反应详情

温度

80 °C

A 50-mL single-neck round-bottomed flask equipped with a magnetic stirrer and a reflux condenser was charged with 4-chloro-2-(1-oxo-6,7,8,9-tetrahydropyrazino[1,2-a]indol-2(1H)-yl)nicotinaldehyde 103b (150 mg, 1.0 eq., 0.46 mmol), 3-(5-((2S,5R)-2,5-dimethyl-4-(oxetan-3-yl)piperazin-1-yl)pyridin-2-ylamino)-1-methyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridin-2(1H)-one 155a (228 mg, 0.46 mmol), K3PO4 (195 mg, 0.92 mmol), PdCl2(dppf) (37 mg, 0.046 mmol), sodium acetate (75 mg, 0.92 mmol), water (8 drops), and acetonitrile (20 mL). After three cycles of vacuum/argon flush, the mixture was heated at 80° C. 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 40:1 dichloromethane/ethanol to afford 160a as yellow solid (80 mg, 26%). MS-ESI: [M+H]+ 661.4.

1. customA 50-mL single-neck round-bottomed flask equipped with a magnetic stirrer and a reflux condenser
2. customAfter three cycles of vacuum/argon flush
3. temperatureIt was then cooled to room temperature
4. filtrationfiltered
5. concentrationThe filtrate was concentrated under reduced pressure
6. customthe resulting residue was purified by silica-gel column chromatography
7. washeluting with 40:1 dichloromethane/ethanol