反应详情

温度

80 °C

A mixture of Example C1 (0.15 g, 0.40 mmol), 1-ethyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole (0.088 g, 0.40 mmol), and K2CO3 (0.2 g, 1.44 mmol) in 4:1 dioxane/water (5 mL) was sparged with Ar, treated with Pd(PPh3)4 (0.040 g, 0.036 mmol), sparged again with Ar and heated at 80° C. overnight. The mixture was cooled to RT, treated with brine, extracted with EtOAc (2×) and the combined organics were dried over Na2SO4, concentrated to dryness and purified via silica gel chromatography (MeOH/DCM). The material was treated with Et2O, allowed to stand at RT and the resulting solid collected via filtration to afford N-(5-((2-(1-ethyl-1H-pyrazol-4-yl)pyridin-4-yl)oxy)pyridin-2-yl)-2-oxo-3-(tetrahydro-2H-pyran-4-yl)imidazolidine-1-carboxamide (137 mg, 80%). 1H NMR (400 MHz, DMSO-d6): δ 10.96 (s, 1 H), 8.37 (d, J=5.7 Hz, 1 H), 8.30 (s, 1 H), 8.23 (d, J=2.9 Hz, 1 H), 8.07 (d, J=9.0 Hz, 1 H), 7.97 (s, 1 H), 7.71 (dd, J=9.0, 2.9 Hz, 1 H), 7.24 (d, J=2.4 Hz, 1 H), 6.69 (dd, J=5.7, 2.4 Hz, 1 H), 4.13 (q, J=7.3 Hz, 2 H), 3.86 (m, 5 H), 3.40 (m, 4 H), 1.71 (m, 2 H), 1.59 (m, 2 H), 1.37 (t, J=7.3 Hz, 3 H); MS (ESI) m/z: 478.2 (M+H+).

1. customsparged again with Ar
2. temperatureThe mixture was cooled to RT
3. additiontreated with brine
4. extractionextracted with EtOAc (2×)
5. dry with materialthe combined organics were dried over Na2SO4
6. concentrationconcentrated to dryness
7. custompurified via silica gel chromatography (MeOH/DCM)
8. additionThe material was treated with Et2O
9. customto stand at RT
10. filtrationthe resulting solid collected via filtration