Free Radical Mediated Oxidative Decarboxylation of L-Proline by Peroxomonosulphate in Neutral Medium-Catalytic Effect of Copper (II)

Kinetics and mechanism of copper (II) catalyzed and uncatalyzed oxidation of L� proline by peroxomonosulphate (PMS) in neutral medium (phosphate buffer, pH 6�8) was studied at 278K. The reaction proceeded through free radical pathway which was confirmed by the non oxidation of Lproline methyl ester by P MS at this condition. Variation of ionic strength had negligible effect on the rate of the reaction which ruled out the interaction between carboxylate group of Lproline with SO 5 2� of PMS. The initial step was the removal