Collect. Czech. Chem. Commun. 1994, 59, 528-538

Permanganate Oxidation of L-Alanine in Acidic Solvent: Autocatalysis by Intermediate Mn(IV) Species

Maria J. Insausti, Fernando Mata-Pérez and Maria P. Alvarez-Macho

Departamento de Química-Física, Facultad Ciencias, Universidad de Valladolid, 47005 Valladolid, Spain


The kinetics of L-alanine oxidation by permanganate ion in buffer solutions at pH 2.2 have been studied. Both spectrophotometric and kinetic evidence is provided for the existence of an intermediate Mn(IV) species of colloidal nature. An autocatalytic course of the oxidation is discussed.