反应详情

温度

120 °C

2-Chloro-4-(difluoromethyl)pyrimidine (24.8 mg, 0.12 mmol) and acetic acid (0.0074 mL, 0.130 mmol) were added to an oven-dried flask containing (2S)-3-[4-(3-amino-5-methylphenyl)-1H-pyrazol-1-yl]-2-hydroxypropanamide (46.2 mg, 0.12 mmol) dissolved in dioxane (0.41 mL). The mixture was stirred for 3 hours at 120° C. The mixture was then cooled to room temperature, diluted with water, and extracted with EtOAc (3×). The combined organic layers were dried over sodium sulfate, filtered, and concentrated under reduced pressure. The residue was purified by column chromatography on silica gel (2 to 100% EtOAc/hexanes) to afford (2S)-3-[4-(3-{[4-(difluoromethyl)pyrimidin-2-yl]amino}-5-methylphenyl)-1H-pyrazol-1-yl]-2-hydroxypropanamide. MS ESI calcd. for C18H19F2N6O2 [M+H]+ 389. found 389. 1H NMR (500 MHz, DMSO-d6) δ 9.88 (s, 1H), 8.68 (d, J=4.9 Hz, 1H), 7.96 (s, 1H), 7.82 (s, 1H), 7.76 (s, 1H), 7.37 (s, 1H), 7.34 (s, 1H), 7.32 (s, 1H), 7.04 (d, J=4.9 Hz, 1H), 7.01 (s, 1H), 6.87 (t, J=54.4 Hz, 1H), 5.86 (d, J=5.9 Hz, 1H), 4.41-4.33 (m, 1H), 4.24-4.18 (m, 1H), 4.17-4.13 (m, 1H), 2.28 (s, 3H).

1. temperatureThe mixture was then cooled to room temperature
2. extractionextracted with EtOAc (3×)
3. dry with materialThe combined organic layers were dried over sodium sulfate
4. filtrationfiltered
5. concentrationconcentrated under reduced pressure
6. customThe residue was purified by column chromatography on silica gel (2 to 100% EtOAc/hexanes)