Abstract
Abstract The substituent effects on solvolysis of 2-aryl-2-(trifluoromethyl)ethyl m-nitrobenzenesulfonates, in acetic acid and in 80% aqueous trifluoroethanol, were analyzed by Yukawa-Tsuno equation. The resonance demands (r = 0.77 in acetic acid) were larger than that of standard aryl-assisted solvolysis by 0.2. This enlargement should depend on a destabilization of aryl-assisted transition-state by an electron-withdrawing trifluoromethyl group.
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