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Cited by 229

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Manipulating Solute Nucleophilicity with Room Temperature Ionic Liquids

Crowhurst, Lorna, Lancaster, N. Llewellyn, Pérez Arlandis, Juan M., Welton, Tom·2004·Journal of the American Chemical Society

Abstract

In this work we report the effect of ionic liquids on a class of charge-neutral nucleophiles. We have studied the reactions of (n)butylamine, di-(n)butylamine, and tri-(n)butylamine with methyl p-nitrobenzenesulfonate in [bmpy][N(Tf)(2)], [bmpy][OTf], and [bmim][OTf] (bmpy = 1-butyl-1-methylpyrrolidinium; bmim = 1-butyl-3-methylimidazolium) and compared their reactivities, k(2), to those for the same reactions in the molecular solvents dichloromethane and acetonitrile. It was shown that all of the amines are more nucleophilic in the ionic liquids than in the molecular solvents studied in this work. Comparison is also made with the effect of ionic liquids on the reactivity of chloride ions, which are deactivated in ionic liquids. The Eyring activation parameters revealed that changes in the activation entropies are largely responsible for the effects seen. This can be explained in part by the differing hydrogen-bonding properties, as shown by the Kamlet-Taft solvent parameters, of each of these solvents and the formation of hydrogen bonds between the solvents and the nucleophiles.

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Metadata

Authors
Crowhurst, L., Lancaster, N. L., Pérez Arlandis, J. M., & Welton, T.
Venue
Journal of the American Chemical Society
Published
2004-08-27
Volume
126
Issue
37
Pages
11549-11555
ISSN
  • 0002-7863 (ISSN-L)
  • 1520-5126
OpenAlex
W1994765455
Cited by
229
References
1
FWCI
8.91
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: Manipulating Solute Nucleophilicity with Room Temperature Ionic Liquids. https://app.cochat.ai/papers/10.1021/ja046757y
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Crowhurst, L., Lancaster, N. L., Pérez Arlandis, J. M., & Welton, T. (2004). Manipulating Solute Nucleophilicity with Room Temperature Ionic Liquids. Journal of the American Chemical Society. https://doi.org/10.1021/ja046757y

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