: Mechanism and Enantiocontrol. [Thesis]. Trinity College Dublin; 2019. Available from: http://hdl.handle.net/2262/88750

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Bradford

18. Abdullahi, Mohamed Hussain Haji. General method for the synthesis of pseudodisaccharides : Diels-Alder approach to the synthesis of pseudodisaccharides.

Degree: 2010, University of Bradford

URL: http://hdl.handle.net/10454/4887

► This thesis describes a new method for the synthesis of pseudodisaccharides containing a carbasugar analogue attached to a "true" sugar. The methodology is based on… (more)

Subjects/Keywords: 547.78; Pseudodisaccharides; Synthesis; Diels-Alder cycloaddition; Sugars; Cytotoxicity; Carbasugar; Cycloaddition

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APA (6^th Edition):

Abdullahi, M. H. H. (2010). General method for the synthesis of pseudodisaccharides : Diels-Alder approach to the synthesis of pseudodisaccharides. (Doctoral Dissertation). University of Bradford. Retrieved from http://hdl.handle.net/10454/4887

Chicago Manual of Style (16^th Edition):

Abdullahi, Mohamed Hussain Haji. “General method for the synthesis of pseudodisaccharides : Diels-Alder approach to the synthesis of pseudodisaccharides.” 2010. Doctoral Dissertation, University of Bradford. Accessed December 12, 2019. http://hdl.handle.net/10454/4887.

MLA Handbook (7^th Edition):

Abdullahi, Mohamed Hussain Haji. “General method for the synthesis of pseudodisaccharides : Diels-Alder approach to the synthesis of pseudodisaccharides.” 2010. Web. 12 Dec 2019.

Vancouver:

Abdullahi MHH. General method for the synthesis of pseudodisaccharides : Diels-Alder approach to the synthesis of pseudodisaccharides. [Internet] [Doctoral dissertation]. University of Bradford; 2010. [cited 2019 Dec 12]. Available from: http://hdl.handle.net/10454/4887.

Council of Science Editors:

Abdullahi MHH. General method for the synthesis of pseudodisaccharides : Diels-Alder approach to the synthesis of pseudodisaccharides. [Doctoral Dissertation]. University of Bradford; 2010. Available from: http://hdl.handle.net/10454/4887

Université Paris-Sud – Paris XI

19. Laurent, Grégory. Réactions de cycloadditions énantiosélectives catalysées par des dérivés d’acides de Brønsted chiraux : Enantioselectives cycloadditions reactions catalyzed by chirals Brønsted acids derivatives.

Degree: Docteur es, Chimie, 2014, Université Paris-Sud – Paris XI

URL: http://www.theses.fr/2014PA112419

►

Ces travaux de thèse avaient pour objectif la synthèse asymétrique d’hétérocycles énantioenrichis par des méthodes à hautes valeurs ajoutées. Pour cela des catalyseurs ont été… (more)

▼

Ces travaux de thèse avaient pour objectif la synthèse asymétrique d’hétérocycles énantioenrichis par des méthodes à hautes valeurs ajoutées. Pour cela des catalyseurs ont été employés dans des réactions de cycloaddition. D’une part, l’organocatalyse asymétrique permet d’utiliser un matériel chiral peu coûteux en faible quantité pour générer des produits chiraux, d’autre part, les réactions de cycloadditions permettent une économie d’atome certaine et la création de plusieurs liaisons en une réaction.La première partie de cette thèse concerne des réactions de cycloadditions d’aza-Diels-Alder à demande inverse en électrons. Ces travaux mettent en jeu des 1-Azadiènes et des énecarbamates pour générer des tétrahydropyridines possédant 3 centres stéréogènes contigus.Les produits ont été obtenus sous la forme d’un seul diastéréomère avec de bons rendements et de bons excès énantiomérique. La modification des substrats sur diverses positions a été possible sans influencer l’efficacité de la réaction.Dans la seconde partie, une réaction de cycloaddition entre des quinones et des énecarbamates a été étudiée. L’utilisation d’un acide phosphorique à squelette SPINOL s’est révélée très efficaces, menant à des 2,3-Dihydrobenzofuranes optiquement actifs. Les produits sont isolés avec d’excellents rendements et excès énantiomériques, mais des ratios diastéréomériques faibles. Ces derniers peuvent être améliorés en engageant des énethiocarbamates.Une cascade réactionnelle peut aussi être effectuée en formant la quinone in situ à l’aide d’un réactif hypervalent iodé. L’étendue de notre cycloaddition ainsi que sa variante initié par du PIDA est conséquente mais reste encore à améliorer. Différentes hydroquinones seront ainsi évaluées. Les cycloadduits seront ultérieurement transformés de manière à valoriser cette méthodologie. Les configurations relatives et absolues des centres asymétriques formés seront déterminées avec précision par cliché de diffraction des rayons X. Ces pistes sont en cours d’étude et de réalisation au laboratoire.Enfin, la dernière partie concerne une réaction de cycloaddition 1,3-Dipolaire entre des nitrones et des énecarbamates. Si l’utilisation d’un acide phosphorique ne s’est pas révélée efficace, l’utilisation d’un phosphate de cuivre est en revanche convaincante. Initialement, la réaction a montré d’excellents résultats, malheureusement non reproductibles. Une optimisation rigoureuse a été nécessaire pour obtenir des résultats satisfaisants. Cette réaction nécessite une évaluation de son étendue vis-À-Vis des énecarbamates. Des transformations sont également envisagées pour valoriser cette méthodologie.

