反应详情

To the solution of 4-(1-ethoxyethyl)benzoic acid (167 mg, 0.86 mmol) in dichloromethane (80 mL) was added o-(7-Azabenzotriazol-1-yl)-N,N,N′,N′-tetramethyluronium hexafluorophosphate (490 mg, 1.3 mmol) and triethylamine (260 mg, 2.6 mmol). then the 3-(aminomethyl)-4,6-dimethylpyridin-2-ol (131 mg, 0.86 mmol) was added, the solution was stirred at room temperature for 12 hours, water was added and washed 3 times, the organic layer was evaporated and purified by column chromatography (silica gel, dichloromethane/meth anol=20:1) to give 4-(1-ethoxyethyl)-N-((2-hydroxy-4,6-dimethylpyridin-3-yl)methyl)benzamide (67 mg, 24%). LRMS (M+H+) m/z: calcd: 390.19. found 390. 1H-NMR (300 MHz, CD3OD) δ 7.73 (d, J=8.4 Hz, 2H), 7.31 (d, J=8.4 Hz, 2H), 5.96 (s, 1H), 4.58 (d, 2H), 4.43-4.41 (m, 1H), 3.35-3.31 (m, 1H), 2.39 (s, 3H), 2.28 (s, 3H), 1.42-1.40 (d, J=6.6 Hz, 3H), 1.176 (m, 3H).

1. washwashed 3 times
2. customthe organic layer was evaporated
3. custompurified by column chromatography (silica gel, dichloromethane/meth anol=20:1)