反应详情

5-((R)-2-Azido-1-hyroxyethyl)-8-benzyloxy-1H-quinolin-2-one (16.8 g, 49.9 mol) was suspended in acetic acid (50 mL), a catalytic amount of palladium hydroxide-carbon was added thereto, and the solution was stirred under a hydrogen atmosphere overnight. The catalyst was removed by filtration and the filtrate was concentrated under reduced pressure. To the residue were added methanol (100 mL) and ethyl acetate (100 mL), and the mixture was stirred. The precipitate was collected by filtration and dried to obtain 5-((R)-2-amino-1-hyroxyethyl)-8-hydroxy-1H-quinolin-2-one acetate (12.5 g).

1. customThe catalyst was removed by filtration
2. concentrationthe filtrate was concentrated under reduced pressure
3. additionTo the residue were added methanol (100 mL) and ethyl acetate (100 mL)
4. stirringthe mixture was stirred
5. filtrationThe precipitate was collected by filtration
6. customdried