SEARCH Articles Figures Tables 5-Membered rings reaction with carbenes 5-Membered rings stable carbenes Aromatic compounds ring expansion with carbenes Carbene ring expansion Carbene-catalyzed ring-opening Carbene-catalyzed ring-opening polymerization Carbenes four-membered ring carbene Carbenes ring expansion Carbenes ring expansion with aromatic Carbenes ring-closing metathesis Carbenes ring-forming reactions Carbenes small rings, generation Carbenes, heterocyclic, ring-cleavage Chromium carbene complexes phenol ring Four-membered rings Chromium carbene complexes Indole ring expansion with carbenes Metathesis reactions, ring-closure carbene complexes Phenyl ring, carbene-based, metallation Ring closing metathesis , carbene synthesis Ring closing metathesis , carbene synthesis applications Ring opening reactions singlet carbenes Ring-opening metathesis polymerization carbene synthesis