Microwave-assisted synthesis, structural elucidation and biological assessment of 2-(2-acetamidophenyl)-2-oxo-N phenyl acetamide and N-(2-(2-oxo-2(phenylamino)acetyl)phenyl)propionamide derivatives

Add time:08/14/2019    Source:sciencedirect.com

A facile solid-state synthesis of 2-(2-acetamidophenyl)-2-oxo-N phenyl acetamide and N-(2-(2-oxo-2(phenylamino)acetyl)phenyl)propionamide six derivatives has been achieved by microwave promoted condensation of N-acylisatin or N-propionylisatin with various aniline derivatives. The six products were characterized by IR and NMR (H1 and C13). Only two of them, The N-[2-(4-Bromo-phenylaminooxalyl)-phenyl]-propionamide and 2-(2-Acetylamino-phenyl)-2-oxo-N-p-tolyl-acetamide molecular structures were verified by X-ray single-crystal diffraction. The Br⋯Br intermolecular interaction in the crystal structure of N-[2-(4-Bromo-phenylaminooxalyl)-phenyl]-propionamide was evaluated by DFT/B3LYP calculation. The antimicrobial activity was evaluated against eight bacterial strains and two fungal species. The N-[2-(4-Bromo-phenylaminooxalyl)-phenyl]-propionamide and 2-(2-Acetylamino-phenyl)-2-oxo-N-p-tolyl-acetamide exhibit selective high inhibitory effects against Aspergillus niger and Staphylococcus aureus, respectively.

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