VOLTAMMETRIC STUDIES ON SOME ARYLHYDRAZONES OF ALPHA-CYANOKETONES AND ALPHA-CYANOESTERS

The redox characteristics of the title compounds have been studied using DC. cyclic voltammetry and coulometry in benzonitrile at RDE. These compounds are oxidised in one-electron transfer process followed by deprotonation leading to dimerisation. The reduction process differs according to the nature of the compound and the electron-withdrawing power of the substituent in the is-proportional-to position. They can be reduced in a single two-electron or two one-electron waves leading in both the cases to saturation of the hydrazouic moiety.