The enantioselective synthesis of N-t-Boc protected phenylglycine derivatives is reported. The synthetic strategy involved the enantioselective deprotonation of N-t-Boc-N-TMS protected benzylamines using the (-) sparteine.s-BuLi complex. (C) 1997 Published by Elsevier Science Ltd.
Protection of a protecting group: Preparation of stable N-silylated t-butyl carbamates
作者:Johanne Roby、Normand Voyer
DOI:10.1016/s0040-4039(96)02271-x
日期:1997.1
The practical preparation of N-silylated carbamates (typified by 1) is reported. These compounds are synthesized in high yields by treating N-t-Boc-protected primary amines with silyl triflate reagents in dichloromethane in the presence of triethylamine. Copyright (C) 1996 Elsevier Science Ltd