反应详情

A solution of 2-[6-carboxybenzothiazol-2(3H)-ylidene]-2-(4-trifluoromethylpyrimidin-2-yl)-acetonitrile (620 mg, 1.70 mmol) in concentrated sulfuric acid (5 mL), was heated to 50° C. for 10 hr. The mixture was cooled to room temperature and added dropwise to rapidly stirred room-temperature water (100 mL). The precipitate that formed was collected by filtration, washed with water and hexanes, and dried under vacuum to give 2-[6-carboxybenzothiazol-2(3H)-ylidene]-2-(4-trifluoromethylpyrimidin-2-yl)acetamide (587 mg, 90% yield) as a brown solid.

1. customThe precipitate that formed
2. filtrationwas collected by filtration
3. washwashed with water and hexanes
4. customdried under vacuum