反应详情

温度

80 °C

A solution of Example A3 (3.83 g, 13.79 mmol) in dioxane (50 mL) was sparged with argon, treated with a solution of K2CO3 (3.81 g, 27.6 mmol) in H2O (10 mL), 1-methyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole (3.44 g, 16.55 mmol) and Pd(PPh3)4 (0.637 g, 0.552 mmol) and heated at 80° C. for 16 h. The mixture was cooled to RT, treated with H2O, extracted with EtOAc (2×) and the combined organics washed with H2O, then brine, dried over Na2SO4 and concentrated to dryness. The material was suspended in 3:2 EtOAc/Hex, sonicated and the resulting solid collected via filtration and dried. The filtrate was concentrated to dryness, purified via silica gel chromatography (MeOH/DCM) and combined with the isolated solid to afford N-(6-methyl-5-((2-(1-methyl-1H-pyrazol-4-yl)pyridin-4-yl)oxy)pyridin-2-yl)acetamide (3.88 g, 87%) as a white solid. 1H NMR (400 MHz, DMSO-d6): δ 10.60 (s, 1 H), 8.34 (d, J=5.7 Hz, 1 H), 8.25 (s, 1 H), 8.01 (d, J=8.8 Hz, 1 H), 7.95 (s, 1 H), 7.57 (d, J=8.8 Hz, 1 H), 7.17 (d, J=2.4 Hz, 1 H), 6.58 (dd, J=5.7, 2.4 Hz, 1 H), 3.84 (s, 3 H), 2.25 (s, 3 H), 2.08 (s, 3 H); MS (ESI) m/z: 324.1 (M+H+).

1. temperatureThe mixture was cooled to RT
2. extractionextracted with EtOAc (2×)
3. washthe combined organics washed with H2O
4. dry with materialbrine, dried over Na2SO4
5. concentrationconcentrated to dryness
6. customsonicated
7. filtrationthe resulting solid collected via filtration
8. customdried
9. concentrationThe filtrate was concentrated to dryness
10. custompurified via silica gel chromatography (MeOH/DCM)