反应详情

A mixture of [1-(4-nitrobenzyl)-1H-imidazol-2-yl]methanol (3.6 g), 10% palladium carbon (400 mg) and ethanol (50 ml) was stirred under a hydrogen atmosphere at room temperature for 4 hrs. Palladium carbon was removed from the reaction mixture by filtration, and the filtrate was concentrated. Recrystallization of the residue from ethyl acetate-hexane gave [1-(4-aminobenzyl)-1H-imidazol-2-yl]methanol (2.53 g, 95%) as colorless prism crystals. melting point: 125° C. (decomposition)

1. customPalladium carbon was removed from the reaction mixture by filtration
2. concentrationthe filtrate was concentrated
3. customRecrystallization of the residue from ethyl acetate-hexane