Reaktion #7589

Reaktionsgleichung

4-(5-benzyloxy-2-fluoro-4-methylphenoxy)-6-methoxy-7-(2-methoxyethoxy)cinnoline

→

4-(2-fluoro-5-hydroxy-4-methylphenoxy)-6-methoxy-7-(2-methoxyethoxy)cinnoline

Ausbeute 46.5%

Lösungsmittel

methanol

DMF

Reaktionsbedingungen

Aufarbeitung

1. 1
   SonstigeThe catalyst was removed by filtration
2. 2
   Sonstigethe solvent was evaporated
3. 3
   WaschenThe residue was washed with methanol and ether
4. 4
   Sonstigedried under vacuum

Vorschrift

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%).

Quelle