反应详情

温度

25 °C

4-Phenethylbenzoic acid (30 mg, 0.13 mmol), 2-(7-aza-1H-benzotriazole-1-yl)-1,1,3,3-tetramethyluronium hexafluorophosphate (103 mg, 0.27 mmol) was dissolved in dichloromethane (20 mL), and then added triethylamine (2 mL) was added. After the mixture were stirred at 25° C. for 0.5 hour, 3-(aminomethyl)-4,6-dimethylpyridin-2-ol (20 mg, 0.13 mmol) was added. The mixture was stirred at 25° C. for 12 hours. To the mixture, water (15 ml) was added. And the mixture was extracted with dichloromethane (10 mL×3). The combined organic phase was separated, dried by sodium sulfate and then filtered. The filtrate was concentrated in vacuo. The residue was purified by column chromatography (silica gel, dichloromethane/methanol=10:1) to give N-((2-hydroxy-4,6-dimethylpyridin-3-yl)methyl)-4-phenethylbenzamide (10 mg, 21%). LRMS (M+H+) m/z: calcd 360.18. found 360. HPLC purity (214 nm): 94%. 1H NMR (300 MHz, CD3OD): δ 7.67 (d, J=8.7 Hz, 2H), 7.24-7.12 (m, 7H), 6.10 (s, 1H), 4.48 (s, 2H), 2.95-2.91 (m, 4H), 2.36 (s, 3H), 2.24 (s, 3H).

1. stirringThe mixture was stirred at 25° C. for 12 hours
2. extractionAnd the mixture was extracted with dichloromethane (10 mL×3)
3. customThe combined organic phase was separated
4. dry with materialdried by sodium sulfate
5. filtrationfiltered
6. concentrationThe filtrate was concentrated in vacuo
7. customThe residue was purified by column chromatography (silica gel, dichloromethane/methanol=10:1)