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Objective: The aim of the present study is to synthesize 2,4-disubstituted oxazoles through palladium/copper comediated direct arylation reaction.Methods: 2,4-disubstituted oxazoles (3a-i) have been synthesized by the reaction of 4-substituted oxazole with aryl bromide in the presence of KOH , CuI and Pd(PPh3)4 in dimethoxyethane. Titled compounds (3a-i) were obtained in good yields using an expedient two-step synthesis of 2,4-disubstituted oxazoles from commercially available starting materials Results:The structures of the newly synthesized compounds were characterized by Fourier-transform infrared, 1H NMR, 13C NMR, and mass spectral studies. This method can be an efficient method for the synthesis of 2,4-disubstituted oxazoles (3a-i). Conclusion:Pd(PPh3)4 and CuI cocatalytic system direct arylation of 4-aryl/alkyl oxazoles with various aryl bromides has been developed to generate 2,4-disubstituted oxazoles. The high functional group tolerance and the speed of the reaction afford this method appropriate for the combinatorial synthesis of a variety of 2,4-disubstituted oxazoles.

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Objective: The aim of the present study is to synthesize novel phenylacrylamide derivatives as potent bioactive agents.Methods: Novel N-(3-(4H-1,2,4-triazol-4-ylamino)-3-oxo-1-arylidene prop-2-yl) benzimidic acids (7a-c) have been synthesized by the reaction of 4-(arylidene)-2-phenyloxazol-5(4H)-ones (5a-c) with 4-amino-1, 2, 4-triazole (6) in the presence of anhydrous sodium acetate in glacial acetic acid. Titled compounds (7a-c) were obtained in good yields using microwave technology which resulted in dramatic reductions in reaction times leading to the formation of phenylacrylamide derivatives (7a-c) at a faster rate.Results: The structures of the newly synthesized compounds were characterized by Fourier-transform infrared, 1H NMR, 13C NMR, and mass spectral studies. This method can be an efficient method for the synthesis of phenylacrylamide derivatives (7a-c).Conclusion: All the final compounds were screened for their antimicrobial and antioxidant activities and found to be biologically active. Among all the compounds, 7b was found to be potent antimicrobial and antioxidant.