Direct gem-difluoromethylenation of sp3-hybridized carbon center through copper-mediated radical/radical cross-coupling for the construction of a CH2–CF2 linkage†
Minjun Xu,Wenjun Lu,Wenfeng Tian,Wen Wan,Yunrong Chen,Hongmei Deng,Shaoxiong Wu
Chemical Communications Pub Date : 08/27/2015 00:00:00 , DOI:10.1039/C5CC05677B
Abstract

Efficient direct gem-difluoromethylenation of an sp3-hybridized carbon center in benzyl bromides using benzo-1,3-azolic (oxa-, thia- or aza-) difluoromethyl bromides for construction of a CH2–CF2 linkage has been developed through radical/radical C–C cross-coupling via two separate single electron transfer processes (SET) under the promotion of different copper sources.

Graphical abstract: Direct gem-difluoromethylenation of sp3-hybridized carbon center through copper-mediated radical/radical cross-coupling for the construction of a CH2–CF2 linkage