反应详情

温度

100 °C

A solution of 6-chloro-9-(tetrahydro-2H-pyran-2-yl)-9H-purine (6.00 g, 25.1 mmol) in dioxane (54 mL) was sequentially treated with water (7.2 mL), 2-fluoropyridin-3-ylboronic acid (5.31 g, 37.7 mmol), sodium carbonate monohydrate (9.35 g, 75.4 mmol) and PdCl2(dppf) (0.616 g, 0.754 mmol). The stirred mixture was degassed (alternating vacuum/nitrogen) and heated under nitrogen at 100° C. for 10 h. The mixture was cooled and extracted into EtOAc (500 mL) from water (400 mL). The aqueous layer was extracted with EtOAc (200 mL) and the combined organic extracts were dried (MgSO4), filtered through celite, and concentrated. The crude product was dissolved in a small volume of DCM and purified by flash chromatography (50%→75%→100% EtOAc/hexane) to give 6-(2-fluoropyridin-3-yl)-9-(tetrahydro-2H-pyran-2-yl)-9H-purine (3.96 g, 53% yield) as an off-white solid. MS (ESI, pos. ion) m/z: 300.1 [M+H]+

1. customThe stirred mixture was degassed (alternating vacuum/nitrogen)
2. temperatureThe mixture was cooled
3. extractionextracted into EtOAc (500 mL) from water (400 mL)
4. extractionThe aqueous layer was extracted with EtOAc (200 mL)
5. dry with materialthe combined organic extracts were dried (MgSO4)
6. filtrationfiltered through celite
7. concentrationconcentrated
8. dissolutionThe crude product was dissolved in a small volume of DCM
9. custompurified by flash chromatography (50%→75%→100% EtOAc/hexane)