反应详情

A mixture of 3-[3-(6-methoxy-m-tolyl)-1,2-benzisothiazol-5-yl]-6-(trifluoromethyl)-2,4(1H,3H)-pyrimidinedione (160 g, 0.369 mol), potassium carbonate (76.6 g, 0.554 mol) and iodomethane (34.5 mL, 0.554 mol) in N,N-dimethylformamide is stirred at room temperature for 4 hours, and poured onto ice. The resultant aqueous mixture is extracted with methylene chloride. The organic extract is diluted with hexanes, washed with water, dried over anhydrous magnesium sulfate, and concentrated in vacuo to obtain the title product as an orange foam (163 g, 98.8%) which is identified by NMR spectral analyses.

1. additionpoured onto ice
2. extractionThe resultant aqueous mixture is extracted with methylene chloride
3. extractionThe organic extract
4. additionis diluted with hexanes
5. washwashed with water
6. dry with materialdried over anhydrous magnesium sulfate
7. concentrationconcentrated in vacuo