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Issue 2, 2003
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Selective palladium-catalysed dimerisation of methyl acrylate in ionic liquids: towards a continuous process

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Abstract

The activity and stability of cationic palladium complexes [Pd(PBu3)2S2]2+ used for the selective tail-to-tail dimerisation of methyl acrylate are significantly improved with the utilisation of ionic liquids like [BMIM][BF4] or the protonated N-butyl-imidazole, [HBIM][BF4]. Problems related to product inhibition and catalyst recycling are overcome by running the reaction in a two-phase mode, toluene being used as extractant. Catalyst stabilisation is further improved by trapping the ancillary ligand into the ionic liquid with an ionic tail: with the use of 1-dibutylphosphino-2-dimethylaminoethane, the catalyst is stable for more than 100 h, therefore demonstrating the feasibility of a continuous process for methyl acrylate dimerisation.

Graphical abstract: Selective palladium-catalysed dimerisation of methyl acrylate in ionic liquids: towards a continuous process

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Publication details

The article was received on 03 Dec 2002 and first published on 27 Mar 2003


Article type: Paper
DOI: 10.1039/B212028N
Green Chem., 2003,5, 153-162

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    Selective palladium-catalysed dimerisation of methyl acrylate in ionic liquids: towards a continuous process

    M. Picquet, S. Stutzmann, I. Tkatchenko, I. Tommasi, J. Zimmermann and P. Wasserscheid, Green Chem., 2003, 5, 153
    DOI: 10.1039/B212028N

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