反应详情

To a suspension of 10% palladium-charcoal (50% wet with water) (500 mg) in ethanol (10 ml) was added a solution of (4R)-4-methyl-4-[2-(1-ethylpyrrol-2-yl)ethenyl]-1,3-oxazolidin-2-one (5.7 g, 25.9 mmol) obtained in Reference example 22 in ethanol (50 ml), and the resulting mixture was stirred at room temperature under a hydrogen atmosphere for 1 hour. After stirring, the palladium-charcoal in the reaction mixture was filtered off using celite, and the filtrate was evaporated in vacuo. The residue obtained was purified by chromatography on a silica gel column using a mixed solvent of hexane and ethyl acetate (3:7) as the eluent to afford the title compound (5.0 g, yield: 87%).

1. stirringAfter stirring
2. filtrationthe palladium-charcoal in the reaction mixture was filtered off
3. customthe filtrate was evaporated in vacuo
4. customThe residue obtained
5. customwas purified by chromatography on a silica gel column