反应详情

To a mixed solution of (4-nitrophenyl)[2-(1-propyl)imidazolyl]methanol (4.5 g) in methanol (150 ml) and ethanol (100 ml), 10% palladium carbon (450 mg) was added, and the mixture was stirred for 4 hours under hydrogen atmosphere. The insolubles were filtered off, and the residue was purified by basic silica gel column chromatography (methanol-ethyl acetate=1:8) and recrystallized from ethyl acetate-diisopropyl ether, to give (4-aminophenyl)[2-(1-propyl)imidazolyl]methanol (3.52 g) as brown crystals.

1. filtrationThe insolubles were filtered off
2. customthe residue was purified by basic silica gel column chromatography (methanol-ethyl acetate=1:8)
3. customrecrystallized from ethyl acetate-diisopropyl ether