This thesis works were aimed the asymmetric synthesis of optically pure heterocycles by high added value methodology. On one hand, the asymmetric organocatalysis allows using an inexpensive chiral materials in small quantities to generate chiral products, on the other hand, the cycloaddition reactions allow atom economy and the creation of several bonds in one reaction.The first part of this thesis…

Advisors/Committee Members: Masson, Géraldine (thesis director).

Subjects/Keywords: Cycloaddition; Organocatalyse; Acide phosphorique; Énecarbamate; Cycloaddition; Organocatalysys; Phosphoric acid; Enecarbamate

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APA (6^th Edition):

Laurent, G. (2014). Réactions de cycloadditions énantiosélectives catalysées par des dérivés d’acides de Brønsted chiraux : Enantioselectives cycloadditions reactions catalyzed by chirals Brønsted acids derivatives. (Doctoral Dissertation). Université Paris-Sud – Paris XI. Retrieved from http://www.theses.fr/2014PA112419

Chicago Manual of Style (16^th Edition):

Laurent, Grégory. “Réactions de cycloadditions énantiosélectives catalysées par des dérivés d’acides de Brønsted chiraux : Enantioselectives cycloadditions reactions catalyzed by chirals Brønsted acids derivatives.” 2014. Doctoral Dissertation, Université Paris-Sud – Paris XI. Accessed December 12, 2019. http://www.theses.fr/2014PA112419.

MLA Handbook (7^th Edition):

Laurent, Grégory. “Réactions de cycloadditions énantiosélectives catalysées par des dérivés d’acides de Brønsted chiraux : Enantioselectives cycloadditions reactions catalyzed by chirals Brønsted acids derivatives.” 2014. Web. 12 Dec 2019.

Vancouver:

Laurent G. Réactions de cycloadditions énantiosélectives catalysées par des dérivés d’acides de Brønsted chiraux : Enantioselectives cycloadditions reactions catalyzed by chirals Brønsted acids derivatives. [Internet] [Doctoral dissertation]. Université Paris-Sud – Paris XI; 2014. [cited 2019 Dec 12]. Available from: http://www.theses.fr/2014PA112419.

Council of Science Editors:

Laurent G. Réactions de cycloadditions énantiosélectives catalysées par des dérivés d’acides de Brønsted chiraux : Enantioselectives cycloadditions reactions catalyzed by chirals Brønsted acids derivatives. [Doctoral Dissertation]. Université Paris-Sud – Paris XI; 2014. Available from: http://www.theses.fr/2014PA112419

University of Guelph

20. Jack, Kelsey. Investigations into the Ruthenium Catalyzed Ring Opening and Dimerization Reactions of Oxabicyclic Alkenes .

Degree: 2012, University of Guelph

URL: https://atrium.lib.uoguelph.ca/xmlui/handle/10214/4738

► Oxabicyclic alkenes have been the focus of many synthetic studies as they are versatile compounds which act as synthetic intermediates to produce a variety of… (more)

Subjects/Keywords: Cycloaddition; Oxabicyclic Alkenes; Dimerization; Cycloaddition; Ring Opening; Ruthenium

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APA (6^th Edition):

Jack, K. (2012). Investigations into the Ruthenium Catalyzed Ring Opening and Dimerization Reactions of Oxabicyclic Alkenes . (Thesis). University of Guelph. Retrieved from https://atrium.lib.uoguelph.ca/xmlui/handle/10214/4738

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Jack, Kelsey. “Investigations into the Ruthenium Catalyzed Ring Opening and Dimerization Reactions of Oxabicyclic Alkenes .” 2012. Thesis, University of Guelph. Accessed December 12, 2019. https://atrium.lib.uoguelph.ca/xmlui/handle/10214/4738.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Jack, Kelsey. “Investigations into the Ruthenium Catalyzed Ring Opening and Dimerization Reactions of Oxabicyclic Alkenes .” 2012. Web. 12 Dec 2019.

Vancouver:

Jack K. Investigations into the Ruthenium Catalyzed Ring Opening and Dimerization Reactions of Oxabicyclic Alkenes . [Internet] [Thesis]. University of Guelph; 2012. [cited 2019 Dec 12]. Available from: https://atrium.lib.uoguelph.ca/xmlui/handle/10214/4738.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Jack K. Investigations into the Ruthenium Catalyzed Ring Opening and Dimerization Reactions of Oxabicyclic Alkenes . [Thesis]. University of Guelph; 2012. Available from: https://atrium.lib.uoguelph.ca/xmlui/handle/10214/4738

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Utah

21. Lane, Timothy Karl. The development of iron-catalyzed [2+2+2] cycloadditions to produce 6-membered nitrogen heterocycles.

