作者:Zhang, Jiwu、Liang, Zhikun、Chong, Qinglei、Meng, Fanke
DOI:10.1002/cjoc.202400641
日期:——
Catalytic methylative coupling of internal alkynes and aldehydes/aldimines through regioselective oxidative cyclization promoted by a phosphine–Co complex is presented. Such process constitutes an unprecedented and unique approach for Co-catalyzed generation of metallacycles that reversed inherent regiochemical biases to furnish a wide range of allylic alcohols and allylic amides bearing a tetrasubstituted
介绍了内部炔烃和醛/醛二胺通过膦-Co 络合物促进的区域选择性氧化环化的催化甲基化偶联。这种工艺构成了一种前所未有的独特方法,用于共催化产生金属环,该方法逆转了固有的区域化学偏倚,以提供广泛的烯丙基醇和烯丙基酰胺,带有四取代烯烃的产量高达 98%,具有高区域选择性,代表了在金属催化氧化环化中逆转底物控制区域选择性的新型通用策略。