title: Latent ruthenium-indenylidene catalysts bearing a N-heterocyclic carbene and a bidentate picolinate ligand.
abstract: A silver-free methodology was developed for the synthesis of unprecedented N-heterocyclic carbene ruthenium indenylidene complexes bearing a bidentate picolinate ligand. The highly stable (SIPr)(picolinate)RuCl(indenylidene) complex 4a (SIPr = 1,3-bis(2-6-diisopropylphenyl)imidazolidin-2-ylidene) demonstrated excellent latent behaviour in ring closing metathesis (RCM) reaction and could be activated in the presence of a Brønsted acid. The versatility of the catalyst 4a was subsequently demonstrated in RCM, cross-metathesis (CM) and enyne metathesis reactions.
authors.affiliation: Ecole Nationale supérieure de chimie de rennes, UMR CNRS 6226, 11 Allée de Beaulieu, 35708, Rennes, cedex 7, France.
authors.forename: Thibault E
authors.initials: TE
authors.lastname: Schmid
authors.affiliation: Ecole Nationale supérieure de chimie de rennes, UMR CNRS 6226, 11 Allée de Beaulieu, 35708, Rennes, cedex 7, France.
authors.forename: Florian
authors.initials: F
authors.lastname: Modicom
authors.affiliation: Ecole Nationale supérieure de chimie de rennes, UMR CNRS 6226, 11 Allée de Beaulieu, 35708, Rennes, cedex 7, France.
authors.forename: Adrien
authors.initials: A
authors.lastname: Dumas
authors.affiliation: Ecole Nationale supérieure de chimie de rennes, UMR CNRS 6226, 11 Allée de Beaulieu, 35708, Rennes, cedex 7, France.
authors.forename: Etienne
authors.initials: E
authors.lastname: Borré
authors.affiliation: Institut de Physique de Rennes, Université de Rennes 1, CNRS, UMR 6251, Rennes Cedex, France.
authors.forename: Loic
authors.initials: L
authors.lastname: Toupet
authors.affiliation: Ecole Nationale supérieure de chimie de rennes, UMR CNRS 6226, 11 Allée de Beaulieu, 35708, Rennes, cedex 7, France.
authors.forename: Olivier
authors.initials: O
authors.lastname: Baslé
authors.affiliation: Ecole Nationale supérieure de chimie de rennes, UMR CNRS 6226, 11 Allée de Beaulieu, 35708, Rennes, cedex 7, France.
authors.forename: Marc
authors.initials: M
authors.lastname: Mauduit
keywords: latent catalyst; olefin metathesis; picolinate ligand; ruthenium indenylidene