Investigation of the Oxidation-Reduction Characteristics of Heterocyclic Quinones

An electrochemical investigation was undertaken into the oxidation–reduction characteristics of heterocyclic quinones including derivatives of indazole, benzimidazole, benzofuran, benzothiazole, and isoquinoline. It was established that the compounds are reduced with the successive irreversible transfer of two electrons. The effect of structural factors and the nature of the heterocycle on the ease of reduction of the compounds is examined.