title: New Fischer carbene complexes of rhodium(i): preparation and 2-cyclopentenone ring synthesis by annelation to alkynes.
abstract: A new type of metal carbene complexes of group 9, specifically a cationic Fischer carbene of rhodium(I), has been synthesized from chromium carbene complexes via double transfer of carbene and CO ligands. These complexes reveal a different reactivity than other transition metal carbenes, including their chromium precursors, toward neutral and electron-poor alkynes, giving selectively polysubstituted cyclopentenones.
authors.affiliation: Instituto Universitario de Química Organometálica Enrique Moles-Unidad Asociada al C.S.I.C., Universidad de Oviedo, Julián Claveria, 8, 33006 Oviedo, Spain. barluenga@sauron.quimica.uniovi.es
authors.forename: José
authors.initials: J
authors.lastname: Barluenga
authors.forename: Rubén
authors.initials: R
authors.lastname: Vicente
authors.forename: Luis A
authors.initials: LA
authors.lastname: López
authors.forename: Eduardo
authors.initials: E
authors.lastname: Rubio
authors.forename: Miguel
authors.initials: M
authors.lastname: Tomás
authors.forename: Carmen
authors.initials: C
authors.lastname: Alvarez-Rúa