Issue 30, 2017

Rationalising the effects of ionic liquids on a nucleophilic aromatic substitution reaction

Abstract

The nucleophilic aromatic substitution reaction between 1-fluoro-2,4-dinitrobenzene and ethanol was examined in a series of ionic liquids across a range of mole fractions. Temperature-dependent kinetic analyses were undertaken to determine the activation parameters for this reaction at the highest mole fraction. As the mole fraction of ionic liquid was increased, the rate constant of the reaction also increased, however the microscopic origin of the rate enhancement was shown to be different between different ionic liquids and also between different solvent compositions. These results indicate a balance between microscopic interactions that result in the observed solvent effects and a qualitative method for analysing such interactions is introduced.

Graphical abstract: Rationalising the effects of ionic liquids on a nucleophilic aromatic substitution reaction

Associated articles

Supplementary files

Article information

Article type
Paper
Submitted
17 iyn 2017
Accepted
17 iyl 2017
First published
18 iyl 2017

Org. Biomol. Chem., 2017,15, 6433-6440

Rationalising the effects of ionic liquids on a nucleophilic aromatic substitution reaction

R. R. Hawker, M. J. Wong, R. S. Haines and J. B. Harper, Org. Biomol. Chem., 2017, 15, 6433 DOI: 10.1039/C7OB01476G

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