Divergent Photoreactions of Ketones

Jian and Xiao’s study of the divergent reactions of benzoylformates is online at Org Lett! This paper shows how the rational choice of reaction conditions can partition a photocatalytic reaction between photoredox and triplet sensitization manifolds and thus result in completely different products from the same reactants. It was a privilege to publish back-to-back with the Schindler group’s study of Paternò–Büchi cycloadditions.