FC(F)(F)C(O)=O.[C:8]([NH:16][C:17]1[CH:29]=[C:28]([C:30]2[CH:35]=[CH:34][C:33]([N+:36]([O-:38])=[O:37])=[CH:32][CH:31]=2)[CH:27]=[CH:26][C:18]=1[C:19]([O:21]C(C)(C)C)=[O:20])(=[O:15])[C:9]1[CH:14]=[CH:13][CH:12]=[CH:11][CH:10]=1>>[C:8]([NH:16][C:17]1[CH:29]=[C:28]([C:30]2[CH:35]=[CH:34][C:33]([N+:36]([O-:38])=[O:37])=[CH:32][CH:31]=2)[CH:27]=[CH:26][C:18]=1[C:19]([OH:21])=[O:20])(=[O:15])[C:9]1[CH:10]=[CH:11][CH:12]=[CH:13][CH:14]=13.0 mL of trifluoroacetic acid solution containing 40 mg of tert-butyl 2-(benzamido)-4-(4-nitrophenyl)benzoate was stirred at room temperature for 1 hour. The solvent was evaporated under reduced pressure and ethyl acetate and methanol were added to she obtained residue and a solid substance was separated by filtration to obtain 15 mg of 2-(benzamido)-4-(4-nitrophenyl)benzoic acid as white solid.
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