4-Methylmorpholine → 2-Amino-4-methoxybenzamide

Beteiligte Stoffe

Reaktionsschritte

To a stirred solution of 2-amino-4-methoxy-benzoic acid (3.00 g, 17.9 mmol) in THF (90 mL), EDCl (7.89 g, 41.1 mmol) and HOBt (7.95 g, 51.9 mmol) were added and stirred at room temperature for 30 minutes. Then, N-methylmorpholine (6.15 g, 60.0 mmol) and aqueous 50% (v/v) NH4OH (12 mL, 171.4 mmol) were added. The mixture was stirred for 16 hours at room temperature. The solvent was removed under reduced pressure and the residue was extracted with ethyl acetate (4×100 mL). The combined organic phase was washed with water, then brine, and dried over anhydrous sodium sulfate. Solvent was evaporated to give 2-amino-4-methoxy-benzamide as an off-white solid. Yield: 1.80 g, (60%).

Herkunft & Nachweise