Cyclization of Alkyne-Azide with Isonitrile/CO via Self-Relay Rhodium Catalysis
A self-relay rhodium(I)-catalyzed cyclization of alkyne-azides with two σ-donor/π-acceptor ligands (isonitriles and CO) to form sequentially multiple-fused heterocycle systems via tandem nitrene transformation and aza-Pauson-Khand cyclization has been dev