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Article Dans Une Revue European Journal of Inorganic Chemistry Année : 2010

Imidazolium-oxazoline salts in ruthenium catalysed allylic substitution and cross metathesis of formed branched isomers

Résumé

Imidazolium-oxazoline chlorides have been prepared from chloroacetonitrile and used to generate bidentate mixed NHC-oxazoline ligands for ruthenium-catalyzed substitution of cinnamyl chloride by phenols. These ligands associated to [RuCp*(MeCN)3][PF6] promote allylic substitution reactions at room temperature with high regioselectivity in favour of the branched isomers giving terminal alkenes. These allylic ethers have been involved in further ruthenium-catalyzed cross metathesis reactions with electron-deficient olefins to give unsaturated esters and aldehydes.

Domaines

Catalyse

Dates et versions

hal-00527918 , version 1 (20-10-2010)

Identifiants

Citer

H. Ben Ammar, B. Ben Hassine, Cédric Fischmeister, Pierre H. Dixneuf, Christian Bruneau. Imidazolium-oxazoline salts in ruthenium catalysed allylic substitution and cross metathesis of formed branched isomers. European Journal of Inorganic Chemistry, 2010, pp.4752-4756. ⟨10.1002/ejic.201000718⟩. ⟨hal-00527918⟩
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