反应详情

温度

80 °C

To a degassed solution of N-(5-((2-chloropyridin-4-yl)oxy)pyrazin-2-yl)acetamide (0.25 g, 0.945 mmol) in dioxane (6 mL) was added a solution of K2CO3 (0.261 g, 1.889 mmol) in water (1.5 mL), 1-methyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole (0.255 g, 1.228 mmol), and Pd(PPh3)4 (0.109 g, 0.094 mmol). The mixture was stirred at 80° C. for 3 h. The mixture was diluted with water (30 mL) and extracted with EtOAc (2×80 mL). The combined organics were washed with brine, dried (Na2SO4) and concentrated in vacuo. The crude product was purified by silica gel chromatography (MeOH/DCM) to afford N-(5-((2-(1-methyl-1H-pyrazol-4-yl)pyridin-4-yl)oxy)pyrazin-2-yl)acetamide (240 mg, 82%) product as white solid. 1H NMR (400 MHz, DMSO-d6): δ 10.86 (s, 1H), 8.97 (d, J=1.4 Hz, 1H), 8.43 (dd, J=5.6, 0.5 Hz, 1H), 8.40 (d, J=1.4 Hz, 1H), 8.27 (s, 1H), 7.98 (d, J=0.7 Hz, 1H), 7.40 (m, 1H), 6.92 (dd, J=5.6, 2.4 Hz, 1H), 3.85 (s, 3H), 2.12 (s, 3H); MS (ESI) m/z: 311.1 (M+H+).

1. extractionextracted with EtOAc (2×80 mL)
2. washThe combined organics were washed with brine
3. dry with materialdried (Na2SO4)
4. concentrationconcentrated in vacuo
5. customThe crude product was purified by silica gel chromatography (MeOH/DCM)