反应详情

温度

60 °C

N-Hydroxy-4-[(2-methoxyethyl)amino]-1,2,5-oxadiazole-3-carboximidoyl chloride (46.0 g, 0.208 mol) was mixed with water (300 mL). The mixture was heated to 60° C. 3-Bromo-4-fluoroaniline [Oakwood products, product #013091] (43.6 g, 0.229 mol) was added and stirred for 10 min. A warm sodium bicarbonate (26.3 g, 0.313 mol) solution (300 mL water) was added over 15 min. The reaction was stirred at 60° C. for 20 min. LCMS indicated reaction completion. The reaction solution was cooled to room temperature and extracted with ethyl acetate (2×300 mL). The combined ethyl acetate solution was dried over sodium sulfate and concentrated to give the desired product (76.7 g, 98%) as a crude brown solid.

1. stirringThe reaction was stirred at 60° C. for 20 min
2. customreaction completion
3. temperatureThe reaction solution was cooled to room temperature
4. extractionextracted with ethyl acetate (2×300 mL)
5. dry with materialThe combined ethyl acetate solution was dried over sodium sulfate
6. concentrationconcentrated