C−C Bond-Forming Reactions via Pd-Mediated Decarboxylative α-Imino Anion Generation
摘要:
alpha-Imino anions are generated under neutral reaction conditions via a Pd-mediated decarboxylation of allyl diphenylglycinate imines with concomitant formation of a pi-allylpalladium species. The resulting delocalized anion can attack the pi-allyl-Pd(II) species or be intercepted by aldehydes to afford homoallylic amines or protected 1,2-amino alcohols, respectively.
C−C Bond-Forming Reactions via Pd-Mediated Decarboxylative α-Imino Anion Generation
摘要:
alpha-Imino anions are generated under neutral reaction conditions via a Pd-mediated decarboxylation of allyl diphenylglycinate imines with concomitant formation of a pi-allylpalladium species. The resulting delocalized anion can attack the pi-allyl-Pd(II) species or be intercepted by aldehydes to afford homoallylic amines or protected 1,2-amino alcohols, respectively.
Palladium-Catalyzed Decarboxylative Generation and Asymmetric Allylation of α-Imino Anions
作者:Xiaoyan Qian、Pengfei Ji、Chang He、Jean-Olivier Zirimwabagabo、Michelle M. Archibald、Andrew A. Yeagley、Jason J. Chruma
DOI:10.1021/ol502693r
日期:2014.10.3
A palladium-catalyzedasymmetricdecarboxylativeallylicalkylation of allyl 2,2-diphenylglycinate imines using (S,S)-f-binaphane as a chiral supporting ligand has been developed. This transformation allows for decarboxylative generation and enantioselective allylation of nonenolate α-imino (2-azaallyl anions) to afford α-aryl homoallylic imines.