Dual Photoredox/Cobaloxime Catalysis for Cross-Dehydrogenative α‑Heteroarylation of Amines

We report a dual-catalytic platform for the cross-dehydrogenative-coupling between (benzo-)­thiazoles and amines which combines low loadings of an iridium photoredox catalyst and a cobaloxime catalyst under blue light irradiation. This transformation occurs without stoichiometric oxidants, giving products in moderate to excellent yields. DFT calculations support the key role of Co­(II) for rearomatization of the radical-addition intermediate to generate the product.