Department of Chemistry, Regional Engineering College, Warangal-506 004 Department of Chemistry, S. V. University, Tirupati-517 502 Manuscript received 4 June 1992, revised 8 February 1993, accepted 19 February 1993 Substituted phenacyl bromides, like m-nitro, m-methoxy, p-phenyl, p-methoxy, p-methylphenacyl bromides have been reduced electrochemically under dropping mercury electrode and hanging mercury drop electrode employing d.c. polarography and cyclic voltammetry in 50% (v/v) DMF-water

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... ture. The cleavage of C-Br bond involves two-electron irreversible reduction process to give their corresponding acetophenones. Comparative account of their reduction behaviour in various supporting electrolytes is discussed. The kinetic parameters such as transfer coefficient, diffusion coefficient and heterogeneous forward rate constant values have been evaluated.