Mild construction of N-fused polycyclic compounds via Rh(III)/EosinY co-catalyze C−H activation

The construction of N-fused polycyclic compounds at room temperature via the combination of transition-metal catalyst and photocatalyst has been reported. This novel work has successfully realized LED irradiated C−H activation of iodonium ylides. The strategy shows wide substrate scope and ideal functional group tolerance. Our work would be useful for the construction of various heterocyclic compounds.