Degree: PhD, Chemistry, 2015, University of Utah

URL: http://content.lib.utah.edu/cdm/singleitem/collection/etd3/id/4058/rec/2441

► One of the greatest challenges in synthetic chemistry is the development of reactions that can efficiently afford target compounds without creating byproducts. One such class… (more)

Subjects/Keywords: Catalyst; Cycloaddition; Inorganic; Organometallic; Pyridine; Pyrimidine

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APA (6^th Edition):

Lane, T. K. (2015). The development of iron-catalyzed [2+2+2] cycloadditions to produce 6-membered nitrogen heterocycles. (Doctoral Dissertation). University of Utah. Retrieved from http://content.lib.utah.edu/cdm/singleitem/collection/etd3/id/4058/rec/2441

Chicago Manual of Style (16^th Edition):

Lane, Timothy Karl. “The development of iron-catalyzed [2+2+2] cycloadditions to produce 6-membered nitrogen heterocycles.” 2015. Doctoral Dissertation, University of Utah. Accessed December 12, 2019. http://content.lib.utah.edu/cdm/singleitem/collection/etd3/id/4058/rec/2441.

MLA Handbook (7^th Edition):

Lane, Timothy Karl. “The development of iron-catalyzed [2+2+2] cycloadditions to produce 6-membered nitrogen heterocycles.” 2015. Web. 12 Dec 2019.

Vancouver:

Lane TK. The development of iron-catalyzed [2+2+2] cycloadditions to produce 6-membered nitrogen heterocycles. [Internet] [Doctoral dissertation]. University of Utah; 2015. [cited 2019 Dec 12]. Available from: http://content.lib.utah.edu/cdm/singleitem/collection/etd3/id/4058/rec/2441.

Council of Science Editors:

Lane TK. The development of iron-catalyzed [2+2+2] cycloadditions to produce 6-membered nitrogen heterocycles. [Doctoral Dissertation]. University of Utah; 2015. Available from: http://content.lib.utah.edu/cdm/singleitem/collection/etd3/id/4058/rec/2441

Texas A&M University

22. Kang, Jun Yong. Synthesis of 5-Substituted Isoxazolidines by [3 plus 2] Cycloaddition of Nitrones Generated in an Unusual Way from Nitrosobenzene and Styrene.

Degree: 2010, Texas A&M University

URL: http://hdl.handle.net/1969.1/ETD-TAMU-2008-12-82

► A new synthetic method toward 5-substituted isoxazolidines by [3 plus 2] cycloaddition of nitrones generated from nitrosobenzene and styrene was discovered. The formation of nitrones… (more)

Subjects/Keywords: [3+2] dipolar cycloaddition; isoxazolidine; nitrone

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APA (6^th Edition):

Kang, J. Y. (2010). Synthesis of 5-Substituted Isoxazolidines by [3 plus 2] Cycloaddition of Nitrones Generated in an Unusual Way from Nitrosobenzene and Styrene. (Thesis). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/ETD-TAMU-2008-12-82

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Kang, Jun Yong. “Synthesis of 5-Substituted Isoxazolidines by [3 plus 2] Cycloaddition of Nitrones Generated in an Unusual Way from Nitrosobenzene and Styrene.” 2010. Thesis, Texas A&M University. Accessed December 12, 2019. http://hdl.handle.net/1969.1/ETD-TAMU-2008-12-82.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Kang, Jun Yong. “Synthesis of 5-Substituted Isoxazolidines by [3 plus 2] Cycloaddition of Nitrones Generated in an Unusual Way from Nitrosobenzene and Styrene.” 2010. Web. 12 Dec 2019.

Vancouver:

Kang JY. Synthesis of 5-Substituted Isoxazolidines by [3 plus 2] Cycloaddition of Nitrones Generated in an Unusual Way from Nitrosobenzene and Styrene. [Internet] [Thesis]. Texas A&M University; 2010. [cited 2019 Dec 12]. Available from: http://hdl.handle.net/1969.1/ETD-TAMU-2008-12-82.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Kang JY. Synthesis of 5-Substituted Isoxazolidines by [3 plus 2] Cycloaddition of Nitrones Generated in an Unusual Way from Nitrosobenzene and Styrene. [Thesis]. Texas A&M University; 2010. Available from: http://hdl.handle.net/1969.1/ETD-TAMU-2008-12-82

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Cincinnati

23. Rodrigo, Sanjeewa K. Nickel Catalyzed Regioselective Reductive Coupling Reactions.

Degree: PhD, Arts and Sciences: Chemistry, 2014, University of Cincinnati

URL: http://rave.ohiolink.edu/etdc/view?acc_num=ucin1396532622

► Coupling or cycloaddition of two different p-components for the construction of more complex structural motifs is commonly used in organic synthesis. Most of these systems… (more)

Subjects/Keywords: Analytical Chemistry; Chemistry; reductive coupling reactions; cycloaddition

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APA (6^th Edition):

Rodrigo, S. K. (2014). Nickel Catalyzed Regioselective Reductive Coupling Reactions. (Doctoral Dissertation). University of Cincinnati. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=ucin1396532622

Chicago Manual of Style (16^th Edition):

Rodrigo, Sanjeewa K. “Nickel Catalyzed Regioselective Reductive Coupling Reactions.” 2014. Doctoral Dissertation, University of Cincinnati. Accessed December 12, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1396532622.

