Acetyl thiazole thiosemicarbazone 3 was used as key intermediate for preparation of novel series of thiazolylhydrazono thiazole derivatives via reaction of 3 with two types of hydrazonoyl halides.Also, compound 3 reacted with α-haloketones and α-haloester in ethanol or in acetic acid containing anhydrous sodium acetate under reflux to give another new thiazole based compounds.Addionally, the key i...