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.
