The Lewis acid-catalyzed intramolecular asymmetric ene reaction using a chiral α-cyanovinylic sulfoxide as an enophile
作者:Kunio Hiroi、Masayuki Umemura
DOI:10.1016/s0040-4020(01)80539-1
日期:1993.2
chiral enophile in a Lewis acid-catalyzed intramolecular ene reaction. Use of diethylaluminum chloride as a catalyst provided extremely high stereoselectivity in the ene reaction. The stereochemistry of the ene reaction products were determined by chemical correlation and the NMR spectral analysis. A mechanistic pathway for the asymmetric induction is presented on the basis of the stereochemical results
手性α-氰基乙烯基亚砜在路易斯酸催化的分子内烯反应中可作为有效的手性亲烯剂。使用氯化二乙基铝作为催化剂在烯反应中提供了极高的立体选择性。烯反应产物的立体化学通过化学相关性和NMR光谱分析来确定。根据获得的立体化学结果,提出了一种用于不对称诱导的机制途径。