Deoxygenative radical addition of aryl carboxylic acids to alkenes with phosphine in a two-molecule photoredox system

We report a two-molecule photoredox system that enables deoxygenative radical addition of aryl carboxylic acids to electron-deficient alkenes under mild conditions. The cooperative action of an organic photocatalyst and a phosphine facilitates acyl radical generation and efficient carbon-carbon bond formation without metal reagents.