sulfoxide served as an efficient chiral enophile in a Lewis acid-catalyzed intramolecular ene ractions. Use of diethylaluminum chloride as a catalyst provided extremely high stereoselectivity in this ene reaction. Based on the stereochemical results obtained, a mechanistic pathway for this asymmetric induction is presented.
手性α-
氰基
乙烯基亚砜在
路易斯酸催化的分子内烯作用中作为有效的手性亲烯剂。在该烯反应中,使用
氯化二乙基铝作为催化剂提供了极高的立体选择性。基于获得的立体
化学结果,提出了这种不对称诱导的机理途径。