Abstarct: Electrochemistry has emerged as a powerful tool for the synthesis of complex organic molecules. The investigation of electro-oxidation of catechol and its derivative show that the formed o-quinones are quite reactive. O-quinones can be attacked as the Michael acceptors by solvent, supporting electrolyte and additives to producing various compounds through the 1,4-addition Michael reaction. In this direction, the electro-oxidation of catechol has been studied in the presence of 2-Acetyl-γ-butyrolactone at pH= 6.8 (0.15 M phosphate buffer) and in the presence of water:ethanol (90:10) as solvent. The results indicate that catechol and its derivatives react with 2-Acetyl-Gama-butyrolacton under EC mechanism and give products. The cyclic voltammetry and controlled potential coulometry were selected as methods for electrochemical studies and synthesis. The product has been characterized by IR, HNMR, TLC and melting point.