Abstract
Alkaline hydrolysis of N-benzyloxycarbonylglycine 4-nitrophenyl ester in the two-phase system chloroform-borate buffer (pH 10 and 11) in the presence of C16H33NMe3Br and Ph4PZ (Z = Cl, Br, I) at 25°C follows the extraction mechanism where the rate-determining stage is the chemical reaction in the organic phase. The different kinetic profiles of the reaction depending on the nature of Z- were explained in terms of concurrent extraction of three kinds of anions: nucleophile OH-, nucleofuge 4-NO2C6H4O-, and foreign ion Z-.
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