反应详情

Ethyl 3-[(1E)-4-methoxybut-1-en-1-yl]imidazo[1,2-a]pyridine-2-carboxylate (1.40 g) was dissolved in ethyl acetate (30 ml), 10% palladium carbon (50% in water) (510 mg) was added and the mixture was stirred in a hydrogen stream at ambient temperature and normal pressure for 12 hr. The catalyst was filtered off, and the filtrate was concentrated under reduced pressure. The residue was subjected to silica gel column chromatography, and a fraction eluted with ethyl acetate-methanol (5:1) was concentrated under reduced pressure to give the object product (1.14 g).

1. filtrationThe catalyst was filtered off
2. concentrationthe filtrate was concentrated under reduced pressure
3. washa fraction eluted with ethyl acetate-methanol (5:1)
4. concentrationwas concentrated under reduced pressure