Promotional effects of metal polymer complexes. on the hydrolysis of amino acid esters: A study with cobalt(II) and nickel(II) complexes

Abstract

Aquacomplexes of Co(II) and Ni(II) with a polymer involving glutamic acid and 1,2-ethane diol have been prepared and characterized. The kinetics of base hydrolysis of amino acid esters such as cystine dimethyl ester dihydrochloride, glycine methyl ester hydrochloride, methionine methyl ester hydrochloride and tyrosine methyl ester hydrochloride have been studied using <i>p</i>H-stat method. The rate of hydrolysis is influenced substantially by these complexes. It is found that metal polymeric complexes are catalytically about 100 times more efficient than the corresponding metal ions.