Fig. 1

Formation of iminyl radical from anion/radical redox relay other than N-O cleavage or initiators. a Base-promoted benzylic C-H cleavage in the absence of transition metal catalysts followed by an addition to alkenes. b Two steps/pots anion-radical relay using metal oxidants. c Methods for the generation of iminyl radicals. d This work: naturally abundant copper salt catalyzed redox C-H cyclization via iminyl radical from intermolecular anion-radical relay