2-Benzoylamino-N-phenyl-benzamide derivatives (5a–h) were prepared from 2-phenyl-3,1-(4H)-benzoxazin-4-one 3 and substituted anilines 4a–h in the presence of a Keggin-type heteropolyacids series (H3PW12O40·13H2O; H4SiW12O40·13H2O; H4SiMo12O40·13H2O; and H3PMo12O40·13H2O) as catalysts without solvent and under microwave irradiation. We found that the use of H3PW12O40·13H2O acid coupled to microwave irradiation allowed obtaining a high-yielding reaction with a short time. The compound structures were established by1H-NMR and13C-NMR. The antibacterial and antifungal activities of the synthesized compounds exhibited an inhibition of the growth of bacteria and fungi.
Ighilahriz-Boubchir, K., Boutemeur-Kheddis, B., Rabia, C., Makhloufi-Chebli, M., Hamdi, M., & Silva, A. M. S. (2018). Recyclable keggin heteropolyacids as an environmentally benign catalyst for the synthesis of new 2-benzoylamino-n-phenyl-benzamide derivatives under microwave irradiations at solvent-free conditions and the evaluation of biological activity. Molecules, 23(1). https://doi.org/10.3390/molecules23010008