Enantioselective construction of vicinal tetrasubstituted carbon stereocenters is a formidable challenge in organic synthesis. A copper-catalyzed asymmetric decarboxylative propargylic substitution with 3-amino oxindoles as trisubstituted carbon nucleophiles and propargylic cyclic carbonates as tertiary carbon electrophiles was developed. A range of 3-amino-3,3′-disubstituted oxindoles bearing vicinal quaternary-tetrasubstituted
邻位四取代碳立体中心的对映选择性构建是有机合成中的一项艰巨挑战。开发了一种铜催化的不对称脱羧炔丙基取代,其中 3-氨基羟吲哚作为三取代碳亲核试剂,炔丙基环状碳酸酯作为叔碳亲电试剂。以高产率和良好的立体选择性(高达 98% 的产率,>20:1 dr 和 98.5:1.5 er)获得了一系列带有连位季四取代碳立体中心的 3-氨基-3,3'-二取代羟吲哚.