title: Observation of a hidden intermediate in the Stille reaction. Study of the reversal of the transmetalation step.
abstract: A study of the reaction of cis-[PdRf2(AsPh3)2] (Rf = 3,5-C6Cl2F3) with ISnBu3 (that is the reversal of the natural Stille reaction of [PdRfI(AsPh3)2] with RfSnBu3) allows for the observation of cis-[PdRf2(AsPh3)(ISnBu3)], the expected intermediate from a cyclic transmetalation in the direct Stille reaction, thus providing experimental support to the operation of cyclic transmetalation pathways.
authors.affiliation: IU CINQUIMA/Química Inorgánica, Facultad de Ciencias, Universidad de Valladolid, E-47071 Valladolid, Spain.
authors.forename: Mónica H
authors.initials: MH
authors.lastname: Pérez-Temprano
authors.forename: Ainara
authors.initials: A
authors.lastname: Nova
authors.forename: Juan A
authors.initials: JA
authors.lastname: Casares
authors.forename: Pablo
authors.initials: P
authors.lastname: Espinet