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Cited by 268

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A Simple and Practical Method for the Preparation and Purity Determination of Halide‐Free Imidazolium Ionic Liquids

Cassol, Claúdia C., Ebeling, Günter, Ferrera, Bauer, Dupont, Jairton·2006·Advanced Synthesis & Catalysis

Abstract

The reaction of N‐alkylimidazole with alkyl sulfonates at room temperature affords 1,3‐dialkylimidazolium alkanesulfonates as crystalline solids in high yields. The alkanesulfonate anions can be easily substituted by a series of other anions [BF 4, PF 6, PF 3(CF 2 CF 3)3, CF 3 SO 3 and N(CF 3 SO 2)2] by simple reaction of anions, salts, or acids in water at room temperature. Extraction with dichloromethane, filtration through a short basic alumina column and solvent evaporation affords the desired ionic liquids in 80–95% yield. The purity (>99.4%) of these ionic liquids can be determined by 1 H NMR spectra using the intensity of the 13 C satellites of the imidazolium N‐methyl group as internal standard.

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Metadata

Authors
Cassol, C. C., Ebeling, G., Ferrera, B., & Dupont, J.
Venue
Advanced Synthesis & Catalysis
Publisher
Wiley
Published
2006-01
Volume
348
Issue
1-2
Pages
243-248
ISSN
  • 1615-4150 (ISSN-L)
  • 1615-4169
OpenAlex
W1964581772
Cited by
268
References
2
FWCI
10.99
Type
journal article
Language
en
Open access
closed

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