Photoredox radical/polar crossover enables C–H gem-difunctionalization of 1,3-benzodioxoles for the synthesis of monofluorocyclohexenes

A sequential C–H gem -difunctionalization of 1,3-benzodioxoles with α-trifluoromethyl alkenes and electron-deficient alkenes in a redox-neutral radical polar crossover manifold have been developed for the synthesis of monofluorocyclohexenes.