Results The Carboxylate Substituent.--nz-and p-carboxy-t-cumyl chlorides had been synthesized previously and their rates of hydrolysis determined in 9Oy0 aqueous acetone. 11f We attempted to observe the effect Gf the carboxylate substituent by adding sufficient potassium hydroxide to convert the carboxy group into the ionized derivative. However, the solvent separated in two phases and all attempts to work in more dilute solution or to use ...