Articles producció científica> Química Física i Inorgànica

Stereoselective Cyclopropanation of 1,1-Diborylalkenes via Palladium-Catalyzed (Trimethylsilyl)diazomethane Insertion

  • Dades identificatives

    Identificador: imarina:9280225
    Autors:
    Salvado, OriolDominguez-Molano, PaulaFernandez, Elena
    Resum:
    Palladium catalyzes the cydclopropanation of 2-substituted 1,1-diborylalkenes with (trimethylsilyl)diazomethane. The relative stereoselectivity is controlled via a carbene insertion sequence generating an exclusive anti conformation between the R and SiMe3 substituents. Mixed 1,1-diborylalkenes also contributed to the formation of stereoselective B, B, Si-cyclopropanes. Orthogonal activation with (NaOBu)-Bu-t gives protodeborylation preferentially on the boron moiety syn to the aryl group. Further oxidation gives access to polyfunctional cycloopropyl alcohols with controlled enantioselectivity when chiral boryl motifs are involved.
  • Altres:

    Autor segons l'article: Salvado, Oriol; Dominguez-Molano, Paula; Fernandez, Elena;
    Departament: Química Física i Inorgànica
    Autor/s de la URV: Domínguez Molano, Paula / Fernández Gutiérrez, Maria Elena / Salvadó Ruiz, Oriol
    Paraules clau: Reagents Hydroboration Esters Carbenoids Asymmetric cyclopropanation Access
    Resum: Palladium catalyzes the cydclopropanation of 2-substituted 1,1-diborylalkenes with (trimethylsilyl)diazomethane. The relative stereoselectivity is controlled via a carbene insertion sequence generating an exclusive anti conformation between the R and SiMe3 substituents. Mixed 1,1-diborylalkenes also contributed to the formation of stereoselective B, B, Si-cyclopropanes. Orthogonal activation with (NaOBu)-Bu-t gives protodeborylation preferentially on the boron moiety syn to the aryl group. Further oxidation gives access to polyfunctional cycloopropyl alcohols with controlled enantioselectivity when chiral boryl motifs are involved.
    Àrees temàtiques: Química Physical and theoretical chemistry Organic chemistry Medicina ii Medicina i Materiais Interdisciplinar General medicine Farmacia Ciências biológicas ii Ciências biológicas i Ciências agrárias i Chemistry, organic Biotecnología Biodiversidade Biochemistry
    Accès a la llicència d'ús: https://creativecommons.org/licenses/by/3.0/es/
    Adreça de correu electrònic de l'autor: oriol.salvado@urv.cat paula.dominguez@urv.cat paula.dominguez@urv.cat oriol.salvado@urv.cat mariaelena.fernandez@urv.cat
    Identificador de l'autor: 0000-0001-9025-1791
    Data d'alta del registre: 2024-09-07
    Versió de l'article dipositat: info:eu-repo/semantics/publishedVersion
    Enllaç font original: https://pubs.acs.org/doi/10.1021/acs.orglett.2c01885
    URL Document de llicència: https://repositori.urv.cat/ca/proteccio-de-dades/
    Referència a l'article segons font original: Organic Letters. 24 (27): 4949-4953
    Referència de l'ítem segons les normes APA: Salvado, Oriol; Dominguez-Molano, Paula; Fernandez, Elena; (2022). Stereoselective Cyclopropanation of 1,1-Diborylalkenes via Palladium-Catalyzed (Trimethylsilyl)diazomethane Insertion. Organic Letters, 24(27), 4949-4953. DOI: 10.1021/acs.orglett.2c01885
    DOI de l'article: 10.1021/acs.orglett.2c01885
    Entitat: Universitat Rovira i Virgili
    Any de publicació de la revista: 2022
    Tipus de publicació: Journal Publications
  • Paraules clau:

    Biochemistry,Chemistry, Organic,Organic Chemistry,Physical and Theoretical Chemistry
    Reagents
    Hydroboration
    Esters
    Carbenoids
    Asymmetric cyclopropanation
    Access
    Química
    Physical and theoretical chemistry
    Organic chemistry
    Medicina ii
    Medicina i
    Materiais
    Interdisciplinar
    General medicine
    Farmacia
    Ciências biológicas ii
    Ciências biológicas i
    Ciências agrárias i
    Chemistry, organic
    Biotecnología
    Biodiversidade
    Biochemistry
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