The regioselective synthesis of 2-(methylthio)-N-aryl/alkylthiazole-5-carboxamides and ethyl-5-(aryl/alkyl carbamoyl)thiazole-4-carboxylates by base induced cyclization of methyl-2-oxo-2-(amino)ethanedithioates with TosMIC and ethylisocyanoacetate respectively in high yield. The regioisomeric product was confirmed by X-ray diffraction...
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