反应详情

温度

100 °C

A solution of 4-(2-chloropyridin-4-yloxy)-2-fluorobenzenamine (3 g, 12.6 mmol), 1-methyl-3-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)-1H-pyrazole (5.2 g, 25.2 mmol), and Na2CO3 (2.7 g, 25.2 mmol) in DME (18 mL) and water (6 mL) was sparged with nitrogen for 20 min. Pd(PPh3)4 (729 mg, 0.63 mmol) was added and the resulting mixture was heated to 100° C. for 16 h. The solvent was removed under reduced pressure and the crude product was suspended in water and extracted with EtOAc. The organic layer was washed with brine, dried (NaSO4), filtered, concentrated in vacuo and purified via silica gel chromatography to give 2-fluoro-4-(2-(1-methyl-1H-pyrazol-4-yl)pyridin-4-yloxy)benzenamine (2 g, 56% yield). 1H NMR (300 MHz, DMSO-d6): δ 8.31 (d, J=5.7 Hz, 1 H), 8.21 (s, 1 H), 7.92 (s, 1 H), 7.12 (d, J=2.4 Hz, 1 H), 6.96 (m, 1 H), 6.85-6.72 (m, 2 H), 6.56 (m, 1 H), 5.15 (s, 2 H), 3.84 (s, 3H); MS (ESI) m/z: 285.0 (M+H+).

1. customThe solvent was removed under reduced pressure
2. extractionextracted with EtOAc
3. washThe organic layer was washed with brine
4. dry with materialdried (NaSO4)
5. filtrationfiltered
6. concentrationconcentrated in vacuo
7. custompurified via silica gel chromatography