European Journal of Organic Chemistry, volume 2009, issue 25, pages 4254-4265
Towards Long-Living Metathesis Catalysts by Tuning the N-Heterocyclic Carbene (NHC) Ligand on Trifluoroacetamide-Activated Boomerang Ru Complexes
HERVÉ CLAVIER
1
,
Fréderic Caijo
2
,
Etienne Borré
3
,
Diane Rix
3
,
Fabien Boeda
4
,
Steven P. Nolan
1
,
Marc Mauduit
3
2
Ωcat SYSTEM®, Ecole Nationale Supérieure de Chimie de Rennes, Av. du Général Leclerc, 35700 Rennes, France, Fax: +33-2-23238108
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Sciences Chimiques de Rennes, UMR 6226 CNRS, Equipe Chimie Organique et Supramoléculaire, Ecole Nationale Supérieure de Chimie de Rennes, Av. du Général Leclerc, 35700 Rennes, France, Fax: +33-2-23238108
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Publication type: Journal Article
Publication date: 2009-09-01
scimago Q2
SJR: 0.584
CiteScore: 5.4
Impact factor: 2.5
ISSN: 1434193X, 10990690
Organic Chemistry
Physical and Theoretical Chemistry
Abstract
The synthesis and characterization of three novel trifluoromethylamido-containing “boomerang” precatalysts bearing various N-heterocyclic carbene (NHC) ligands are reported. Comparative kinetic and stability studies show the significant effect of the NHC on the catalyst reaction profile. An investigation of the reaction scope for diverse metathesis transformations has allowed us to establish the influence of the NHC on catalyst activity, especially as a function of substrate steric bulk. The excellent stability of one of the novel
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