Shailendra Tiwari, A. Ahmad, V. Singh
Oct 1, 2020
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Journal
Indian Journal of Chemistry -Section B
Abstract
Potassium carbonate in poly (ethylene glycol-400) has been found to be a highly effective and efficient medium for the straight forward, convenient, one pot and green synthesis of diethyl/ethyl cyano-5-[substituted phenyl-2,3-dihydro-[1,3,4]thiadiazolidino [2, 3-c] – [1, 2, 4]-triazol -2yl] – malonate/acetate through intramolecular cycloelimination of Michael adducts formed between the reaction of 4-amino-5substituted phenyl-3-mercapto-1,2,4-triazole 1 with diethyl-2(ethoxymethylene) malonate and ethyl -2-cyano-3-ethoxyacrylate respectively. The structures of all the new compounds have been elucidated using IR, H and C NMR, mass spectral data and elemental analyses.