Silaheterocycles 36 (1). Trichlorovinylsilane, lithium-tert-butyl, and 1,3-enynes: A versatile combination for the competitive formation of silacyclobutanes and silacyclobutenes
Synthesis of terminal trimethylsilyl enynes via a silylated arsonium ylide
作者:Yanchang Shen、Qium Liao
DOI:10.1016/0022-328x(88)80114-1
日期:1988.5
The reaction of 3-(trimethylsilyl)-2-propynylidenetriphenylarsorane, generated in situ from the corresponding arsonium salt and n-butyllithium, with ketones gave terminal trimethylsilyl enynes in 72–100% yields. The stereochemical study revealed that the structure of the substrate displayed a profound effect, especially when a bulky t-butyl group was adjacent to the carbonyl group; in this case the