Functionalised Allylsilanes from Silylcopper Reagents and Allene. A Useful Strategy for Cyclopentane Annulations
作者:Asuncion Barbero、Carlos Garcı&#x;a、Francisco J. Pulido
DOI:10.1016/s0040-4020(00)00129-0
日期:2000.4
allylsilane-containing divinyl ketones and oxoallylsilanes, respectively. They undergo highly stereocontrolled silicon-assisted intramolecular cyclizations when treated with protic or Lewis acid leading to cyclopentane ring-formation.
使用苯基二甲基甲硅烷基铜或叔丁基二苯基甲硅烷基铜对丙二烯进行甲硅烷基化,然后与α,β-不饱和酰氯,醛或酮反应,分别得到含烯丙基硅烷的二乙烯基酮和氧代烯丙基硅烷。当用质子或路易斯酸处理时,它们会经历高度立体可控的硅辅助分子内环化反应,从而形成环戊烷环。