MLA Handbook (7^th Edition):

Rodrigo, Sanjeewa K. “Nickel Catalyzed Regioselective Reductive Coupling Reactions.” 2014. Web. 12 Dec 2019.

Vancouver:

Rodrigo SK. Nickel Catalyzed Regioselective Reductive Coupling Reactions. [Internet] [Doctoral dissertation]. University of Cincinnati; 2014. [cited 2019 Dec 12]. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=ucin1396532622.

Council of Science Editors:

Rodrigo SK. Nickel Catalyzed Regioselective Reductive Coupling Reactions. [Doctoral Dissertation]. University of Cincinnati; 2014. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=ucin1396532622

Miami University

24. Craft, Derek T. Palladium and Gold-Catalyzed transannular [4+3] cycloaddition reactions: Application to the ABCD carbon framework of Cortistatin A. A short synthesis of S-(+)-Siphonodiol. New chiral Au(I) N-heterocyclic carbene complexes and their use in intramolecular c.

Degree: PhD, Chemistry, 2010, Miami University

URL: http://rave.ohiolink.edu/etdc/view?acc_num=miami1272036117

► Unit I, Using allene RCM reactions, 12, 14 and 16 membered furan/allene macrocycles were synthesized. Selective epoxidation reactions and Platinum catalysis were unable to initiate… (more)

Subjects/Keywords: Chemistry; transannular; cycloaddition; Cortistatin A; Gold

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APA (6^th Edition):

Craft, D. T. (2010). Palladium and Gold-Catalyzed transannular [4+3] cycloaddition reactions: Application to the ABCD carbon framework of Cortistatin A. A short synthesis of S-(+)-Siphonodiol. New chiral Au(I) N-heterocyclic carbene complexes and their use in intramolecular c. (Doctoral Dissertation). Miami University. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=miami1272036117

Chicago Manual of Style (16^th Edition):

Craft, Derek T. “Palladium and Gold-Catalyzed transannular [4+3] cycloaddition reactions: Application to the ABCD carbon framework of Cortistatin A. A short synthesis of S-(+)-Siphonodiol. New chiral Au(I) N-heterocyclic carbene complexes and their use in intramolecular c.” 2010. Doctoral Dissertation, Miami University. Accessed December 12, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=miami1272036117.

MLA Handbook (7^th Edition):

Craft, Derek T. “Palladium and Gold-Catalyzed transannular [4+3] cycloaddition reactions: Application to the ABCD carbon framework of Cortistatin A. A short synthesis of S-(+)-Siphonodiol. New chiral Au(I) N-heterocyclic carbene complexes and their use in intramolecular c.” 2010. Web. 12 Dec 2019.

Vancouver:

Craft DT. Palladium and Gold-Catalyzed transannular [4+3] cycloaddition reactions: Application to the ABCD carbon framework of Cortistatin A. A short synthesis of S-(+)-Siphonodiol. New chiral Au(I) N-heterocyclic carbene complexes and their use in intramolecular c. [Internet] [Doctoral dissertation]. Miami University; 2010. [cited 2019 Dec 12]. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=miami1272036117.

Council of Science Editors:

Craft DT. Palladium and Gold-Catalyzed transannular [4+3] cycloaddition reactions: Application to the ABCD carbon framework of Cortistatin A. A short synthesis of S-(+)-Siphonodiol. New chiral Au(I) N-heterocyclic carbene complexes and their use in intramolecular c. [Doctoral Dissertation]. Miami University; 2010. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=miami1272036117

Université du Québec à Montréal

25. Desjardins, Marc-André. Cycloaddition 1,3-dipolaire intramoléculaire impliquant l'oxyde de nitrile et l'azoture comme dipôles et des 2-vinyloxazolidines dérivés de la noréphédrine.

Degree: 2008, Université du Québec à Montréal

URL: http://www.archipel.uqam.ca/1047/1/M10355.pdf

► L'utilisation de la réaction de cycloaddition 1,3-dipolaire permet la formation d'hétérocycles hautement fonctionnalisés. L'étude de cette réaction de manière intramoléculaire permet la formation de centres… (more)

