Asymmetric routes towards polyfunctionalized pyrrolidines: Synthesis and reactivity of a chiral silyloxypyrrole
作者:Isabelle Baussanne、Jacques Royer
DOI:10.1016/0040-4039(95)02388-7
日期:1996.2
Starting from O-protected (R)-(−)-phenylglycinol, chiral silyloxypyrrole 5 was prepared in two steps and its reaction with achiral aldehydes under Mukaiyama's reaction conditions was investigated. Addition occurred at the C-5 position of the pyrrolidine ring with complete lk selectivity (except in the case of acetaldehyde) and a modarate to good diastereofacial (RR vs SS) selectivity.
从O-保护的(R)-(-)-苯基甘醇开始,分两步制备手性甲硅烷氧基吡咯5,并研究了其在Mukaiyama反应条件下与非手性醛的反应。加成发生在吡咯烷环的C-5位置,具有完全的lk选择性(乙醛除外),并且具有中等至良好的非对映面选择性(RR与SS)。