Abstract
The kinetics of base hydrolysis of amino acid esters, glycine-, histidine-, and methionine methyl esters in the presence of [Pd(Et(4)en))(H2O)(2)](2+) is studied in aqueous solution at 25 degrees C and I=0.1 mol dm(-1) (Et(4)en = N,N,N',N'-tetraethylethylenediamine). The rate of ester hydrolysis for glycine methyl ester is studied at different temperatures and dioxane- water solutions of different compositions. The kinetic data fit a model which assumes that hydrolysis proceeds in one step. Hydrolysis of the esters is catalyzed by [Pd(Et(4)en)(H2O)(2)](2+) with catalysis ratio values of 2.5 x 10(4), 3.15, and 7.43 for glycine-, histidine-, and methionine methyl esters, respectively. Activation parameters for the base hydrolysis are evaluated.