作者:P. Cazeau、F. Duboudin、F. Moulines、O. Babot、J. Dunogues
DOI:10.1016/s0040-4020(01)86789-2
日期:1987.1
A new, practical route to enoxysilanes is described from simple enolizable aldehydes or ketones, using the trimethylchlorosilane-sodium iodide—tertiary amine reagent in acetonitrile. From certain aldehydes, an onium intermediate has been isolated. A conformational study of this onium intermediate and a thermal unimolecular syn-elimination process may explain the stereoselectivity of the reaction. Such
描述了一种新的实用的方法,使用三甲基氯硅烷-碘化钠-叔胺试剂在乙腈中,由简单的可烯化的醛或酮制得环氧乙烷。从某些醛中,已分离出一种中间体。对这种鎓中间体和热单分子同消去过程的构象研究可以解释该反应的立体选择性。这样的解释可以扩展到所考虑的所有醛和酮。与羰基衍生物和胺的性质有关的立体因素对反应的区域和立体控制起着至关重要的作用。