Visible Light as a Sole Requirement for Intramolecular C(sp3)–H Imination

A novel, simple, and practical visible-light-mediated intramolecular α-C(sp3)–H imination of tertiary aliphatic amines containing β-O-aryl oximes leading to N-heterocycles has been developed. The reaction was performed well at rt with tolerance of some functional groups. Importantly, the selective C–H functionalization did not require added catalyst, oxidant, additive, acid, and base; visible light was the sole requirement.