反应详情

To a solution of 2-chloro-4-isopropylbenzoic acid (100 mg, 0.50 mmol) in dichloromethane (50 mL) were added 2-(7-Aza-1H-benzotriazole-1-yl)-1,1,3,3-tetramethyluronium hexafluorophosphate (190 mg, 0.50 mmol) and triethylamine (175 mg, 1.73 mmol). The resultant reaction mixture was stirred at room temperature for 30 minutes. Then 3-(aminomethyl)-4,6-dimethylpyridin-2-ol (152 mg, 1.0 mmol) was added and the mixture was stirred at ambient temperature overnight. The mixture was washed with brine (50 mL), dried over sodium sulfate, filtered, and concentrated. The residue was purified through pre-HPLC and the obtained solution was freeze-dried to afford 2-chloro-N-((2-hydroxy-4,6-dimethylpyridin-3-yl)methyl)-4-isopropylbenzamide (40 mg, 23.9%) as a white solid. LRMS (M+H+) m/z: calcd 333.13. found 333. HPLC purity (214 nm): 96.2% 1H NMR (300 MHz, DMSO) δ 7.37 (d, J=7.8 Hz, 1H), 7.30 (d, J=1.5 Hz, 1H), 7.23 (dd, J1=7.8 Hz, J2=1.5 Hz, 1H), 6.11 (s, 1H), 4.49 (s, 2H), 2.93 (m, 1H), 2.38 (s, 3H), 2.25 (s, 3H), 1.25 (d, J=6.9 Hz, 6H).

1. customThe resultant reaction mixture
2. stirringthe mixture was stirred at ambient temperature overnight
3. washThe mixture was washed with brine (50 mL)
4. dry with materialdried over sodium sulfate
5. filtrationfiltered
6. concentrationconcentrated
7. customThe residue was purified through pre-HPLC and the obtained solution
8. customwas freeze-dried