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Quaternary Ammonium Ionic Liquids for Immobilization of Chiral Ru-BINAP Complexes in Asymmetric Hydrogenation of β-Ketoesters
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SYSNO ASEP 0334294 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Quaternary Ammonium Ionic Liquids for Immobilization of Chiral Ru-BINAP Complexes in Asymmetric Hydrogenation of β-Ketoesters Title Kvarterní amoniové IL pro zakotvení chirálního komplexu Ru-BINAP pro asymetrické hydrogenace beta keto esterů Author(s) Floriš, T. (CZ)
Klusoň, Petr (UCHP-M) RID, ORCID, SAI
Bartek, L. (CZ)
Pelantová, Helena (MBU-M) ORCID, RIDSource Title Applied Catalysis A - General. - : ELSEVIER SCIENCE BV - ISSN 0926-860X
Roč. 366, č. 1 (2009), s. 160-165Number of pages 6 s. Language eng - English Country NL - Netherlands Keywords asymmetric hydrogenation ; stereoselectivity ; ionic liquids Subject RIV CF - Physical ; Theoretical Chemistry R&D Projects GD203/08/H032 GA ČR - Czech Science Foundation (CSF) KAN400720701 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR) CEZ AV0Z40720504 - UCHP-M (2005-2011) AV0Z50200510 - MBU-M (2005-2011) UT WOS 000269758400020 DOI 10.1016/j.apcata.2009.07.002 Annotation Chiral catalytic complex (R)-[RuCl(binap)(p-cymene)]Cl was used in asymmetric hydrogenation of methyl acetoacetate to methyl-3-hydroxybutyrate in the mixed methanol-ionic liquid phase. Quaternary ammonium salts ionic liquids, namely n-alkyl-triethylammonium bis(trifluoromethane sulfonyl) imides (NR222Tf2N, R = 6, 7, 8, 10, 12, 14), were prepared and employed in this transformation. Enough evidence was provided that only a small amount of this type of IL in a conventional solvent was necessary to accommodate the catalytic complex and that the reaction could be carried out with very high enantioselectivity. Similarly it was proved that under optimized conditions the catalytic complex immobilized in this manner could be used repeatedly. Workplace Institute of Chemical Process Fundamentals Contact Eva Jirsová, jirsova@icpf.cas.cz, Tel.: 220 390 227 Year of Publishing 2010
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