Abstract
Substitution reactions of fourteen para- and meta-substituted anilines with benzenesulphonyl chloride in different mole fractions of propan-2-ol in 2-methylpropan-2-ol have been investigated conductometrically. The second order rate constants correlates satisfactorily with pK a values of the anilines and also with the Hammett's substituent constant. The para-substituted anilines shows a satisfactory correlation with Charton's LDR equation. The results of these correlations indicate the formation of an electron deficient transition state. The rate data correlate satisfactorily with macroscopic solvent parameters such as relative permittivity, e r and polarity, E T N . Multiple correlation analysis of the rate data via Kamlet-Taft's solvatochromic parameters reveals that the solvent dipolarity/polarizability plays a dominant role in governing the reactivity.
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