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Notes on the Asymmetric Hydrogenation of Methyl Acetoacetate in Neoteric Solvents

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    0341581 - ÚCHP 2011 RIV US eng J - Journal Article
    Floriš, Tomáš - Klusoň, Petr - Muldoon, M. - Pelantová, Helena
    Notes on the Asymmetric Hydrogenation of Methyl Acetoacetate in Neoteric Solvents.
    Catalysis Letters. Roč. 134, 3-4 (2010), s. 279-287. ISSN 1011-372X. E-ISSN 1572-879X
    R&D Projects: GA ČR(CZ) GD203/08/H032; GA AV ČR KAN400720701
    Institutional research plan: CEZ:AV0Z40720504; CEZ:AV0Z50200510
    Keywords : asymmetric hydrogenation * Ru-BINAP * ionic liquid
    Subject RIV: CF - Physical ; Theoretical Chemistry
    Impact factor: 1.907, year: 2010

    Asymmetric hydrogenation of methyl acetoacetate to methyl (R)-3-hydroxybutyrate by [(R)- RuCl(binap)(p-cymen)]Cl has been studied in methanol-ionic liquid and methanol- dense CO2 solvent systems. The ionic pairs triethylhexylammonium and 1-methylimidazolium with bis(trifluoromethane sulfonyl) imide and hexafluorophosphates were used. The role of ionic pairs on the kinetic parameters and (enantio)selectivity has been demonstrated. Although the CO2 expanded methanol system suffered from a reduction in both reaction rate and product selectivity, this changed in the presence of water.
    Permanent Link: http://hdl.handle.net/11104/0184517

     
     
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