反应详情

温度

70 °C

To a mixture of 2-[3-(2-methoxy-ethoxy)-phenyl]-5-nitro-1H-pyrrolo[2,3-b]pyridine (7.1 mmol, 2.2 g) and iron powder (6.7 g) in ethanol (50 mL) was added HCl (conc) (0.7 mL) and water (5 mL). The mixture was heated at 70° C. for 3 hours then cooled and filtered through Celite®. The solvent was removed in vacuo and the residue resolvated in ethyl acetate (30 mL), washed with saturated sodium bicarbonate (15 mL), dried over MgSO4, filtered and concentrated in vacuo. The crude product was purified by column chromatography (SiO2, ethyl acetate) to afford 2-[3-(2-methoxy-ethoxy)-phenyl]-1H-pyrrolo[2,3-b]pyridin-5-ylamine (1.2 g, 60%).

1. temperaturethen cooled
2. filtrationfiltered through Celite®
3. customThe solvent was removed in vacuo
4. washwashed with saturated sodium bicarbonate (15 mL)
5. dry with materialdried over MgSO4
6. filtrationfiltered
7. concentrationconcentrated in vacuo
8. customThe crude product was purified by column chromatography (SiO2, ethyl acetate)