反应详情

温度

100 °C

A mixture of 2-chloro-4-ethenylpyrimidine (400 mg, 2.85 mmol), Intermediate 15 (815 mg, 3.13 mmol), Pd(OAc)2 (70.3 mg, 0.313 mmol), Xantphos (247 mg, 0.427 mmol) and cesium carbonate (1.85 g, 5.69 mmol) in 1,4-dioxane (14 mL) was purged with nitrogen for 8 min, and heated to 100° C. overnight. The mixture was cooled to room temperature, diluted with water, and extracted with EtOAc (×3). The combined organics were washed with brine, dried (sodium sulfate), concentrated, and purified by flash chromatography to afford 1-(5-{3-[(4-ethenylpyrimidin-2-yl)amino]-5-methylphenyl}-1,3-thiazol-2-yl)cyclobutanol (330 mg, 0.905 mmol). MS ESI: [M+H]+ m/z 365.1. 1H NMR (500 MHz, DMSO-d6) δ 9.65 (s, 1H), 8.49 (d, J=4.9, 1H), 8.01 (s, 1H), 7.97 (s, 1H), 7.53 (s, 1H), 7.07 (s, 1H), 6.94 (d, J=5.1, 1H), 6.71 (dd, J=10.5, 17.4, 1H), 6.51 (s, 1H), 6.49 (d, J=16.1, 1H), 5.70 (d, J=10.5, 1H), 2.56-1.85 (m, 6H), 2.31 (s, 3H). rhSYK activity=+++

1. customwas purged with nitrogen for 8 min
2. temperatureThe mixture was cooled to room temperature
3. additiondiluted with water
4. extractionextracted with EtOAc (×3)
5. washThe combined organics were washed with brine
6. dry with materialdried (sodium sulfate)
7. concentrationconcentrated
8. custompurified by flash chromatography