Convenient synthesis of some new thiazolidin-4-one, chromen-2-imine and pyrrol-2-one derivatives containing thiophene moiety

Document Type : Original Article

Authors

1 Chemistry Department, Faculty of Science, Mansoura University

2 Chemistry Department, Faculty of Science, Mansoura University, El-Gomhoria Street, ET-35516 Mansoura, Egypt

Abstract

In the present study, 2-amino-4-methyl-5-(pyridin-2-ylcarbamoyl)thiophene-3-ethylcarboxylate (2) has been achieved using Gewald’s methodology between 3-oxo-N-(pyridin-2-yl)butanamide (1), ethyl 2-cyanoacetate and elemental sulfur in refluxing ethyl alcohol containing a catalytic amount of morpholine. This 2-aminothiophene derivative was served as key synthon for the synthesis of new thiazolidin-4-one, chromen-2-imine and pyrrol-2-one derivatives via its reactions with the convenient chemical reagents. The mechanistic aspects for the achievement of the new thiophene derivatives were also discussed

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