反应详情

温度

100 °C

A 100-mL round-bottomed flask equipped with a reflux condenser was charged with 4-chloro-2-(4-oxo-7,8,9,10-tetrahydropyridazino[4,5-a]indolizin-3(4H)-yl)nicotinaldehyde 192c (200 mg, 0.60 mmol), 1-methyl-3-(5-methyl-4,5,6,7-tetrahydropyra-zolo[1,5-a]pyrazin-2-ylamino)-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridin-2(1H)-one 135a (230 mg, 0.60 mmol), sodium acetate (100 mg, 1.2 mmol), K3PO4 (320 mg, 1.2 mmol), PdCl2(dppf) (50 mg, 0.060 mmol), acetonitrile (25 mL), and water (1 mL). After bubbling nitrogen through the mixture for 30 minutes, it was heated at 100° C. for 3 hours under N2 protection. The reaction was cooled to room temperature and evaporated under reduced pressure. The residue was purified by silica-gel column chromatography eluting with 25:1 methylene chloride/methanol to afford 202a (205 mg, 62%) as a brown solid. MS-ESI: [M+H]+ 552.3.

1. customA 100-mL round-bottomed flask equipped with a reflux condenser
2. customAfter bubbling nitrogen through the mixture for 30 minutes
3. temperatureThe reaction was cooled to room temperature
4. customevaporated under reduced pressure
5. customThe residue was purified by silica-gel column chromatography
6. washeluting with 25:1 methylene chloride/methanol