Cyclization of Diazoacetamides Catalyzed by N-Heterocyclic Carbene Dirhodium(II) Complexes - Gomes, Luis F. R.; Trindade, Alexandre F.; Candeias, Nuno R.; Veiros, Luís F.; Gois, Pedro M. P.; Afonso, Carlos A. M. (Synthesis, 2009)