反应详情

温度

45 °C

To a mixture of 3.6 g of an iron powder, 10 ml of acetic acid and 1 ml of water was added a solution of 3.67 g of N-[2-fluoro-5-{2-(methoxycarbonyl)methoxy-3-pyridyloxy}-4-nitrophenyl]acetamide in 12 ml of acetic acid and 2 ml of ethyl acetate, dropwise while maintaining the temperature of the reaction solution at 45° C. or lower. After completion of the addition, the mixture was stirred for 1 hour at 40° C., then, the reaction mixture was filtrated through Celite, and concentrated. The residue was diluted with saturated aqueous sodium bicarbonate solution, and extracted with ethyl acetate. The organic layer was washed with saturated aqueous sodium bicarbonate solution, dried over anhydrous magnesium sulfate, and concentrated. Then, the resulted residue was washed with diisopropyl ether to obtain 3.09 g of N-[4-amino-2-fluoro-5-{2-(methoxycarbonyl)methoxy-3-pyridyl oxy}phenyl]acetamide.

1. additionAfter completion of the addition
2. filtrationthe reaction mixture was filtrated through Celite
3. concentrationconcentrated
4. additionThe residue was diluted with saturated aqueous sodium bicarbonate solution
5. extractionextracted with ethyl acetate
6. washThe organic layer was washed with saturated aqueous sodium bicarbonate solution
7. dry with materialdried over anhydrous magnesium sulfate
8. concentrationconcentrated
9. washThen, the resulted residue was washed with diisopropyl ether