反应详情

Potassium hydroxide (4.36, 76 mmol, 1.3 eq.) is suspended in 40 ml of anhydrous DMSO, to the suspension is added a solution 2-phenyl-4-(4-methoxyphenyl)imidazole (15.02, 60 mmol) and bromobutane (8.63 g, 63 mmol, 1.05 eq.) in 80 ml of DMSO at room temperature over 2 h, the resulting mixture is stirred over 24 h, and then poured into 400 ml of ice-water, extracted with ethyl acetate (100 ml×4), washed with water and brine, dried over anhydrous sodium sulfate. The solvent is evaporated and the product is purified through flash chromatography to give 16.73 g of 4-({[3-Butyl-5-(4-methoxy-phenyl)-2-phenyl-3H-imidazole. MS (+VE) m/z 307 (M+1).

1. extractionextracted with ethyl acetate (100 ml×4)
2. washwashed with water and brine
3. dry with materialdried over anhydrous sodium sulfate
4. customThe solvent is evaporated
5. customthe product is purified through flash chromatography