Asymmetric epoxidation of α,β-unsaturated ketones via an amine-thiourea dual activation catalysis
作者:Lu-Wen Zhang、Li Wang、Nan Ji、Si-Yang Dai、Wei He
DOI:10.1016/j.tetlet.2021.152941
日期:2021.3
A simple asymmetricepoxidation method is developed to effectively synthesize chiral α-carbonyl epoxides through an amine-thiourea dual activation catalysis. In this method, TBHP, as an oxidant, determined the reaction rate, and the chiral amine-thiourea catalyst effectively controlled the stereoselectivity of the reaction, and KOH promoted deprotonation. 22 examples of α,β-unsaturated ketones with