Metal- and Oxidant-Free Carbonylation of Benzylic and Allylic C−H Bonds with H2O via Dual Oxidative Radical-Polar Crossover

A visible-light photocatalytic carbonylation of both benzylic and allylic C–H bonds with H 2 O in a metal-, oxidant-, and additive-free manner via a dual oxidative radical-polar crossover (ORPC) process has been developed.