Synthesis of Naphtho[1',2':4,5]furo[3,2- b ]pyridinones via Ir(III)-Catalyzed C6/C5 Dual C-H Functionalization of N -Pyridyl-2-pyridones with Diazonaphthalen-2(1 H )-ones.

Presented herein is an unprecedented synthesis of naphtho[1',2':4,5]furo[3,2- b ]pyridinones via Ir(III)-catalyzed C6/C5 dual C-H functionalization of N -pyridyl-2-pyridones with diazonaphthalen-2(1 H )-ones. This protocol forms C-C and C-O bonds in one pot in which diazonaphthalen-2(1 H )-ones serve as bifunctional reagents, providing both alkyl and aryloxy sources. To the best of our knowledge, this is the first example of an Ir(III)-catalyzed synthesis of the title compounds by using diazonaphthalen-2(1 H )-ones as bifunctional substrates. Notably, this method features operational simplicity, good functional group tolerance, high efficiency, and high atom economy.