Abstract
A rapid, improved, and environmentally benign synthesis of 5-substituted 2-amino-1,3,4-oxadiazoles by one-pot electrocyclization of acylthiosemicarbazones is reported. Controlled potential electrolysis was performed at room temperature in acetonitrile as non-aqueous solvent and LiClO4 as supporting electrolyte. The reaction products were characterized by spectroscopic methods and a mechanism was deduced from voltammetric data. Better yields at room temperature, shortest reaction time, and easy work-up are attractive features of this green procedure.
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