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A convenient solvent less cyclocondensation from thiosenucarbazone of benzofuranone and chloroacetic acid using an ionic liquid,iV-methylpyridinium tosylate for obtaining novel 4-thiazolidinones in excellent yields is reported.Also,the green expedient synthesis of new 2,4-disubstituted thiazoles under grinding condition from phenacyl bromides and thiosemicarbazide derivatives in quantitative yields is reported.
A convenient solvent less cyclocondensation from thiosenucarbazone of benzofuranone and chloroacetic acid using an ionic liquid, iV-methylpyridinium tosylate for obtaining novel 4-thiazolidinones in excellent yields is reported. Also, the green expedient synthesis of new 2,4-disubstituted thiazoles under grinding condition from phenacyl bromides and thiosemicarbazide derivatives in quantitative yields is reported.