Specific-Base Catalysed Hydrolysis of Methyl Salicylate and Isoamyl Salicylate in Water-Ethanol Binary Solvent System

摘要

Methyl salicylate and isoamyl salicylate have been hydrolysed in presence of hydroxide anion as catalyst in water-ethanol solvent mixtures at varying composition and temperature. Variations in specific rate constant and dielectric constant values have been determined at all the temperatures and the composition of organic co-solvent used. The thermodynamic activation parameters have also been evaluated using the experimental data. A reasonable interpretation of the experimental data has been given on the basis of solvent-solute interactions, solvation of the transition state and the dielectric behaviour of the medium.