OXONE AND IODOBENZENE ARE USEFUL REACTION SYSTEM FOR SYNTHESIS OF 2-AMINOTHIAZOLE DERIVATIVES FROM EASILY AVAILABLE THIOUREA AND ALKYL / ARYL KETONES

A quick one step, innovative approach for the Synthesis of 2-aminothiazole derivatives from easily available thiourea and alkyl / aryl ketones with the help of Oxone and Iodobenzene reaction system has been developed in aqueous acetonitrile solution. The developed procedure is applicable to several types of substituted 2-aminothiazole derivatives to get the corresponding products. The developed methodology offers mild reaction condition, short reaction time, and moderate to admirable yields. This is one of the most simple and environmentally benign protocols for synthesis of 2-aminothiazole derivatives. When reaction carried out in presence of oxone and Iodobenzene in aq. Acetonitrile solvent system there is formation of active Hypervalent iodine reagent in situ and that reagent is responsible for this conversion but, yield of reaction is less. We go in detailed in Hypervalent reagent study and got some literature in that researcher used catalytic KBr along with oxone and Iodobenzene and there is amplify in activity of Hypervalent iodine reagent because of catalytic amount of potassium bromide. So we decided to use catalytic amount of KBr along with oxone and Iodobenzene reagent and there is increase in yield of desirable product.