反应详情

温度

95 °C

To a degassed solution of 120 mg (0.323 mmol) 4-(3-bromo-1H-indazol-5-yl)-2-methyl-5-oxo-1,4,5,7-tetrahydrofuro[3,4-b]pyridine-3-carbonitrile (Example 24) and 69.8 mg (0.388 mmol) 2,3-dihydro-1,4-benzodioxin-6-ylboronic acid in anhydrous 1,4-dioxane (4.5 ml) were added under inert gas atmosphere 37.4 mg (0.032 mmol) tetrakis(triphenylphosphine)palladium(0) and aqueous sodium bicarbonate solution (2 M, 0.77 ml). The resulting mixture was stirred at 95° C. for 12 h. After cooling to room temperature and concentration under reduced pressure, the remaining solid was dissolved in ethyl acetate (20 ml). The solution was subsequently washed with water and brine, dried over sodium sulfate and concentrated under reduced pressure. The crude product was purified by preparative RP-HPLC (acetonitrile/water gradient, final mixture 95:5 v/v) to yield the title compound as a white solid (26 mg, 19% of th.).

1. temperatureAfter cooling to room temperature
2. concentrationconcentration under reduced pressure
3. dissolutionthe remaining solid was dissolved in ethyl acetate (20 ml)
4. washThe solution was subsequently washed with water and brine
5. dry with materialdried over sodium sulfate
6. concentrationconcentrated under reduced pressure
7. customThe crude product was purified by preparative RP-HPLC (acetonitrile/water gradient, final mixture 95:5 v/v)