反应详情

温度

95 °C

A solution of Example A9 (0.25 g, 1.128 mmol) and pyrimidinyl-5-boronic acid (0.196 g, 1.579 mmol) in dioxane (8 mL) was treated with a solution of K2CO3 (0.156 g, 1.128 mmol) in water (2 mL), Pd(PPh3)4 (0.130 g, 0.113 mmol) and heated at 95° C. for 20 h. The mixture was cooled to RT, treated with water and extracted with EtOAc (2×). The combined organics were washed with brine, dried over Na2SO4, concentrated to dryness and purified via silica gel chromatography (MeOH/DCM) to afford 5-((2-(pyrimidin-5-yl)pyridin-4-yl)oxy)pyridin-2-amine (65 mg, 22%) as a white solid. 1H NMR (400 MHz, DMSO-d6): δ 9.39 (s, 2H), 9.24 (s, 1H), 8.55 (d, J=5.7 Hz, 1H), 7.84 (d, J=3.0 Hz, 1H), 7.75 (d, J=2.4 Hz, 1H), 7.32 (dd, J=8.9, 3.0 Hz, 1H), 6.83 (dd, J=5.7, 2.4 Hz, 1H), 6.53 (d, J=8.9 Hz, 1H), 6.04 (s, 2H); MS (ESI) m/z: 266.1 (M+H+).

1. temperatureThe mixture was cooled to RT
2. extractionextracted with EtOAc (2×)
3. washThe combined organics were washed with brine
4. dry with materialdried over Na2SO4
5. concentrationconcentrated to dryness
6. custompurified via silica gel chromatography (MeOH/DCM)