反应详情

温度

0 °C

Triethylamine (1.0 mL, 7.09 mmol) was added to a solution of 2-amino-5-bromonicotinaldehyde hydrobromide (1.0 g, 3.54 mmol) in methanol (24 mL) at room temperature. The reaction mixture was stirred for 10 minutes prior to the addition of 2-(4-methylpiperazin-1-yl)ethanamine (558 mg, 3.90 mmol). The reaction mixture was then stirred overnight and cooled to 0° C. Sodium borohydride (201 mg, 5.32 mmol) was added portionwise at 0° C. and the reaction mixture was allowed to reach room temperature and stirred for 4 hours. After concentration to dryness, the residue was purified by chromatography on silica gel using dichloromethane/methanol/ammoniac (10:0:0.1 to 9:1:0.1) as eluent. The title product was obtained as a yellow solid (560 mg, 48%).

1. stirringThe reaction mixture was then stirred overnight
2. customto reach room temperature
3. stirringstirred for 4 hours
4. concentrationAfter concentration to dryness
5. customthe residue was purified by chromatography on silica gel