Ecofriendly Fast Synthesis of Hydrophilic Poly(ethyleneglycol)-Ionic Liquid Matrices for Liquid-Phase Organic Synthesis

Abstract : New, hydrophilic poly(ethyleneglycol)-ionic liquids have beensynthesized and investigated, based on 1,3-disubstituted imidazolium cations and fluorinated anions (BF4 -, PF6 -,(CF3SO2)2N-, or NTf2 -). A series of typical solvent-free reactions have been safely realized using a focused microwave reactor for the preparation of imidazolium chloride precursors in yields ranging from 73 to 94% followed by quantitative anion metathesis exchanges. The poly(ethyleneglycol)-ionic liquid matrices were also characterized by NMR (1H, 13C), mass spectrometry (MS), and their dynamic viscosity was determined at 25 °C. These poly(ethyleneglycol)-ionic liquid phases (PEGILPs) as task-specific ionic liquids are promising tools for synthetic applications in liquid-phase combinatorial chemistry.
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Joan Fraga-Dubreuil, Marie-Hélène Famelart, Jean-Pierre Bazureau. Ecofriendly Fast Synthesis of Hydrophilic Poly(ethyleneglycol)-Ionic Liquid Matrices for Liquid-Phase Organic Synthesis. Organic Process Research and Development, American Chemical Society, 2002, 6, pp.374-378. ⟨10.1021/op020027y⟩. ⟨hal-02244983⟩

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