▼ L'utilisation de la réaction de cycloaddition 1,3-dipolaire permet la formation d'hétérocycles hautement fonctionnalisés. L'étude de cette réaction de manière intramoléculaire permet la formation de centres chiraux avec une excellente sélectivité. Un alcaloïde naturel, la noréphédrine, est utilisé comme gabarit chiral de départ pour l'insertion des groupements dipôle et dipolarophile nécessaires à la cyloaddition. L'adaptation d'une procédure développée par Roche Products LTD pour la formation d'un amide par l'addition d'un chlorure d'halogéno-alcanoyle sur l'amine de la noréphédrine a permis l'obtention d'amides pures sans le besoin de purification chromatographique. La condensation de ces N-alcanoylhalogénures avec un dérivé acétal de l'acroléine entraîne la formation d'une 2-vinyloxazolidine. L'optimisation des paramètres réactionnels a permis un contrôle parfait de la stéréochimie créé au nouveau centre chiral en C-2 (et la minimisation des produits secondaires formés). L'insertion de la fonction nitro nécessaire pour la cycloaddition intramoléculaire vers les isoxazolines a nécessité deux innovations différentes. Le passage par des intermédiaires iodés est préférable pour l'insertion des fonctions NO₂ et cette substitution a été optimisée afin de maximiser le ratio nitro/nitrite grâce à l'ajout de phloroglucinol. L'activation de dérivés nitro portés par des chaînes alkyles de longueur variables (nombre de carbones: 4 à 6) par la méthode de Mukaiyama a produit les cycloadduits isoxazolines. Toutefois, la longueur de la chaîne a un impact majeur sur la sélectivité de l'anneau 2-isoxazoline issu de la réaction. La cycloaddition à partir du dérivé nitrobutanoyle a formé un produit de régiochimie disubstitué 3,4, ce qui est inverse à la théorie des orbitales moléculaires pour les alcènes mono-substitués qui produisent généralement des isoxazolines substitués en 3,5 et d'une stéréochimie R* pour le centre chiral formé. Par contre, le dérivé nitropentanoyle forme un cycloadduit ayant une stéréochimie opposée S* tout en conservant la régiochimie du dérivé précédent. L'activation du dérivé nitrohexanoyle, a donné une isoxazoline de régiochimie normale disubstitué en 3,5 grâce à sa chaîne latérale plus longue qui permet la fixation de l'oxygène de l'oxyde de nitrile intermédiaire sur le carbone interne de la fonction alcène. La stéréochimie de ce cycloadduit est R*. L'étude de la longueur de la chaîne a donc montré dans un premier temps, une inversion de stéréochimie et ensuite une inversion de régiochimie. L'autre partie du projet consiste en l'utilisation d'une fonction azoture pour la cycloaddition menant aux triazolines. L'insertion de l'ion N₃‾ est aussi améliorée par la formation d'intermédiaires iodés et la cycloaddition nécessite un chauffage dépendant du dérivé. Les espèces triazolines de régiochimie normale 3,4 et de stéréochimie spécifique R* ont été générées. D'ailleurs, la stabilité des triazolines varie beaucoup et certaines d'entre elles doivent être utilisées sans purification. Leur activation subséquente…

Subjects/Keywords: Phénylpropanolamine; Cycloaddition; Oxyde de nitrile; Isoxazoline

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Desjardins, M. (2008). Cycloaddition 1,3-dipolaire intramoléculaire impliquant l'oxyde de nitrile et l'azoture comme dipôles et des 2-vinyloxazolidines dérivés de la noréphédrine. (Thesis). Université du Québec à Montréal. Retrieved from http://www.archipel.uqam.ca/1047/1/M10355.pdf

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Desjardins, Marc-André. “Cycloaddition 1,3-dipolaire intramoléculaire impliquant l'oxyde de nitrile et l'azoture comme dipôles et des 2-vinyloxazolidines dérivés de la noréphédrine.” 2008. Thesis, Université du Québec à Montréal. Accessed December 12, 2019. http://www.archipel.uqam.ca/1047/1/M10355.pdf.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Desjardins, Marc-André. “Cycloaddition 1,3-dipolaire intramoléculaire impliquant l'oxyde de nitrile et l'azoture comme dipôles et des 2-vinyloxazolidines dérivés de la noréphédrine.” 2008. Web. 12 Dec 2019.

Vancouver:

Desjardins M. Cycloaddition 1,3-dipolaire intramoléculaire impliquant l'oxyde de nitrile et l'azoture comme dipôles et des 2-vinyloxazolidines dérivés de la noréphédrine. [Internet] [Thesis]. Université du Québec à Montréal; 2008. [cited 2019 Dec 12]. Available from: http://www.archipel.uqam.ca/1047/1/M10355.pdf.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Desjardins M. Cycloaddition 1,3-dipolaire intramoléculaire impliquant l'oxyde de nitrile et l'azoture comme dipôles et des 2-vinyloxazolidines dérivés de la noréphédrine. [Thesis]. Université du Québec à Montréal; 2008. Available from: http://www.archipel.uqam.ca/1047/1/M10355.pdf

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Western Ontario

26. Farhadpour, Bahareh. Doubly Bonded Derivatives of Si and Ge: Cycloaddition Reactions and Polymer Chemistry.

Degree: 2017, University of Western Ontario

URL: https://ir.lib.uwo.ca/etd/4606

► (Di)tetrelenes are a fundamental class of unsaturated Group 14 compounds and play a central role in the synthesis of functional Group 14 compounds. The objective… (more)

