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Dual activity of ruthenium catalysts in controlled radical reactions and olefin metathesis
Delaude, Lionel; Filmon, Karine; Delfosse, Sébastien et al.
20034th POLYCAT Meeting / Polymerization by single-site metal Catalysis
 

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Keywords :
ruthenium; N-heterocyclic carbene; ATRA; ATRP; olefin metathesis
Abstract :
[en] The catalytic activity of five ruthenium-arene complexes of the RuCl2(p-cymene)L type was investigated in controlled radical reactions and olefin metathesis. The ligands L were stable Nheterocyclic carbenes (NHCs) derived from imidazol-2-ylidene. They differed by the nature of the substituents on the nitrogen atoms (R1) and on the carbon-carbon double bond (R2) of the heterocyclic ring. Thus, R1 was either the mesityl or the cyclohexyl group, and R2 included methyl, hydrogen, or chloro substituents.The complexes were tested as initiators for the Atom Transfer Radical Addition (ATRA) of carbon tetrachloride to methyl methacrylate and styrene, for the Atom Transfer Radical Polymerization (ATRP) of methyl methacrylate and styrene, and for the Ring-Opening Metathesis Polymerization (ROMP) of cyclooctene. Some species displayed a dual activity and promoted both olefin metathesis and ATRP.
Disciplines :
Chemistry
Author, co-author :
Delaude, Lionel  ;  Université de Liège - ULiège > Département de chimie (sciences) > Chimie macromoléculaire et catalyse organique
Filmon, Karine
Delfosse, Sébastien
Richel, Aurore  ;  Université de Liège - ULiège > Chimie et bio-industries > Chimie biologique industrielle
Demonceau, Albert ;  Université de Liège - ULiège > Département de chimie (sciences) > Chimie macromoléculaire et catalyse organique
Noels, Alfred ;  Université de Liège - ULiège > Services généraux (Faculté des sciences) > Relations académiques et scientifiques (Sciences)
Language :
English
Title :
Dual activity of ruthenium catalysts in controlled radical reactions and olefin metathesis
Publication date :
May 2003
Event name :
4th POLYCAT Meeting / Polymerization by single-site metal Catalysis
Event place :
Sevilla, Spain
Event date :
May 8–9, 2003
Audience :
International
Available on ORBi :
since 07 June 2010

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