Abstract
In this work, a green-electrochemical synthesis was applied on oxidation of catechol (1) to o -benzoquinone (2) using cyclic voltammetry and controlled potential coulometry. Encouraging results were obtained and has been investigated in the presence of semicarbazide ( 3 ) as a nucleophile in an ethanol/phosphate buffer mixture (pH 7.0). The results showed that novel heterocyclic compound, triazinone, functionalized with hydroxyl and amide groups have been synthesised. The effect of pH, number of cycles, and scan rate were studied to attain a good yield and a high purity of products. The results indicate that the generated o -quinone ( 2 ) participates in a Michael addition reaction with nucleophilic hydrazide via EC mechanism to form the new triazinone adduct. After purification, the products have been characterized by IR, UV-Visible, 1 H and 13 C NMR methods. The green-electrochemical synthesis approach produced novel organics with excellent purities and yields while being environmentally friendly and free of hazardous reagents.
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