▼ (Di)tetrelenes are a fundamental class of unsaturated Group 14 compounds and play a central role in the synthesis of functional Group 14 compounds. The objective of this research was to investigate the various aspects of group 14 (di)tetrelenes (R2M=ER2, M = Si, Ge, and E = C, Si, Ge) reactivity. The addition of a series of nitrone and nitro compounds to the group 14 (di)tetrelenes  Mes2Si=SiMes2, Mes2Ge=GeMes2 and Mes2Ge=CH(CH2-t-Bu), was examined. In general, the addition of the 1,3-dipolar nitrogen oxides to the (di)tetrelene gave 5-membered ring adducts via a formal [3+2] cycloaddition where the (di)tetrelene acts as the 2p component and the nitro/nitrone act as the 4p component. In some cases, the ring underwent rearrengment or cleavage to give secondary products. Reactivity of (di)tetrelenes toward R2HP=O derivatives, where R = Ph, OPh, OCH3, and R3P:,where R = OCH3,to tetramesityldigermene 1.2 and/or the germene 1.1 is reported in an effort to give a broader understanding of the chemistry of the addition of phosphine oxides to (di)tetrelenes. In general, a 1,2-adduct is formed which appears to be derived from the isomeric hydroxyphosphines. Notably, the phosphine oxides are reduced during the course of the reaction. A comparison to the analogous chemistry of alkenes and surface digermenes is made. A variety of alkyllithium (R = Me, Bu, t-Bu) reagents and potassium tert-butoxide were added to the highly reactive silene Mes2Si=CHCH2t-Bu and the germene Mes2Ge=CHCH2t-Bu, in diethyl ether. 1,2-Addition products were obtained regioselectively and in good yield after treatment with a weak acid with no evidence for any rearrangement products and no polymerization was observed. The reactivity of the silene and germene toward organometallic reagents is compared to previous studies of analogous silenes and germenes. The characterization of polysilenes and polygermenes derived from the anionic polymerization of silenes and germenes, respectively, is reported. The molecular weight of the polygermene was determined by static light scattering (SLS) in THF which showed that Mw to be 41500 g mol-1. The Mw determined by SLS was compared to the data obtained by GPC. Characterization of polysilene and polygermene by ESI-MS revealed the presence of oligomers (n < 10) of the polytetrelenes. The mass spectral data also reveal the presence of R-Ge and C-H end groups, consistent with a chain growth mechanism where the R group is derived from the anionic initiator. NMR spectroscopic analysis of the polysilene provided further evidence of a chain growth mechanism for the anionic polymerization of the silene without rearrangement during the polymerization.

Subjects/Keywords: Silene; Germene; Polygermene; Polysilene; Cycloaddition; Chemistry

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APA (6^th Edition):

Farhadpour, B. (2017). Doubly Bonded Derivatives of Si and Ge: Cycloaddition Reactions and Polymer Chemistry. (Thesis). University of Western Ontario. Retrieved from https://ir.lib.uwo.ca/etd/4606

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Farhadpour, Bahareh. “Doubly Bonded Derivatives of Si and Ge: Cycloaddition Reactions and Polymer Chemistry.” 2017. Thesis, University of Western Ontario. Accessed December 12, 2019. https://ir.lib.uwo.ca/etd/4606.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Farhadpour, Bahareh. “Doubly Bonded Derivatives of Si and Ge: Cycloaddition Reactions and Polymer Chemistry.” 2017. Web. 12 Dec 2019.

Vancouver:

Farhadpour B. Doubly Bonded Derivatives of Si and Ge: Cycloaddition Reactions and Polymer Chemistry. [Internet] [Thesis]. University of Western Ontario; 2017. [cited 2019 Dec 12]. Available from: https://ir.lib.uwo.ca/etd/4606.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Farhadpour B. Doubly Bonded Derivatives of Si and Ge: Cycloaddition Reactions and Polymer Chemistry. [Thesis]. University of Western Ontario; 2017. Available from: https://ir.lib.uwo.ca/etd/4606

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Victoria

27. Morrow, Krista Maria Elena. Phosphorus-containing ruthenacycles: exploring their potential in processes relevant to hydrophosphination.

Degree: Dept. of Chemistry, 2012, University of Victoria

URL: http://hdl.handle.net/1828/3890

► Phosphorus-containing metallacycles formed from the [2+2] cycloaddition of unsaturated substrates at the Ru-P π-bond of [Ru(η5-indenyl)(PCy2)(PPh3)] (2) were examined as possible intermediates relevant to hydrophosphination.… (more)

Subjects/Keywords: cycloaddition; metallacycles; ruthenium; P ligands; hydrophosphination

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Morrow, K. M. E. (2012). Phosphorus-containing ruthenacycles: exploring their potential in processes relevant to hydrophosphination. (Masters Thesis). University of Victoria. Retrieved from http://hdl.handle.net/1828/3890

Chicago Manual of Style (16^th Edition):

Morrow, Krista Maria Elena. “Phosphorus-containing ruthenacycles: exploring their potential in processes relevant to hydrophosphination.” 2012. Masters Thesis, University of Victoria. Accessed December 12, 2019. http://hdl.handle.net/1828/3890.

MLA Handbook (7^th Edition):

Morrow, Krista Maria Elena. “Phosphorus-containing ruthenacycles: exploring their potential in processes relevant to hydrophosphination.” 2012. Web. 12 Dec 2019.

Vancouver:

Morrow KME. Phosphorus-containing ruthenacycles: exploring their potential in processes relevant to hydrophosphination. [Internet] [Masters thesis]. University of Victoria; 2012. [cited 2019 Dec 12]. Available from: http://hdl.handle.net/1828/3890.

