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A Convenient Synthesis of Triflate Anion Ionic Liquids and Their Properties
Merck KGaA, PM-ABE, Ionic Liquids Research Laboratory, Frankfurter Str. 250, Darmstadt D-64293, Germany
Inorganic Chemistry, Henrich-Heine-University Düsseldorf, Universitätsstrasse 1, Düsseldorf D-40225, Germany
Inorganic Chemistry, Bergische University Wuppertal, Gauss Str. 20, Wuppertal D-42119, Germany
Professor Emeritus, Inorganic Chemistry, University Duisburg-Essen, Lotharstrasse 1, Duisburg D-47048, Germany
* Author to whom correspondence should be addressed.
Received: 7 March 2012; in revised form: 13 April 2012 / Accepted: 13 April 2012 / Published: 7 May 2012
Abstract: A solvent- and halogen-free synthesis of high purity triflate ionic liquids via direct alkylation of organic bases (amines, phosphines or heterocyclic compounds) with methyl and ethyl trifluoromethanesulfonate (methyl and ethyl triflate) has been developed. Cheap and non-toxic dimethyl and diethyl carbonate serve as source for the methyl and ethyl groups in the preparation of methyl and ethyl triflate by this invented process. The properties of ionic liquids containing the triflate anion are determined and discussed.
Keywords: methyl triflate; ethyl triflate; ionic liquids; viscosity
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Ignat’ev, N.V.; Barthen, P.; Kucheryna, A.; Willner, H.; Sartori, P. A Convenient Synthesis of Triflate Anion Ionic Liquids and Their Properties. Molecules 2012, 17, 5319-5338.
Ignat’ev NV, Barthen P, Kucheryna A, Willner H, Sartori P. A Convenient Synthesis of Triflate Anion Ionic Liquids and Their Properties. Molecules. 2012; 17(5):5319-5338.
Ignat’ev, Nikolai V.; Barthen, Peter; Kucheryna, Andryi; Willner, Helge; Sartori, Peter. 2012. "A Convenient Synthesis of Triflate Anion Ionic Liquids and Their Properties." Molecules 17, no. 5: 5319-5338.