SYNTHESIS AND CHARACTERIZATION OF SOME BENZOTHIAZOLOPYRAZOLINE DERIVATIVES
A new route for the synthesis of benzothiazolopyrazoline derivatives has been developed using various chalcone derivatives and 2-hydrazinobenzothiazole and piperidine catalyst. The product obtained in shorter reaction times and piperidine behaves as good catalyst for the cycloaddition rof chalcone and 2-hydrazinobenzothiazole. The reaction carried out in aqueous-ethanol medium at reflux condition and product obtained in high yield.
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