反应详情

温度

80 °C

To a solution of (S)-3-(3-bromopyrazolo[1,5-a]pyrimidin-5-yl)-4-(5-fluoropyridin-2-yl)oxazolidin-2-one (0.500 g, 1.32 mmol) in dioxane (8 mL) purged continuously with nitrogen gas was added 3-fluoro-4-formylphenylboronic acid (0.333 g, 1.98 mmol) and 2.0 M sodium carbonate aqueous solution (1.98 mL, 3.97 mmol). To the reaction was added Pd2 dba3 (0.242 g, 0.264 mmol) and X-Phos (0.126 g, 0.264 mmol) and the reaction stirred at 80° C. for 1 hour. After cooling, the reaction was partitioned between EtOAc and water. The aqueous layer was extracted with EtOAc. The combined organic layers were washed with water and brine, dried, and concentrated under vacuum. The residue was purified by preparative TLC (50% EtOAc/hexane) to give (S)-2-fluoro-4-(5-(4-(5-fluoropyridin-2-yl)-2-oxooxazolidin-3-yl)pyrazolo[1,5-a]pyrimidin-3-yl)benzaldehyde (0.47 g, 84% yield) as a yellow solid.

1. temperatureAfter cooling
2. customthe reaction was partitioned between EtOAc and water
3. extractionThe aqueous layer was extracted with EtOAc
4. washThe combined organic layers were washed with water and brine
5. customdried
6. concentrationconcentrated under vacuum
7. customThe residue was purified by preparative TLC (50% EtOAc/hexane)