Visible-light induced decarboxylative alkylation of quinoxalin-2(1<i>H</i>)-ones at the C3-position
作者:Wenxuan Xue、Yingpeng Su、Ke-Hu Wang、Rong Zhang、Yawei Feng、Lindan Cao、Dangfeng Huang、Yulai Hu
DOI:10.1039/c9ob01169b
日期:——
simple and efficient method for the visible light induced direct carbon alkylation of quinoxalin-2(1H)-ones at the C3 position is described. This protocol employs cheap and readily available phenyliodine(III) dicarboxylates as the alkylation reagents to conduct decarboxylative radical coupling reaction with quinoxalin-2(1H)-ones. The process exhibits excellent compatibility to functional groups and
The first metal-free method for alkylation of quinoxalinones using cheap and stable aryl alkyl ketones as nucleophilic alkylation reagents is reported. This strategy greatly broadens the application channels of aryl alkyl ketones through carbon–carbon bond activation. In addition, the protocol has the advantages of simple operation, broad substrate scope, and good functional group tolerance.
Iron-catalyzed methylation of quinoxalin-2(1H)-ones with dimethyl sulfoxide under visible light irradiation
作者:Hong He、Zhongyi Zhang、Yicheng Zhang、Chao Zhou、Jie Liu、Lei Wang
DOI:10.1016/j.mcat.2024.113999
日期:2024.4
The synthesis of iron-catalyzed -methylation of quinoxalin-2(1)-ones using dimethyl sulfoxide as the methylating reagent is described herein. The cross-coupling reactions proceeded smoothly under visible-light irradiation, which generated the corresponding products in moderate to good yields. Further investigation on the application of the methylation reaction using readily available DMSO as the methylation