The alkaline hydrolysis of meta- and para-substituted phenyl benzoates has been followed conductimetrically. Specific rates, activation energies, and activation entropies have been evaluated. The rates for electron-withdrawing para-substituents correlate better with a four-parameter equation involving σ and σ– than with the standard Hammett equation.
A. A. Humffray and J. J. Ryan, J. Chem. Soc. B, 1967, 468 DOI: 10.1039/J29670000468
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