Asymmetric Addition of α-Diazomethylphosphonate to Alkylideneindolenine Catalyzed by a Trifunctional BINAP-Based Monophosphonium Salt
作者:Peng Zhu、Yi Yang、Yan Liu、Yungui Peng
DOI:10.1021/acs.orglett.2c00213
日期:2022.3.4
were developed and used in the asymmetric addition of α-diazomethylphosphonates to vinylogousimines formed in situfrom sulfonylindoles. This methodology tolerates a broad scope of 2-unsubstituted sulfonyl indoles, which have seldom achieved high enantioselectivities in similar asymmetric reactions with other nucleophiles. Chiral 3-sec-alkyl-substituted indoles containing α-diazophosphonate were afforded