The electrochem. oxidns. of some org. compds. have shown that only reactions involving simple electron transfer are active on diamond electrodes in the potential region of water stability. For more complex reactions, diamond electrodes show no electrocatalytic activity in the potential region of water stability. These complex reactions can take place on diamond electrodes only under conditions of simultaneous oxygen evolution. The reactivity of some alcs. and carboxylic acids has been studied on diamond electrodes and a simplified mechanism for the oxidn. of orgs. by electrogenerated OH radicals on diamond has been proposed. [on SciFinder (R)]