[NH3:1].Br[CH2:3][C:4]1[CH:5]=[C:6]([CH:10]=[CH:11][C:12]=1[N+:13]([O-:15])=[O:14])[C:7]([OH:9])=[O:8]>C(O)C>[NH2:1][CH2:3][C:4]1[CH:5]=[C:6]([CH:10]=[CH:11][C:12]=1[N+:13]([O-:15])=[O:14])[C:7]([OH:9])=[O:8]An aqueous solution of 25% w/v ammonia (100 mL) was treated with EtOH (200 mL) and cooled to −78° C. The mixture was slowly treated with a cooled (−78° C.) solution of the benzylbromide (2.58 g, 10.0 mmol) in ethanol (100 mL). The mixture was then allowed to come to room temperature and stirred for 48 h. The mixtures were evaporated under reduced pressure and the residue solid was washed with CH2Cl2 to afford 3-(aminomethyl)-4-nitrobenzoic acid (1.7 g, 87% yield).
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