反应详情

To the solution of 4-(1-ethoxyethyl)benzoic acid (162 mg, 0.9 mmol) in dichloromethane (80 mL) was added o-(7-Azabenzotriazol-1-yl)-N,N,N′,N′-tetramethyluronium hexafluorophosphate (513 mg, 1.35 mmol) and triethylamine (273 mg, 2.7 mmol). then the 3-(aminomethyl)-4,6-dimethyl pyridine-2-ol (137 mg, 0.9 mmol) was added, the solution was stirred at room temperature, water (80 mL) 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 N-((2-hydroxy-4,6-dimethylpyridin-3-yl)methyl)-4-(1-methoxyethyl)benzamide (66 mg, 23%). LRMS (M+H+) m/z: calcd: 314.16. found 314; 1H-NMR (300 MHz, CD3OD)1H-NMR (300 MHz, CD3OD) δ 1.379 (d, 3H), 2.241 (s, 3H), 2.368 (s, 3H), 3.207 (s, 3H), 4.368-4.389 (m, 1H), 4.497 (s, 2H), 6.110 (s, 1H), 7.377 (d, J=8.4 Hz, 2H), 7.779 (d, J=8.4 Hz, 2H).

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