反应详情

A 25-mL single-neck round-bottomed flask equipped with a magnetic stirrer and a reflux condenser was charged with 5-bromo-3-(5-((2S,5R)-2,5-dimethyl-4-(oxetan-3-yl)piperazin-1-yl)pyridin-2-ylamino)-1-methylpyridin-2(1H)-one 104e (179 mg, 0.40 mmol), (4-fluoro-2-{6-oxo-8-thia-4,5-diazatricyclo[7.4.0.02,7]trideca-1(9),2(7),3-trien-5-yl}-6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)methyl acetate 117d (200 mg, 0.40 mmol), Pd(dppf)Cl2 (29 mg, 0.04 mmol), K3PO4 (170 mg, 0.8 mmol), sodium acetate (66 mg, 0.8 mmol), acetonitrile (5 mL), water (1.0 mL). After three cycles of vacuum/argon flush, the mixture was heated at reflux for 2 h. It was then cooled to room temperature and filtered. The filtrate was concentrated under reduced pressure and the resulting residue was purified by silica-gel column chromatography eluting with 30:1 dichloromethane/methanol to afford 118a as yellow solid (100 mg, 34%). MS: [M+H]+ 740.3

1. customA 25-mL single-neck round-bottomed flask equipped with a magnetic stirrer and a reflux condenser
2. customAfter three cycles of vacuum/argon flush
3. temperaturethe mixture was heated
4. temperatureat reflux for 2 h
5. filtrationfiltered
6. concentrationThe filtrate was concentrated under reduced pressure
7. customthe resulting residue was purified by silica-gel column chromatography
8. washeluting with 30:1 dichloromethane/methanol