反应详情

A mixture of 4-(5-methyl-3-phenyl-4-isoxazolyl)benzenesulfonamide (3.14 g, 0.01 mol) and potassium carbonate (5.53 g, 0.04 mol) in DMF (50 mL) was stirred at room temperature for 5 hours. 4-methylbenzylchloride (3.45 g, 0.022 mol) was then added and the resulting mixture was stirred overnight. Ethyl acetate (50 mL) and sat. water (100 mL) were then added and the layers were separated. The organic layer was washed with NaHCO3 (50 mL), brine, 1 N HCl (25 mL) and water (2×25 mL). Then the organic layer was then dried over MgSO4, filtered and concentrated under vacuum. The resulting product was crystallized from boiling ethanol to afford 5.2 g of the product as a white solid: mp, 133.8-135.2° C.

1. stirringthe resulting mixture was stirred overnight
2. customthe layers were separated
3. washThe organic layer was washed with NaHCO3 (50 mL), brine, 1 N HCl (25 mL) and water (2×25 mL)
4. dry with materialThen the organic layer was then dried over MgSO4
5. filtrationfiltered
6. concentrationconcentrated under vacuum
7. customThe resulting product was crystallized