反应详情

温度

90 °C

In a microwave vessel, 6-(3-ethylureido)-4-(4-(1-methyl-1H-pyrazol-4-yl)thiazol-2-yl)pyridin-3-ylboronic acid (Intermediate 98, 0.2 g, 0.54 mmol), ethyl 6-bromo-1-((1-methyl-1H-imidazol-4-yl)methyl)-4-oxo-1,4-dihydro-1,7-naphthyridine-3-carboxylate (Intermediate 102, 0.21 g, 0.54 mmol) and cesium carbonate (0.229 g, 0.70 mmol) were combined and suspended in a mixture of dioxane and water (5:1; 2.5 mL/0.5 mL). The suspension was degassed and purged with nitrogen. Pd(PPh3)4 (0.05 g, 0.04 mmol) was added and the mixture was degassed and purged a second time. The reaction mixture was heated in the microwave at 90° C. for 90 minutes. The reaction was partitioned between water and ethyl acetate, the layers were separated, and the organic phase was washed with saturated NaHCO3, water and brine, then dried over magnesium sulfate, and concentrated. The resulting solids were filtered, washed with acetonitrile followed by chloroform. Isolation gave 90 mg of the title compound as an off-white solid.

1. customThe suspension was degassed
2. custompurged with nitrogen
3. customthe mixture was degassed
4. custompurged a second time
5. customThe reaction was partitioned between water and ethyl acetate
6. customthe layers were separated
7. washthe organic phase was washed with saturated NaHCO3, water and brine
8. dry with materialdried over magnesium sulfate
9. concentrationconcentrated
10. filtrationThe resulting solids were filtered
11. washwashed with acetonitrile