Reference : Ruthenium–arene catalysts bearing N-heterocyclic carbene ligands for olefin cycloprop...
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Chemistry
http://hdl.handle.net/2268/182848
Ruthenium–arene catalysts bearing N-heterocyclic carbene ligands for olefin cyclopropanation and metathesis
English
Méret, M. [Laboratory of Organometallic Chemistry and Homogeneous Catalysis, Institut de Chimie (B6a), Université de Liège, Sart-Tilman, Liège, Belgium, Max Planck Institute of Molecular Plant Physiology, Am Mühlenberg 1, Potsdam, Germany]
Maj, A. M. [Laboratory of Organometallic Chemistry and Homogeneous Catalysis, Institut de Chimie (B6a), Université de Liège, Sart-Tilman, Liège, Belgium, Ecole Nationale Supérieure de Chimie de Lille, Avenue Mendeleïev, BP 90108, Villeneuve d’Ascq, France]
Demonceau, Albert mailto [Université de Liège > Département de chimie (sciences) > Chimie macromoléculaire et catalyse organique >]
Delaude, Lionel mailto [Université de Liège > Département de chimie (sciences) > Chimie organométallique et catalyse homogène >]
2015
Monatshefte für Chemie = Chemical Monthly
Springer
146
7
1099-1105
Yes (verified by ORBi)
International
0026-9247
1434-4475
Vienna
Austria
[en] Arene complexes ; Cross-metathesis ; Homogeneous catalysis ; Ring-opening metathesis polymerization ; Structure–activity relationships
[en] Abstract: Ruthenium–arene complexes bearing N-heterocyclic carbene (NHC) ligands with the generic formula [RuCl2(p-cymene)(NHC)] are efficient catalyst precursors for the cyclopropanation of activated olefins with ethyl diazoacetate, and the cis/trans diastereoselectivity of the reaction markedly depends on the steric bulk of the NHC. The procedure was successfully applied to styrene, α-methylstyrene, and various other styrenic derivatives bearing electron-withdrawing or donating substituents on their aromatic rings. The reaction of unactivated internal or terminal alkenes was more sluggish, and the use of norbornene as a substrate afforded only olefin metathesis. Further investigation of the ring-opening metathesis polymerization of this strained cycloolefin in the presence of trimethylsilyldiazomethane led to high molecular weight polynorbornene whose microstructure was not significantly affected by the choice of the NHC ancillary ligand.
Researchers ; Professionals
http://hdl.handle.net/2268/182848
10.1007/s00706-015-1492-x

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