Council of Science Editors:

Morrow KME. Phosphorus-containing ruthenacycles: exploring their potential in processes relevant to hydrophosphination. [Masters Thesis]. University of Victoria; 2012. Available from: http://hdl.handle.net/1828/3890

Montana Tech

28. Weaver, Matthew Jacob. IMPROVED SYNTHESIS OF 3-ARYL-ISOXAZOLES AS INTERMEDIATES FOR NOVEL G-QUADRUPLEX BINDING ANTI-TUMOR AGENTS.

Degree: MS, 2013, Montana Tech

URL: https://scholarworks.umt.edu/etd/558

► As a promising new target for chemotherapy G-quadruplexes (G4) have drawn great interest from the scientific community. Current chemotherapeutic agents exhibit broad toxicity to patients;… (more)

Subjects/Keywords: 1; 3-dipolar cycloaddition; g4; isoxazole; quadruplex

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APA (6^th Edition):

Weaver, M. J. (2013). IMPROVED SYNTHESIS OF 3-ARYL-ISOXAZOLES AS INTERMEDIATES FOR NOVEL G-QUADRUPLEX BINDING ANTI-TUMOR AGENTS. (Masters Thesis). Montana Tech. Retrieved from https://scholarworks.umt.edu/etd/558

Chicago Manual of Style (16^th Edition):

Weaver, Matthew Jacob. “IMPROVED SYNTHESIS OF 3-ARYL-ISOXAZOLES AS INTERMEDIATES FOR NOVEL G-QUADRUPLEX BINDING ANTI-TUMOR AGENTS.” 2013. Masters Thesis, Montana Tech. Accessed December 12, 2019. https://scholarworks.umt.edu/etd/558.

MLA Handbook (7^th Edition):

Weaver, Matthew Jacob. “IMPROVED SYNTHESIS OF 3-ARYL-ISOXAZOLES AS INTERMEDIATES FOR NOVEL G-QUADRUPLEX BINDING ANTI-TUMOR AGENTS.” 2013. Web. 12 Dec 2019.

Vancouver:

Weaver MJ. IMPROVED SYNTHESIS OF 3-ARYL-ISOXAZOLES AS INTERMEDIATES FOR NOVEL G-QUADRUPLEX BINDING ANTI-TUMOR AGENTS. [Internet] [Masters thesis]. Montana Tech; 2013. [cited 2019 Dec 12]. Available from: https://scholarworks.umt.edu/etd/558.

Council of Science Editors:

Weaver MJ. IMPROVED SYNTHESIS OF 3-ARYL-ISOXAZOLES AS INTERMEDIATES FOR NOVEL G-QUADRUPLEX BINDING ANTI-TUMOR AGENTS. [Masters Thesis]. Montana Tech; 2013. Available from: https://scholarworks.umt.edu/etd/558

29. Vanbeselaere, Jorick. Analyses structurales et métaboliques de la sialylation des vertébrés : Structural and metabolic analysis in the sialylation of vertebrates.

Degree: Docteur es, Aspects moléculaires et cellulaires de la biologie, 2013, Université Lille I – Sciences et Technologies

URL: http://www.theses.fr/2013LIL10153

►

Les travaux présentés explorent la diversité structurale des glycannes dans l’organisme modèle du Poisson Zèbre et analysent la régulation des sialoconjugués lors d’évènements physiopathologiques particuliers.… (more)

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Les travaux présentés explorent la diversité structurale des glycannes dans l’organisme modèle du Poisson Zèbre et analysent la régulation des sialoconjugués lors d’évènements physiopathologiques particuliers. La première partie de mes travaux vise à étendre nos connaissances structurales sur la distribution des glycannes à l’échelle cellulaire et tissulaire grâce à l’étude d’un modèle majeur de vertébré, le poisson zèbre. Ces travaux s’inscrivent dans une optique de recherche fondamentale pour établir la première carte de glycosylation (glycosphingolipides ; N- et O-glycannes) des organes du poisson zèbre adulte. A terme, ces résultats permettront de mieux appréhender les relations structures-fonctions des glycannes au niveau des organismes entiers. La seconde partie de mes travaux se focalise sur le suivi structural et métabolique de la sialylation. Une première stratégie est basée sur l’utilisation d’un mime-alcyné de l’acide sialique que nous pouvons coupler à un fluorophore-azidé par « click-chemistry » pour visualiser les sialoconjugués en microscopie. Ainsi, nous avons étudié le métabolisme de l’acide sialique des fibroblastes de patients atteints de Maladie Congénitale de la Glycosylation ou pour suivre la métabolisation de l’acide sialique après une infection par le parasite intracellulaire Toxoplasma gondii. Une seconde stratégie s’intéresse à la régulation de la sialylation par des analyses structurales lors d’une infection parasitaire par Trypanosoma cruzii ou lors de la surexpression d’une sialyltransferase dans la lignée cellulaire MCF-7. Ces études révèlent d’importantes variations dans l’expression des sialoglycoconjugués.

