反应详情

A solution of 4-(5-benzyloxy-2-fluoro-4-methylphenoxy)-6-methoxy-7-(2-methoxyethoxy)cinnoline (242 mg, 0.5 mmol) in a mixture of methanol (9 ml) and DMF (10.5 ml) containing 10% palladium-on-charcoal catalyst (100 mg) was stirred under hydrogen at 5 atmospheres pressure for 9 hours. The catalyst was removed by filtration and the solvent was evaporated. The residue was washed with methanol and ether and dried under vacuum to give 4-(2-fluoro-5-hydroxy-4-methylphenoxy)-6-methoxy-7-(2-methoxyethoxy)cinnoline as a white solid (87 mg, 44%).

1. customThe catalyst was removed by filtration
2. customthe solvent was evaporated
3. washThe residue was washed with methanol and ether
4. customdried under vacuum