Rh-Catalyzed Regioselective <i>ortho</i>-C–H Carbenoid Insertion of Diarylazines
作者:Yunliang Yu、Changsheng Kuai、Remi Chauvin、Nian Tian、Shuangshuang Ma、Xiuling Cui
DOI:10.1021/acs.joc.7b01472
日期:2017.8.18
The Rh-catalyzed ortho-C–H carbenoidinsertion reaction of diarylazines with diazo compounds has been developed. A wide range of ortho-substituted diarylazines have been obtained in moderate to high yields with high regioselectivity at room temperature. The hydrolysis of the products could release ketones or aldehydes, giving access to aromatic 1,5-keto-diesters as valuable synthons for further chemical
A Rh-catalyzed intermolecular coupling of diazomalonates with arene C-H bonds is reported. The reaction is initiated by electrophilic C-H activation, which is followed by coupling of the arylrhodium(III) complex with the diazomalonate. In most cases, arenes with oximes, carboxylic acids, and amines as directing groups cross-couple with diazomalonates with excellent regioselectivities and functional