title: Specific synthesis of 1,2- and 1,3-dialkylidenecycloheptanes by [3+2+2] cyclization of alkenyl Fischer carbene complexes and allenes.
abstract: The 1,2- and 1,3-dialkylidenecycloheptane rings are specifically assembled from chromium alkenyl Fischer carbene complexes and allenes via [3+2+2] cyclization reactions. The former cycloadducts are obtained when the cyclization is performed in the presence of 1 equiv of [Ni(cod)2], while the [Rh(cod)Cl]2-catalyzed cyclization leads to the latter cycloadducts.
authors.affiliation: Instituto Universitario de Química Organometálica Enrique Moles, Unidad Asociada al CSIC, and Departamento de Química Física y Analítica, Universidad de Oviedo, Julián Clavería 8, 33071 Oviedo, Spain. barluenga@uniovi.es
authors.forename: José
authors.initials: J
authors.lastname: Barluenga
authors.forename: Rubén
authors.initials: R
authors.lastname: Vicente
authors.forename: Pablo
authors.initials: P
authors.lastname: Barrio
authors.forename: Luis A
authors.initials: LA
authors.lastname: López
authors.forename: Miguel
authors.initials: M
authors.lastname: Tomás
authors.forename: Javier
authors.initials: J
authors.lastname: Borge