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-amino acids in a stereoretentive manner. This two-step sequence provides a new synthetic protocol for optically active α-amino acids from gaseous
的对映选择性催化甲硅烷基化ñ -叔使用Cu-仲二胺复合-butylsulfonylimines证实。所得的光学活性α-氨基硅烷可以在CO 2气氛(1atm)下羧化,以立体保持的方式得到相应的α-氨基酸。这两个步骤的序列提供了一种新的合成方案,用于在催化量的手性源存在下,由气态CO 2和亚胺形成的旋光性α-氨基酸。