EFFECT OF SURFACTANT MICELLES ON THE REACTIVITY OF PEROXY ANIONS TOWARD BIS (4-CHLORO-3,5-DIMETHYLPHENYL)PHOSPHATE

Abstract

The rate enhancement depends on the hydrophobicity of the nucleophile. The micellar catalyzed reaction between bis-4-chloro-3,5-dimethylphenylphosphate ester and hydroxide or hydroperoxide anions has been examined in buffered medium (pH 8-10). First order rate constant (K_ψ) for the reaction of hydroxide ion with bis-4-CDMPP go through maxima with the increasing concentration of cetyltrimethylammoniumbromide (CTABr). Micelles of CTABr very effective catalyst to the reactions of phosphate diesters. Rate constants measured with OH₂^- ions are approximately twice and thrice than that of OH^- ions in presence of CTABr