(3-Bromophenyl)acetic acid → 2-(3-Bromophenyl)acetamide

1-Hydroxybenzotriazole (HOBT, 13.82 g, 102.3 mmol), N-ethyldiisopropyl amine (Hunig's base, 13.22 g, 102.3 mmol) and ammonium carbonate (27.0 g, 279.0 mmol) were added to a solution of (3-bromophenyl)acetic acid (20.0 g, 93.0 mmol) in freshly dried and distilled tetrahydrofuran (80 mL) under a nitrogen atmosphere. The reaction mixture was stirred at room temperature for about 5 minutes and then cooled to 0° C. and stirred at the same temperature for about 1 hour. 1-(3-Dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride (EDCLHCl, 19.61 g, 102.3 mmol) was added at 0° C. under nitrogen atmosphere. The reaction mixture was stirred at room temperature for about 12 hours. The solvent was evaporated under vacuum and water was added. A white solid was obtained which was filtered, washed with water and dried. Yield: 12.69 g.