反应详情

To a mixture of 3-{[4-(4-methylpiperazin-1-yl)phenyl]amino}-5-(3-nitrophenoxy)-6-(prop-1-en-2-yl)pyrazine-2-carboxamide (1.13 g), ethanol (60 mL), and tetrahydrofuran (30 mL) was added 10% palladium-supported carbon (53% wet product) (1.23 g), followed by stirring for 6 hours under a hydrogen gas atmosphere (4 atm). The reaction mixture was filtered through celite and then the solvent was evaporated under reduced pressure. The obtained residue was purified by silica gel column chromatography (eluent; chloroform:methanol:28% aqueous ammonia=100:1:0.1-30:1:0.1) to obtain 5-(3-aminophenoxy)-6-isopropyl-3-{[4-(4-methylpiperazin-1-yl)phenyl]amino}pyrazine-2-carboxamide (702 mg) as a yellow solid.

1. filtrationThe reaction mixture was filtered through celite
2. customthe solvent was evaporated under reduced pressure
3. customThe obtained residue was purified by silica gel column chromatography (eluent; chloroform:methanol:28% aqueous ammonia=100:1:0.1-30:1:0.1)