Cobalt(III)-Catalyzed Regio- and Stereoselective α-Fluoroalkenylation of Arenes with gem-Difluorostyrenes.

A cobalt(III)-catalyzed α-fluoroalkenylation of different arenes with readily available gem-difluorostyrenes has been realized under mild and redox-neutral conditions. This reaction occurs via a C-H activation pathway and offers a step-economical access to various 1,2-diaryl-substituted monofluoroalkenes in excellent Z selectivity in moderate to excellent yields.