反应详情

温度

100 °C

A 100-mL single-neck round-bottomed flask equipped with a magnetic stirrer and a reflux condenser was charged with 1,4-dioxane (50 mL), 161b (568 mg, 1.86 mmol), 3,5-dibromo-1-methylpyridin-2(1H)-one (498 mg, 1.86 mmol), Pd2(dba)3 (85 mg, 0.093 mmol), XantPhos (107 mg, 0.186 mmol), and cesium carbonate (1.198 g, 3.72 mmol). After three cycles of vacuum/argon flush, the mixture was heated at 100° C. for 6 h. It was then filtered and the filtrate was evaporated under reduced pressure. The residue was purified by silica-gel column chromatography eluting with 100:1 dichloromethane/methanol to afford 161c (502 mg, 55%) as a yellow solid. MS: [M+H]+ 492.

1. customA 100-mL single-neck round-bottomed flask equipped with a magnetic stirrer and a reflux condenser
2. customAfter three cycles of vacuum/argon flush
3. filtrationIt was then filtered
4. customthe filtrate was evaporated under reduced pressure
5. customThe residue was purified by silica-gel column chromatography
6. washeluting with 100:1 dichloromethane/methanol