反应详情

To a solution of benzaldehyde (0.1 mL, 1 mmol) and N-[(1S)-1-(3-aminophenyl)ethyl]-6-chloropyrazin-2-amine (248 mg, 1 mmol) in dichloroethane (5 mL) was added sodium triacetoxyborohydride (300 mg, 1.4 mmol) in one portion and the mixture was stirred at room temperature for 16 hours. After this time a solution of saturated aqueous sodium hydrogen carbonate (20 mL) was added and the mixture was stirred for 10 minutes. The mixture was extracted with ethyl acetate (2×20 mL) and the extracts washed with brine (20 mL), dried (Na2SO4) and concentrated under reduced pressure to give N-{(1S)-1-[3-(benzylamino)phenyl]ethyl}-6-chloropyrazin-2-amine (330 mg, 97%) as an off white solid of reasonable purity.

1. stirringthe mixture was stirred for 10 minutes
2. extractionThe mixture was extracted with ethyl acetate (2×20 mL)
3. washthe extracts washed with brine (20 mL)
4. dry with materialdried (Na2SO4)
5. concentrationconcentrated under reduced pressure