反应详情

To a mixture of 4-chloro-N-[4-(methylsulfonyl)phenyl]benzenecarboximidamide (Example 1, Step 1) (1 mmol) and sodium bicarbonate (2 mmol) in acetone (20 mL), 1-bromo-3-methoxy-2-propanone from Step 1 (1.5 mmol) is added. After heating to reflux for 24 hours, the reaction mixture is filtered, washed with acetone and concentrated in vacuo. The crude product is chromatographed (silica gel, toluene/ethyl acetate) to give 2-(4-chlorophenyl)-4-hydroxy-4-[methoxy)methyl]-1-[4-(methylsulfonyl)phenyl]-4,5-dihydro-1H-imidazole.

1. additionis added
2. temperatureAfter heating
3. temperatureto reflux for 24 hours
4. filtrationthe reaction mixture is filtered
5. washwashed with acetone
6. concentrationconcentrated in vacuo
7. customThe crude product is chromatographed (silica gel, toluene/ethyl acetate)