Effect of nucleophile on the activation parameters of transesterification of 4-nitrophenyl benzoates
- 1 March 2010
- journal article
- Published by Pleiades Publishing Ltd in Russian Journal of Organic Chemistry
- Vol. 46 (3) , 326-330
- https://doi.org/10.1134/s1070428010030048
Abstract
Activation parameters of the reaction of 4-nitrophenyl benzoates with benzenethiol in the presence of potassium carbonate in dimethylformamide were determined. The entropies of activation for the reactions of unsubstituted 4-nitrophenyl benzoate and 4-nitrophenyl benzoates having donor substituents are positive. The relative contributions of the enthalpy and entropy of activation to the Gibbs energy of activation are discussed. Variation of the activation parameters upon replacement of benzenethiol by 4-chlorophenol is analyzed.Keywords
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