Abstract The title compounds, 2′, 4′-difluoro-4-[(4-methylbenzoyl) oxy]-N-[4-nitro-3- (trifluoromethyl) phenyl]-[1, 1′-biphenyl]-3-carboxamide 2a and 2′, 4′-difluoro-4-[(4- chlorobenzoyl) oxy]-N-[4-nitro-3-(trifluoromethyl) phenyl]-[1, 1′-biphenyl]-3-carboxamide 2b, synthesized from diflunisal, a registered anti-inflammatory drug, via amidation of carboxlic acid and esterification of phenolic hydroxy group and recrystallized from ...
![2',4'-difluoro-4-hydroxy-[1,1'-biphenyl]-3-carbonyl chloride Structure](https://image.chemsrc.com/caspic/164/344348-56-7.png)
![5-(2,4-difluorophenyl)-2-hydroxy-N-[4-nitro-3-(trifluoromethyl)phenyl]benzamide Structure](https://image.chemsrc.com/caspic/111/1058742-35-0.png)
