title: C-C Bond Formation between Fischer Carbene Complexes and Allylic Alcohols by a [3,4] Sigmatropic Rearrangement Promoted by a [1,2] M(CO)5 Shift.
abstract: A [1,2] M(CO)5 shift promotes a [3,4] sigmatropic rearrangement after the addition of allylic alcohols to Fischer alkenylcarbene complexes of tungsten or chromium in the presence of alkoxide ions. This opens a new synthetic route to the adducts 1. The reaction is also applicable to propargylic alcohols. [M]=Mo(CO)5 , W(CO)5 .
authors.affiliation: Instituto Universitario de Química Organometálica "Enrique Moles", Unidad Asociada al CSIC, Universidad de Oviedo, Julian Clavería 8, E-33071 Oviedo, Spain, Fax: (+34) 98-510-34-50. barluenga@sauron.quimica.uniovi.es.
authors.forename: J
authors.initials: J
authors.lastname: Barluenga
authors.forename: E
authors.initials: E
authors.lastname: Rubio
authors.forename: J A
authors.initials: JA
authors.lastname: López-Pelegrín
authors.forename: M
authors.initials: M
authors.lastname: Tomás
keywords: Carbene complexes; Chromium; Orthoesters; Rearrangements; Tungsten