title: Carbon monoxide-promoted carbene insertion into the aryl substituent of an N-heterocyclic carbene ligand: Buchner reaction in a ruthenium carbene complex.
abstract: In the presence of carbon monoxide, ruthenium carbenes give a net insertion/ring expansion (Buchner reaction) into one of the aromatic rings of the N-heterocyclic carbene ligand. In alkene metathesis applications, the N-heterocyclic carbene ligand is both robust and typically inert to reactions with the metal-bound carbene. This unique reaction is completely regioselective. The complexes obtained through ring expansion were fully characterized in the solid state using X-ray crystallography and in solution using NMR and IR spectroscopy.
authors.affiliation: Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, New York 14260-3000, USA.
authors.forename: Brandon R
authors.initials: BR
authors.lastname: Galan
authors.forename: Milan
authors.initials: M
authors.lastname: Gembicky
authors.forename: Paulina M
authors.initials: PM
authors.lastname: Dominiak
authors.forename: Jerome B
authors.initials: JB
authors.lastname: Keister
authors.forename: Steven T
authors.initials: ST
authors.lastname: Diver