Articles producció científica> Química Física i Inorgànica

Unsymmetrical 1,1-diborated multisubstituted sp3-carbons formed via a metal-free concerted-asynchronous mechanism

  • Identification data

    Identifier: imarina:3665101
    Authors:
    Cuenca, Ana B.Cid, JessicaGarcia-Lopez, DiegoCarbo, Jorge J.Fernandez, Elena
    Abstract:
    We have experimentally proved the unsymmetrical 1,1-diboration of diazo compounds, formed in situ from aldehydes and cyclic and non-cyclic ketones, in the absence of any transition metal complex. The heterolytic cleavage of the mixed diboron reagent, Bpin-Bdan, and the formation of two geminal C-Bpin and C-Bdan bonds has been rationalised based on DFT calculations to occur via a concerted-asynchronous mechanism. Diastereoselection is attained on substituted cyclohexanones and DFT studies provide understanding on the origin of the selectivity. The alkoxide-assisted selective deborylation of Bpin from the multisubstituted sp3-carbon and generation of a Bdan stabilized carbanion, easily conducts a selective protodeboronation sequence
  • Others:

    Author, as appears in the article.: Cuenca, Ana B.; Cid, Jessica; Garcia-Lopez, Diego; Carbo, Jorge J.; Fernandez, Elena;
    Department: Química Física i Inorgànica
    URV's Author/s: Carbó Martin, Jorge Juan / Fernández Gutiérrez, Maria Elena
    Keywords: Diboron reagents
    Abstract: We have experimentally proved the unsymmetrical 1,1-diboration of diazo compounds, formed in situ from aldehydes and cyclic and non-cyclic ketones, in the absence of any transition metal complex. The heterolytic cleavage of the mixed diboron reagent, Bpin-Bdan, and the formation of two geminal C-Bpin and C-Bdan bonds has been rationalised based on DFT calculations to occur via a concerted-asynchronous mechanism. Diastereoselection is attained on substituted cyclohexanones and DFT studies provide understanding on the origin of the selectivity. The alkoxide-assisted selective deborylation of Bpin from the multisubstituted sp3-carbon and generation of a Bdan stabilized carbanion, easily conducts a selective protodeboronation sequence
    Thematic Areas: Química Physical and theoretical chemistry Organic chemistry Odontología Medicina ii Medicina i Materiais Interdisciplinar General medicine Farmacia Ciências biológicas iii Ciências biológicas ii Ciências biológicas i Ciências agrárias i Chemistry, organic Biotecnología Biodiversidade Biochemistry
    licence for use: https://creativecommons.org/licenses/by/3.0/es/
    Author's mail: j.carbo@urv.cat mariaelena.fernandez@urv.cat
    Author identifier: 0000-0002-3945-6721 0000-0001-9025-1791
    Record's date: 2024-09-07
    Papper version: info:eu-repo/semantics/acceptedVersion
    Link to the original source: https://pubs.rsc.org/en/content/articlelanding/2015/ob/c5ob01523e
    Licence document URL: https://repositori.urv.cat/ca/proteccio-de-dades/
    Papper original source: Organic & Biomolecular Chemistry. 13 (37): 9659-9664
    APA: Cuenca, Ana B.; Cid, Jessica; Garcia-Lopez, Diego; Carbo, Jorge J.; Fernandez, Elena; (2015). Unsymmetrical 1,1-diborated multisubstituted sp3-carbons formed via a metal-free concerted-asynchronous mechanism. Organic & Biomolecular Chemistry, 13(37), 9659-9664. DOI: 10.1039/c5ob01523e
    Article's DOI: 10.1039/c5ob01523e
    Entity: Universitat Rovira i Virgili
    Journal publication year: 2015
    Publication Type: Journal Publications
  • Keywords:

    Biochemistry,Chemistry, Organic,Organic Chemistry,Physical and Theoretical Chemistry
    Diboron reagents
    Química
    Physical and theoretical chemistry
    Organic chemistry
    Odontología
    Medicina ii
    Medicina i
    Materiais
    Interdisciplinar
    General medicine
    Farmacia
    Ciências biológicas iii
    Ciências biológicas ii
    Ciências biológicas i
    Ciências agrárias i
    Chemistry, organic
    Biotecnología
    Biodiversidade
    Biochemistry
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