Twenty-seven 3- and 4-substituted aryl benzoates have been hydrolysed with sodium hydroxide in ethanol–water (6:4 v/v). The kinetic data are correlated by the Hammett equation with ρ= 1·93. Rate enhancements for para-conjugatively electron-withdrawing substituents (–M) are small, diagnostic of a transition state in which there is at most only slight fission of the aryloxy-carbon bond.
Z. S. Chaw, A. Fischer and D. A. R. Happer, J. Chem. Soc. B, 1971, 1818 DOI: 10.1039/J29710001818
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