Transfer of a positively charged acyl group between substituted phenolate ion nucleophiles: the brønsted β for the calibrating equilibrium for N-methylisonicotinyl (4-carbonyl-N-methylpyridinium) transfer
作者:Matthew J. Colthurst、Matilde Nanni、Andrew Williams
DOI:10.1039/p29960002285
日期:——
measured for the reaction of substituted phenolate ions with aryl acetate esters and with aryl N-methylisonicotinate esters in aqueous solution. A new method is demonstrated for determining βeq for group transfer from 4-nitrophenyl esters; it employs the rate constant for the reaction of 2,6-difluorophenolate ion with substituted phenyl ester as a surrogate for the reactivity of the 4-nitrophenolate ion