title: Structure-reactivity relationship in alkane metathesis using well-defined silica-supported alkene metathesis catalyst precursors.
abstract: Alkane metathesis can be performed by using well-defined silica-supported alkene metathesis catalyst precursors as long as the coordination sphere of the metal centre contains both alkyl and alkylidene groups, such as in [([triple chemical bond]SiO)Mo([triple chemical bond]NAr)(=CHtBu)(CH2tBu)]. This system transforms mainly linear alkanes, from propane to hexane, into their lower and higher homologues. Mechanistic studies clearly show that alkene metathesis is a key step of this reaction and also suggest that this system is a single-site single-component system, namely, alkenes are formed and transformed on one site, which is in contrast to that observed with a mixture of catalysts.
authors.affiliation: Université de Lyon, Institut de Chimie de Lyon, C2P2 CNRS - Université Lyon 1 - ESCPE Lyon, 43 Bd du 11 Novembre 1918, 69616 Villeurbanne (France), Fax: (+33) 472-431-795.
authors.forename: Frédéric
authors.initials: F
authors.lastname: Blanc
authors.affiliation: Université de Lyon, Institut de Chimie de Lyon, C2P2 CNRS - Université Lyon 1 - ESCPE Lyon, 43 Bd du 11 Novembre 1918, 69616 Villeurbanne (France), Fax: (+33) 472-431-795.
authors.forename: Jean
authors.initials: J
authors.lastname: Thivolle-Cazat
authors.affiliation: Université de Lyon, Institut de Chimie de Lyon, C2P2 CNRS - Université Lyon 1 - ESCPE Lyon, 43 Bd du 11 Novembre 1918, 69616 Villeurbanne (France), Fax: (+33) 472-431-795.
authors.forename: Jean-Marie
authors.initials: JM
authors.lastname: Basset
authors.affiliation: Université de Lyon, Institut de Chimie de Lyon, C2P2 CNRS - Université Lyon 1 - ESCPE Lyon, 43 Bd du 11 Novembre 1918, 69616 Villeurbanne (France), Fax: (+33) 472-431-795.
authors.forename: Christophe
authors.initials: C
authors.lastname: Copéret