反应详情

4-(5-Chloro-2-hydroxy-pyridin-3-yloxy)-6,7-dimethoxyquinoline (39 mg) was suspended in N,N-dimethylformamide (7 ml). Cyclopentyl bromide (0.3 ml) and potassium carbonate (300 mg) were added to the suspension, and the mixture was stirred at room temperature for 2 hr. Water was added to the reaction solution, and the mixture was extracted with ethyl acetate. The organic layer was washed with an aqueous sodium hydrogencarbonate solution and water and was dried over anhydrous sodium sulfate. The solvent was removed by distillation under the reduced pressure, and the residue was purified by column chromatography using acetone-chloroform to give the title compound (29 mg, yield 62%).

1. extractionthe mixture was extracted with ethyl acetate
2. washThe organic layer was washed with an aqueous sodium hydrogencarbonate solution and water
3. dry with materialwas dried over anhydrous sodium sulfate
4. customThe solvent was removed by distillation under the reduced pressure
5. customthe residue was purified by column chromatography