反应详情

温度

25 °C

A mixture of 3-methyl-4-phenoxybenzoic acid (114 mg, 0.5 mmol), o-(7-azabenzotriazol-1-yl)-N,N,N′,N′-tetramethyluroniumhexafluorophosphate (285 mg, 0.75 mmol), triethylamine (0.2 mL) and dichloromethane (15 mL) were stirred at 25° C. for half an hour. Then 3-(aminomethyl)-4,6-dimethylpyridin-2-ol (76 mg, 0.5 mmol) was added. The mixture was stirred at 25° C. for 12 hours. The mixture was washed with water (30 mL). The organic phase was separated, dried over sodium, filtered, concentrated to give a residue. The residue was purified by column chromatography (silica gel, dichloromethane/methanol=10:1) to give N-((2-hydroxy-4,6-dimethylpyridin-3-yl)methyl)-3-methyl-4-phenoxybenzamide as a white solid (50 mg, 28%). LRMS (M+H+) m/z: calcd 362.16. found 362. HPLC purity (214 nm): 95%. 1H NMR (300 MHz, d6-DMSO): δ 11.47 (s, 1H), 8.24 (t, J=4.8 Hz, 1H), 8.83 (s, 1H), 7.68 (dd, J=9.6 Hz, J=2.1 Hz, 1H), 7.41-7.35 (m, 2H), 7.13 (t, J=7.5 Hz, 1H), 6.96-6.93 (m, 2H), 6.82 (d, J=8.4 Hz, 1H), 5.80 (s, 1H), 4.29 (d, J=4.8 Hz, 2H), 2.21 (s, 3H), 2.16 (s, 3H), 2.11 (s, 3H).

1. stirringThe mixture was stirred at 25° C. for 12 hours
2. washThe mixture was washed with water (30 mL)
3. customThe organic phase was separated
4. dry with materialdried over sodium
5. filtrationfiltered
6. concentrationconcentrated
7. customto give a residue
8. customThe residue was purified by column chromatography (silica gel, dichloromethane/methanol=10:1)