Structure−Reactivity Correlations in the Dissociative Hydrolysis of 2‘,4‘-Dinitrophenyl 4-Hydroxy-X-benzenesulfonates
作者:Giorgio Cevasco、Sergio Thea
DOI:10.1021/jo961024k
日期:1996.1.1
The hydrolysis reactions of several title esters in water at 60 degrees C follow the rate law k(obs) = (k(a) + k(b)[OH(-)])/(1 + a(H)/K(a)), where K(a) is the ionization constant of the hydroxy group of the ester and k(b) is the second-order rate constant for the S(N)2(S) attack of hydroxide ion on the ionized ester. Hammett and Brønsted correlations are consistent with a previous proposal that the