[Br:1][C:2]1[C:8]([O:9][CH3:10])=[C:7]([Br:11])[CH:6]=[C:5]([F:12])[C:3]=1[NH2:4].[C:13](OC(=O)C)(=[O:15])[CH3:14]>>[Br:1][C:2]1[C:8]([O:9][CH3:10])=[C:7]([Br:11])[CH:6]=[C:5]([F:12])[C:3]=1[NH:4][C:13](=[O:15])[CH3:14]Compound 8-5 (212.7 g, 0.711 mol) was added to acetic anhydride (200 mL) in one portion at 20° C. The reaction mixture was stirred for 30 minutes and then was filtered to get 8-6 (192 g, 79.2%) as a white solid.
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