title: Air-stable {(C5H5)Co} catalysts for [2+2+2] cycloadditions.
abstract: Cobalt cyclopentadienyl complexes incorporating a fumarate and a CO ligand (see picture) efficiently catalyze inter- and intramolecular [2+2+2] cycloadditions of alkynes, nitriles, and/or alkenes to give benzenes, pyridines, or 1,3-cyclohexadienes. Unlike catalysts such as [CpCo(CO)(2)] or [CpCo(C(2)H(4))(2)] (Cp = C(5)H(5)), they are air-stable, easy to handle, compatible with microwave conditions, and do not necessarily require irradiation to be active.
authors.affiliation: Université Pierre et Marie Curie Paris 06, IPCM, FR2769, 4 Place Jussieu, 75252 Paris cedex 05, France.
authors.forename: Anaïs
authors.initials: A
authors.lastname: Geny
authors.forename: Nicolas
authors.initials: N
authors.lastname: Agenet
authors.forename: Laura
authors.initials: L
authors.lastname: Iannazzo
authors.forename: Max
authors.initials: M
authors.lastname: Malacria
authors.forename: Corinne
authors.initials: C
authors.lastname: Aubert
authors.forename: Vincent
authors.initials: V
authors.lastname: Gandon