Preparation of Optically Pure Propargylic and Allylic Alcohols from 2-(Trimethylsilyl)vinyl Sulfoxides as a Chiral Ethynyl Anion Synthon: Computational Studies on Elimination Reaction of 2-(Trimethylsilyl)vinyl Sulfoxides
作者:Shuichi Nakamura、Shinya Kusuda、Kiyoshi Kawamura、Takeshi Toru
DOI:10.1021/jo0157223
日期:2002.2.1
The reaction of the alpha-carbanion derived from (trimethylsilyl)vinyl sulfoxides with aldehydes afforded a diastereomeric mixture of the products. Each diastereomer was subjected to specific elimination reactions to give optically pure propargylic, trimethylsilylated propargylic, and allylic alcohols. Acceleration of the sulfenic acid-elimination from the beta-silylvinyl sulfoxide was demonstrated
衍生自(三甲基甲硅烷基)乙烯基亚砜的α-碳负离子与醛的反应提供了产物的非对映异构体混合物。使每种非对映异构体进行特定的消除反应,得到光学纯的炔丙醇,三甲基甲硅烷基化的炔丙醇和烯丙基醇。从头算起证明从β-甲硅烷基乙烯基亚砜中消除亚硫酸的加速主要归因于甲硅烷基的β-作用。