Catalytic Enantioselective Silylation of<i>N</i>-Sulfonylimines: Asymmetric Synthesis of α-Amino Acids from CO<sub>2</sub>via Stereospecific Carboxylation of α-Amino Silanes
作者:Tsuyoshi Mita、Masumi Sugawara、Keisuke Saito、Yoshihiro Sato
DOI:10.1021/ol501143c
日期:2014.6.6
A catalytic enantioselective silylation of N-tert-butylsulfonylimines using a Cu–secondary diamine complex was demonstrated. The resulting optically active α-amino silanes could be carboxylated under a CO2 atmosphere (1 atm) to afford the corresponding α-aminoacids in a stereoretentive manner. This two-step sequence provides a new synthetic protocol for optically active α-aminoacids from gaseous