Regioselective and Switchable meso-Aminations and Couplings of 5,15-Diarylchlorins

Controllable chemo- and regiodivergent amination reactions of anilines and chlorins are accomplished by employing different oxidants and substrates, constructing aminated chlorin monomers and dimers with high structural diversity. Importantly, besides preferential 20-meso-position, the oxidative amination was also realized at the inactive 10-meso-position by using phenyliodine bis­(trifluoroacetate) (PIFA) and gold­(III)-based reagents.