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Title The activation of diboron reagents and their application in catalytic boron additions to alkenes
Publication Date
Date Accessioned
Discipline/Department Departament de Química Física i Inorgànica
University/Publisher Universitat Rovira i Virgili
Abstract Organoborane compounds are highly used in a huge number of fields, from medicine, in the boron neutral capture therapy or other molecules with biological activity to the use of functional molecules such us polymers. In our case, we focused our atention in the use of organoborane compounds as a intermediates for the synthesis of high value products. The main topic of this thesis is develop new synthetic methodologies for the efficient obtaition of organoborane compounds. We focus in the synthesis of -boryl carbonyl compounds as a synthons for the synthesis of difuncional molecules. We studied the boron addition to unsaturated molecules in to main strategies: the boron addition using transition metal catalyst or without metal. Always with special attention for the chiral approach of the reaction.
Subjects/Keywords Boron; Organoborane; Catalysis; B-boration; Boron addition; Diboration; 54; 546; 547
Contributors [email protected] (authoremail); true (authoremailshow); Fernández Gutiérrez, Mª Elena (director); Gulyàs, Henrik (codirector); true (authorsendemail)
Language en
Rights ADVERTIMENT. L'accés als continguts d'aquesta tesi doctoral i la seva utilització ha de respectar els drets de la persona autora. Pot ser utilitzada per a consulta o estudi personal, així com en activitats o materials d'investigació i docència en els termes establerts a l'art. 32 del Text Refós de la Llei de Propietat Intel·lectual (RDL 1/1996). Per altres utilitzacions es requereix l'autorització prèvia i expressa de la persona autora. En qualsevol cas, en la utilització dels seus continguts caldrà indicar de forma clara el nom i cognoms de la persona autora i el títol de la tesi doctoral. No s'autoritza la seva reproducció o altres formes d'explotació efectuades amb finalitats de lucre ni la seva comunicació pública des d'un lloc aliè al servei TDX. Tampoc s'autoritza la presentació del seu contingut en una finestra o marc aliè a TDX (framing). Aquesta reserva de drets afecta tant als continguts de la tesi com als seus resums i índexs.
Country of Publication es
Record ID handle:10803/79130
Repository barcelona
Date Indexed 2019-12-30
Issued Date 2012-03-02 00:00:00

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…Organocatalytic diboration and its enantioselective approach 5.1 Introduction 5.2 Work hypothesis 5.3 Results and discussion 137 140 141 UNIVERSITAT ROVIRA I VIRGILI THE ACTIVATION OF DIBORON REAGENTS AND THEIR APPLICATION IN CATALYTIC BORON ADDITIONS TO…

…simultaneously two boryl units in the substrate. The addition to unsaturated carbon-carbon bond proceeds in syn fashion. The diboration reaction is an atom economical and very versatile procedure because both boryl units can be transformed independently into…

…Scheme 1.8: Examples of catalytic diboration reaction and their independently derivatization. Nowadays, diboron reagents are not only used in diboration reactions. Other reactions utilize them with less atom economy such us -boration, hydroboration and…

…The advantages of metalpromoted 1,2-diboration over the uncatalyzed reaction justifies that researchers have been searching for suitable catalytic systems ever since Miyaura and coworkers’s first report.45 They explored for first time the catalyzed…

diboration of alkynes using platinum-phosphine systems as catalytic precursors. In their report, they showed that tetrakis(triphenylphosphine)platinum(0) catalyzed the clean addition of bis(pinacolato)diboron to both…

…First metal catalyzed diboration reaction reported by Miyaura and Suzuki and their derivatitzation through cross coupling reaction Miyaura and coworkers also reported spectroscopic evidences for the formation of the cis-bis(boryl) complex cis…