Cycloalkyl-based unsymmetrical unsaturated (U2)-NHC ligands : flexibility and dissymmetry in ruthenium-catalysed olefin metathesis.

Mathieu Rouen 1 Etienne Borré 1 Laura Faliverne 1 Loic Toupet 2 Mickaël Berthod 3 Luigi Cavallo 4 Hélène Olivier-Bourbigou 3 Marc Mauduit 1
1 ISCR - Institut des Sciences Chimiques de Rennes
2 IPR - Institut de Physique de Rennes
3 IFPEN - IFP Energies nouvelles
4 Dipartimento di Ingegneria Chimica e Alimentare (Salerno, Italy)
Abstract : Air-stable Ru-indenylidene and Hoveyda-type complexes bearing new unsymmetrical unsaturated N-heterocyclic carbene (U2-NHC) ligands combining a mesityl unit and a flexible cycloalkyl moiety as N-substituents were synthesised. Structural features, chemical stabilities and catalytic profiles in olefin metathesis of this new library of cycloalkyl-based U2-NHC Ru complexes were studied and compared with their unsymmetrical saturated NHC-Ru homologues as well as a set of commercially available Ru-catalysts bearing either symmetrical SIMes or IMes NHC ligands.
Keywords : grubbs catalysis NHC ligand bearing N-heterocycli carbene idenylidene complexes room-temperature
Type de document :
Article dans une revue
Dalton Transactions, Royal Society of Chemistry, 2014, 43 (19), pp.7044-7049. 〈10.1039/c4dt00142g〉
Domaine :
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Mathieu Rouen, Etienne Borré, Laura Faliverne, Loic Toupet, Mickaël Berthod, et al.. Cycloalkyl-based unsymmetrical unsaturated (U2)-NHC ligands : flexibility and dissymmetry in ruthenium-catalysed olefin metathesis.. Dalton Transactions, Royal Society of Chemistry, 2014, 43 (19), pp.7044-7049. 〈10.1039/c4dt00142g〉. 〈hal-01068360〉

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