Highly enantioselective desymmetrization of meso- and prochiral cyclic ketones via organocatalytic Michael reaction
                                
                                    
                                        作者:Jia-Rong Chen、Yuan-Yuan Lai、Hai-Hua Lu、Xu-Fan Wang、Wen-Jing Xiao                                    
                                    
                                        DOI:10.1016/j.tet.2009.09.005
                                    
                                    
                                        日期:2009.11
                                    
                                    An efficient and novel organocatalyst has been developed for the asymmetric desymmetrization of meso- and prochiral ketones by direct Michael addition to nitroolefins. This strategy can afford the desymmetrization products with excellent diastereo- (up to >99:1) and enantioselectivity (up to 96%) in great yields (up to 95%).
                                    通过直接将迈克尔加成到硝基烯烃中,已开发出一种高效新颖的有机催化剂,用于内消旋和前手性酮的不对称脱对称。这种策略可以以高收率(高达95%)提供具有出色的非对映异构体(高达> 99:1)和对映选择性(高达96%)的去对称化产物。