A Simple Synthesis of α-Ylidene γ-Lactones from γ-Trimethylsiloxy Nitriles
作者:Isamu Matsuda、Shizuaki Murata、Yusuke Izumi
DOI:10.1246/bcsj.52.2389
日期:1979.8
α-Cyano carbanions which are generated from γ-trimethylsiloxy nitriles have been found to react with aldehydes to give α-(1-hydroxyalkyl)-γ-trimethylsiloxy nitriles (6). α-Ylidene γ-lactones (5) are derived from 6 in two steps; hydrolytic lactonization to α-(1-hydroxyalkyl) γ-lactones and dehydration. The stereochemistry of the lactones 5 with one exception have been found to be of the E form on the basis of the NMR spectra.
由 γ-三甲基硅氧基腈生成的 α-氰基碳离子与醛反应生成 α-(1-羟基烷基)-γ-三甲基硅氧基腈(6)。α-(1- 羟基烷基)-γ-三甲基硅氧基腈(6)。根据核磁共振光谱,发现内酯 5 的立体化学结构为 E 型,只有一个例外。
Regiospecificity of reactions of epoxides and oxetanes with trimethylsilyl cyanide