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

Mathieu Rouen; Etienne Borré; Laura Faliverne; Loic Toupet; Mickaël Berthod; Luigi Cavallo; Hélène Olivier-Bourbigou; Marc Mauduit

doi:10.1039/c4dt00142g

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 GMCM - Groupe matière condensée et matériaux

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 : room-temperature idenylidene complexes N-heterocycli carbene bearing NHC ligand grubbs catalysis

Type de document :

Article dans une revue

Dalton Transactions, Royal Society of Chemistry, 2014, 43 (19), pp.7044-7049. 〈10.1039/c4dt00142g〉

Domaine :

Chimie / Catalyse

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

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

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