Remote Regioselective Radical C–H Functionalization of Unactivated C–H Bonds in Amides: The Synthesis of <i>gem</i>-Difluoroalkenes
作者:Qu-Ping Hu、Jing Cheng、Ying Wang、Jie Shi、Bi-Qin Wang、Ping Hu、Ke-Qing Zhao、Fei Pan
DOI:10.1021/acs.orglett.1c01385
日期:2021.6.4
The site-selective functionalization of unactivated aliphatic amines is an attractive and challenging synthetic approach. We herein report a general strategy for the remote site-selective functionalization of unactivated C(sp3)–H bonds in amides by photogenerated amidyl radicals to form gem-difluoroalkenes with trifluoromethyl-substituted alkenes. The site selectivity is controlled by a 1,5-hydrogen