Further electrochemical investigations of the oxidation of 1-phenylpyrazolidin-3-ones at high pH

The oxidation mechanism at pH 14 for a number of 1-phenylpyrazolidin-3-ones substituted in the 4 position of the heterocyclic ring has been investigated with electrochemical techniques. A general oxidation mechanism, resulting in the formation of a radical species and short-lived pyrazolinone tautomers has been postulated.