Recyclable gold(I)-catalyzed hydrohydrazidation of terminal alkynes towards keto-N-acylhydrazones
作者:Siqi Liu、Jianying Li、Wenli Hu、Bin Huang、Mingzhong Cai
DOI:10.1016/j.jorganchem.2022.122411
日期:2022.9
heterogeneous gold(I)-catalyzed hydrohydrazidation of terminal alkynes with diverse hydrazides has been developed in chlorobenzene at 60 °C by using an MCM-41-immobilized diphenylphosphine gold(I) complex [Ph2P-MCM-41-AuNTf2] as the catalyst, providing a novel and practical method for the synthesis of a wide variety of substituted keto-N-acylhydrazones in good to excellent yields. This heterogenized gold(I) catalyst
使用 MCM-41 固定的二苯基膦金 (I) 配合物 [Ph 2 P-MCM-41 ,在 60 °C 的氯苯中,开发了一种简便高效的非均相金 (I) 催化的末端炔烃与多种酰肼的加氢反应。-AuNTf 2 ] 作为催化剂,为合成多种取代的酮基-N-酰基腙提供了一种新颖实用的方法,产率从良好到优异。这种异质化的金 (I) 催化剂也很容易通过过滤反应混合物来回收,并且可以回收多达八次,而没有任何明显的催化效率损失。