Palladium-Mediated Heck-Type Reactions of [(Bromodifluoromethyl)sulfonyl]benzene: Synthesis of α-Alkenyl- and α-Heteroaryl-Substituted α,α-Difluoromethyl Phenyl Sulfones
Palladium-catalyzed Heck-typereactions of [(bromodifluoromethyl)sulfonyl]benzene (1) with styrene derivatives and heteroaromatic compounds successfully gave α-alkenyl- and α-heteroaryl-substitutedα,α-difluoromethylphenylsulfones, respectively.
Visible Light-Mediated C–H Difluoromethylation of Electron-Rich Heteroarenes
作者:Yi-Ming Su、Yu Hou、Feng Yin、Yue-Ming Xu、Yan Li、Xiaoqi Zheng、Xi-Sheng Wang
DOI:10.1021/ol501094z
日期:2014.6.6
A novel method for visible-light photoredox-catalyzed difluoromethylation of electron-rich N-, O-, and S-containingheteroarenes under mild reaction conditions is developed. Mechanistic investigation indicates that the net C–H difluoromethylation proceeds through an electrophilic radical-type pathway.