Facile Formation of Semi-Reduced Radicals of cis-N,N'-Diacylindigos by Visible-Light-Induced One-Electron Transfer from Tertiary Amines

Article abstract of DOI:10.1246/cl.1986.1393

N,N'-Oxalyl and N,N'-malonyl derivatives of indigo and 6,6'-di-t-butylindigo were reduced with high quantum efficiencies to their semi-reduced radicals by visible light irradiation in the presence of tertiary amines.These semi-reduced radicals were reversibly autoxidized and thus oxidative dealkylation of tertiary amines was catalyzed photochemically by these indigos.