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Olefin Epoxidation in Aqueous Phase Using Ionic-Liquid Catalysts

Title data

Cokoja, Mirza ; Reich, Robert M. ; Wilhelm, Michael E. ; Kaposi, Marlene ; Schäffer, Johannes ; Morris, Danny S. ; Münchmeyer, Christian J. ; Anthofer, Michael H. ; Markovits, Iulius I. E. ; Kühn, Fritz E. ; Herrmann, Wolfgang A. ; Jess, Andreas ; Love, Jason B.:
Olefin Epoxidation in Aqueous Phase Using Ionic-Liquid Catalysts.
In: ChemSusChem. Vol. 9 (2016) Issue 14 . - pp. 1773-1776.
ISSN 1864-564X
DOI: https://doi.org/10.1002/cssc.201600373

Abstract in another language

Hydrophobic imidazolium-based ionic liquids (IL) act as catalysts for the epoxidation of unfunctionalized olefins in water using hydrogen peroxide as oxidant. Although the catalysts are insoluble in both the substrate and in water, surprisingly, they are very well soluble in aqueous H2O2 solution, owing to perrhenate-H2O2 interactions. Even more remarkably, the presence of the catalyst also boosts the solubility of substrate in water. This effect is crucially dependent on the cation design. Hence, the imidazolium perrhenates enable both the transfer of hydrophobic substrate into the aqueous phase, and serve as actual catalysts, which is unprecedented. At the end of the reaction and in absence of H2O2 the IL catalyst forms a third phase next to the lipophilic product and water and can easily be recycled.

Further data

Item Type: Article in a journal
Refereed: Yes
Keywords: epoxidation; homogeneous catalysis; ionic liquids; solubility; two-phase catalysis
Institutions of the University: Faculties > Faculty of Engineering Science
Faculties > Faculty of Engineering Science > Chair Chemical Engineering
Faculties > Faculty of Engineering Science > Chair Chemical Engineering > Chair Chemical Engineering - Univ.-Prof. Dr.-Ing. Andreas Jess
Faculties
Result of work at the UBT: Yes
DDC Subjects: 500 Science > 540 Chemistry
600 Technology, medicine, applied sciences > 600 Technology
600 Technology, medicine, applied sciences > 620 Engineering
600 Technology, medicine, applied sciences > 660 Chemical engineering
Date Deposited: 11 Aug 2016 06:45
Last Modified: 11 Aug 2016 06:45
URI: https://eref.uni-bayreuth.de/id/eprint/34090