反应详情

N-Chlorosuccinimide (84 mg) was added to a solution of 6-(4-hydroxy-3-trifluoromethyl-phenyl)-1-methyl-1H-imidazo[4,5-c]pyridine-4-carbonitrile (200 mg) in DMF (4 ml). The mixture was stirred at room temperature for 24 hours, then ethyl acetate (50 ml) and water (20 ml) were added and the organic layer was washed twice with water (2×20 ml) and brine (20 ml), then dried over sodium sulfate, filtered and concentrated under reduced pressure to afford a crude (165 mg) with 6-(3-chloro-4-hydroxy-5-trifluoromethyl-phenyl)-1-methyl-1H-imidazo[4,5-c]pyridine-4-carbonitrile which is contaminated starting material. This material was used for next step without further purification.

1. washthe organic layer was washed twice with water (2×20 ml) and brine (20 ml)
2. dry with materialdried over sodium sulfate
3. filtrationfiltered
4. concentrationconcentrated under reduced pressure