Nickel-Catalyzed Enantioselective Cross-Coupling of N-Hydroxyphthalimide Esters with Vinyl Bromides
摘要:
An enantioselective Ni-catalyzed cross-coupling of NT-hyciroxyphthalimide esters with Vinyl bromides is reported. The reaction proceeds under mild conditions and uses tetralds(N,N-dimethylamino)ethylene as a terminal organic reductant. Good functional group tolerance is demonstrated, with over 20 examples of reactions that proceed with >90% ee.
Nickel-Catalyzed Asymmetric Reductive Cross-Coupling Between Vinyl and Benzyl Electrophiles
作者:Alan H. Cherney、Sarah E. Reisman
DOI:10.1021/ja508067c
日期:2014.10.15
between vinyl bromides and benzyl chlorides has been developed. This method provides direct access to enantioenriched products bearing aryl-substituted tertiary allylic stereogenic centers from simple, stable starting materials. A broad substrate scope is achieved under mild reaction conditions that preclude the pregeneration of organometallic reagents and the regioselectivity issues commonly associated with
已开发出一种 Ni 催化的溴乙烯和苄基氯之间的不对称还原交叉偶联。该方法提供了从简单、稳定的起始材料直接获得带有芳基取代的叔烯丙基立体中心的对映体富集的产品。在温和的反应条件下实现了广泛的底物范围,排除了有机金属试剂的预生成和通常与不对称烯丙基芳基化相关的区域选择性问题。