Photoinduced Metal- and Photosensitizer-Free Decarbonylative C–H Alkylation of Cyclic Sulfamidate Imines

Photoinduced decarbonylative C–C bond formation with readily accessible aldehydes as alkyl sources is described. This protocol provides a sustainable alternative for the effective construction of diverse valuable 4-alkylated sulfonyl ketimines under metal- and photosensitizer-free conditions. Significantly, in this reaction, air serves as the green oxidant, and cyclic sulfamidate imines play a dual role of substrate and photocatalyst, thus affording a concise reaction system for C–H alkylation of cyclic sulfamidate imines