Abstract
Abstract Anthranilic acid and p-aminobenzoic acid were oxidized with peroxomonophosphoric acid in aqueous acid medium to the corresponding azoxy derivatives. Suitable rate laws for the double bell shaped pH rate profile were derived and rationalized on the basis of protonation of the amino group and ionization of the carboxyl group. The mechanism of oxidation involves the nucleophilic attack of nitrogen on the electrophilic peroxo oxygen. The reactivity of different peroxomonophosphoric acid species has been estimated.
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