A chiral bicyclic guanidine was developed as a versatile Brønsted base catalyst for the enantioselective Michael reactions of dithiomalonates and β-keto thioesters using a range of acceptors including maleimides, cyclic enones, furanone and acyclic 1,4-dicarbonylbutenes.
                                    开发了一种手性双环
胍作为通用的布朗斯台德碱催化剂,使用一系列受体,包括马来
酰亚胺,环状烯酮,
呋喃酮和无环1,4-二羰基
丁烯,用于二
硫代
丙二酸酯和β-酮
硫代酸酯的对映选择性迈克尔反应。