Our studies investigated the structural diversity of glycans in zebrafish model organism and analyzed the regulation of sialoconjuguates during specific pathophysiological events. First part of my work intends to expand our structural knowledge about the organisation of glycans at the cellular and tissue levels through the study of a major vertebrate model, the zebrafish. This study aims to establish the first map of glycosylation in zebrafish, including profiles of glycosphingolipids as well as N- and O-glycans of glycoproteins. These data reveal numerous novel structures, including oligofucosylated and oligosialylated glycosphingolipids, and inform us about the organization of glycans within each organ. These results will provide new insight into the structure-function relationships of glycans in whole organisms. Second part of my work focuses on the structural and metabolic monitoring of sialylation. One of the deployed strategies is based on the use of an alkyne analogue of sialic acid and that can specially bind to a fluorophore by click-chemistry for monitoring the sialoconjugates by fluorescence microscopy. This strategy has been implemented to study sialic acid metabolism of fibroblasts from patients with congenital disease of the glycosylation or to follow the sialic acid metabolism after infection with the intracellular parasite Toxoplasma gondii. A second strategy…

Advisors/Committee Members: Guérardel, Yann (thesis director).

Subjects/Keywords: Glycome; Cycloaddition cuivre-azide-alcyne; 572.68

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Vanbeselaere, J. (2013). Analyses structurales et métaboliques de la sialylation des vertébrés : Structural and metabolic analysis in the sialylation of vertebrates. (Doctoral Dissertation). Université Lille I – Sciences et Technologies. Retrieved from http://www.theses.fr/2013LIL10153

Chicago Manual of Style (16^th Edition):

Vanbeselaere, Jorick. “Analyses structurales et métaboliques de la sialylation des vertébrés : Structural and metabolic analysis in the sialylation of vertebrates.” 2013. Doctoral Dissertation, Université Lille I – Sciences et Technologies. Accessed December 12, 2019. http://www.theses.fr/2013LIL10153.

MLA Handbook (7^th Edition):

Vanbeselaere, Jorick. “Analyses structurales et métaboliques de la sialylation des vertébrés : Structural and metabolic analysis in the sialylation of vertebrates.” 2013. Web. 12 Dec 2019.

Vancouver:

Vanbeselaere J. Analyses structurales et métaboliques de la sialylation des vertébrés : Structural and metabolic analysis in the sialylation of vertebrates. [Internet] [Doctoral dissertation]. Université Lille I – Sciences et Technologies; 2013. [cited 2019 Dec 12]. Available from: http://www.theses.fr/2013LIL10153.

Council of Science Editors:

Vanbeselaere J. Analyses structurales et métaboliques de la sialylation des vertébrés : Structural and metabolic analysis in the sialylation of vertebrates. [Doctoral Dissertation]. Université Lille I – Sciences et Technologies; 2013. Available from: http://www.theses.fr/2013LIL10153

30. Thomas, David Robert. Efforts towards understanding the nickel catalyzed cycloaddition of ciynes and nitriles to make pyridines.

Degree: MS, Chemistry, 2014, University of Utah

URL: http://content.lib.utah.edu/cdm/singleitem/collection/etd3/id/2883/rec/842

► Efforts towards understanding the nickel catalyzed cycloaddition of diynes and nitriles to make pyridines are described. During the course of this mechanistic study, a previously… (more)

Subjects/Keywords: Cycloaddition; Pyridine

…x5B;1a], kobs vs [IPr], and kobs vs [MeCN] for the cycloaddition of… …and angles in Figure 3. Dimer 3 was found to catalyze the cycloaddition of nitriles and… …x5D; for the cycloaddition of 4 at 0 °C in C7D8 10 Scheme 5. Possible mechanistic… …cycloaddition of nitriles and diynes to form pyridines. Kinetic studies showed a dependence of the… …28.8, 24.8, 23.7.19 Cycloaddition catalyzed by 3a. A stock solution of 3a was prepared by…

10 more images…

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Thomas, D. R. (2014). Efforts towards understanding the nickel catalyzed cycloaddition of ciynes and nitriles to make pyridines. (Masters Thesis). University of Utah. Retrieved from http://content.lib.utah.edu/cdm/singleitem/collection/etd3/id/2883/rec/842

Chicago Manual of Style (16^th Edition):

Thomas, David Robert. “Efforts towards understanding the nickel catalyzed cycloaddition of ciynes and nitriles to make pyridines.” 2014. Masters Thesis, University of Utah. Accessed December 12, 2019. http://content.lib.utah.edu/cdm/singleitem/collection/etd3/id/2883/rec/842.

MLA Handbook (7^th Edition):

Thomas, David Robert. “Efforts towards understanding the nickel catalyzed cycloaddition of ciynes and nitriles to make pyridines.” 2014. Web. 12 Dec 2019.

Vancouver:

Thomas DR. Efforts towards understanding the nickel catalyzed cycloaddition of ciynes and nitriles to make pyridines. [Internet] [Masters thesis]. University of Utah; 2014. [cited 2019 Dec 12]. Available from: http://content.lib.utah.edu/cdm/singleitem/collection/etd3/id/2883/rec/842.

Council of Science Editors:

Thomas DR. Efforts towards understanding the nickel catalyzed cycloaddition of ciynes and nitriles to make pyridines. [Masters Thesis]. University of Utah; 2014. Available from: http://content.lib.utah.edu/cdm/singleitem/collection/etd3/id/2883/rec/842

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