反应详情

温度

5 °C

To a solution of potassium tert-butoxide (0.6 g, 5.36 mmol) in 10 ml of anhydrous THF was added 2-cyanoacetamide (0.45 g, 5.36 mmol) under argon. The mixture was cooled to 5° C. and added dropwise to a solution of 4-(2,5-dichloro-phenoxy)-3-fluoro-phenylisothiocyanate (1.53 g, 4.87 mmol) in 5 ml of dry THF with stirring under argon. After 15 min of stirring at 5° C., this reaction mixture was warmed to room temperature and stirred for another 2 h. The reaction mixture was poured into 200 ml of ice water with stirring and acidified with 10% HCl. The solid was filtered and washed with water. After drying in vacuo, the crude product (1.6 g, 82.5%) was obtained in sufficient purity for the next step.

1. stirringAfter 15 min of stirring at 5° C.
2. temperaturethis reaction mixture was warmed to room temperature
3. stirringstirred for another 2 h
4. stirringwith stirring
5. filtrationThe solid was filtered
6. washwashed with water
7. customAfter drying in vacuo