反应详情

3-Acetylpyridine (2.4 g, 20 mmol, Aldrich) was dissolved in 2M ammonia solution in methyl alcohol (50 mL, 100 mmol, Aldrich) and acetic acid (15 mL, J. T. Baker) was slowly added at 0 C. After stirring for 3 h at room temperature, the sodium cyanoborohydride (5.0 g, 80 mmol, Aldrich) was added to the solution at 0 C. The mixture was stirred under nitrogen at room temperature for overnight then the reaction was cooled at ice bath and quenched with aqueous 5 N sodium hydroxide (30 mL, 150 mmol, J. T. Baker). The methyl alcohol was removed from the mixture via vacuo. The residue was extracted by diethyl ether (30 mL×4). The combined organic phases were dried over anhydrous magnesium sulfate and concentrated via vacuo to give crude 1-pyridin-3-yl-ethylamine as light yellow oil in 44% yield (1.07 g, 8.8 mmol).

1. stirringThe mixture was stirred under nitrogen at room temperature for overnight
2. temperaturethe reaction was cooled at ice bath
3. customThe methyl alcohol was removed from the mixture via vacuo
4. extractionThe residue was extracted by diethyl ether (30 mL×4)
5. dry with materialThe combined organic phases were dried over anhydrous magnesium sulfate
6. concentrationconcentrated via vacuo