title: Regio- and Stereoselective Hydrosilylation of Unsymmetrical Alkynes Catalyzed by a Well-Defined, Low-Valent Cobalt Catalyst.
abstract: Herein, the use of a well-defined low-valent cobalt(I) catalyst [HCo(PMe3)4] capable of performing the highly regio- and stereoselective hydrosilylation of internal alkynes is reported. The reaction can be applied to a variety of hydrosilanes, symmetrical and unsymmetrical alkynes, giving in many cases a single hydrosilylation isomer. Experimental and theoretical studies suggest the key step to be a hydro-cobaltation and that the reaction proceeds through a classical Chalk-Harrod mechanism.
authors.affiliation: UPMC UNIV Paris 06, Institut Parisien de Chimie Moléculaire, UMR CNRS 8232 , Case 229, 4 Place Jussieu, Paris 75252 Cedex 05, France.
authors.forename: Alejandro
authors.initials: A
authors.lastname: Rivera-Hernández
authors.affiliation: UPMC UNIV Paris 06, Institut Parisien de Chimie Moléculaire, UMR CNRS 8232 , Case 229, 4 Place Jussieu, Paris 75252 Cedex 05, France.
authors.forename: Brendan J
authors.initials: BJ
authors.lastname: Fallon
authors.affiliation: UPMC UNIV Paris 06, Institut Parisien de Chimie Moléculaire, UMR CNRS 8232 , Case 229, 4 Place Jussieu, Paris 75252 Cedex 05, France.
authors.forename: Sandrine
authors.initials: S
authors.lastname: Ventre
authors.affiliation: UPMC UNIV Paris 06, Institut Parisien de Chimie Moléculaire, UMR CNRS 8232 , Case 229, 4 Place Jussieu, Paris 75252 Cedex 05, France.
authors.forename: Cédric
authors.initials: C
authors.lastname: Simon
authors.affiliation: UPMC UNIV Paris 06, Institut Parisien de Chimie Moléculaire, UMR CNRS 8232 , Case 229, 4 Place Jussieu, Paris 75252 Cedex 05, France.
authors.forename: Marie-Hélène
authors.initials: MH
authors.lastname: Tremblay
authors.affiliation: UPMC UNIV Paris 06, Institut Parisien de Chimie Moléculaire, UMR CNRS 8232 , Case 229, 4 Place Jussieu, Paris 75252 Cedex 05, France.
authors.forename: Geoffrey
authors.initials: G
authors.lastname: Gontard
authors.affiliation: UPMC UNIV Paris 06, Institut Parisien de Chimie Moléculaire, UMR CNRS 8232 , Case 229, 4 Place Jussieu, Paris 75252 Cedex 05, France.
authors.forename: Etienne
authors.initials: E
authors.lastname: Derat
authors.affiliation: UPMC UNIV Paris 06, Institut Parisien de Chimie Moléculaire, UMR CNRS 8232 , Case 229, 4 Place Jussieu, Paris 75252 Cedex 05, France.
authors.forename: Muriel
authors.initials: M
authors.lastname: Amatore
authors.affiliation: UPMC UNIV Paris 06, Institut Parisien de Chimie Moléculaire, UMR CNRS 8232 , Case 229, 4 Place Jussieu, Paris 75252 Cedex 05, France.
authors.forename: Corinne
authors.initials: C
authors.lastname: Aubert
authors.affiliation: UPMC UNIV Paris 06, Institut Parisien de Chimie Moléculaire, UMR CNRS 8232 , Case 229, 4 Place Jussieu, Paris 75252 Cedex 05, France.
authors.forename: Marc
authors.initials: M
authors.lastname: Petit