Site-selective C–H difunctionalization of N-alkyl activated azaarenes via the synergistic catalysis of graphene oxide and visible light

Abstract

Employing heterogeneous cocatalyst-graphene oxide, light-induced site-selective difunctionalizations of pyridiniums/quinoliniums provided straightforward synthetic route toward C4- and C2-phosphonated pyridinone/quinolinone/quinolone cores under air atmosphere.