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    STUDIA CHEMIA - Issue no. 2, Tom II / 2019  
         
  Article:   SYNTHESIS AND ANTIOXIDANT CAPACITY OF (CHLOROBENZYLIDENE)HYDRAZINYL-THIAZOLES.

Authors:  ADRIANA GROZAV, DANIELA HANGANU, OVIDIU CRISAN, DAN PORUMB, CASTELIA CRISTEA. 		 
       
         
  Abstract:  2-(chlorobenzilidene)hydrazinyl-thiazole derivatives were conveniently prepared by Hantzsch reaction protocol, starting with thiosemicarbazone and ethyl 2-bromo-3-oxo-3-phenylpropanoate. Their antioxidant capacity was screened by electron transfer based assays. The results of both DPPH (1,1-Diphenyl-2-picrylhydrazyl) free radical scavenging, as well as Ferric Ion Reducing Antioxidant Power (FRAP) assay, indicated antioxidant capacity for the tested hydrazone derivatives. At the concentration of 9.5 µg/mL, the DPPH radical scavenging activity of ethyl 2-(2-(3-chlorobenzylidene)hydrazinyl)-4-phenylthiazole-5-carboxylate was found to be more than 93%.

Keywords: synthesis, thiazoles, antioxidant capacity, DPPH, FRAP 		 
         
     
         
         
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