Copper-Catalyzed Diamination of Alkenes using o‑Benzoylhydroxylamines to Access the Four Azaindoline Families

A mild and efficient method for the copper-catalyzed diamination of alkenes is described. In this reaction, o-benzoylhydroxylamine serves as an electrophilic nitrogen source for the regioselective formation of C–N bonds. This transformation provides a novel strategy for synthesizing all four isomeric 2,3-disubstituted azaindoline families and offers a wide substrate scope.