反应详情

温度

90 °C

A mixture of 1-methyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole (0.30 g, 1.44 mmol), 5-(5-((2-chloropyridin-4-yl)oxy)-6-methylpyridin-2-yl)-4-methoxy-2-(methylthio)pyrimidine (0.49 g, 1.31 mmol), and K2CO3 (0.54 g, 3.92 mmol) in 5:1 dioxane/water (18 mL) was sparged with Ar, treated with Pd(PPh3)4 (0.15 g, 0.13 mmol), sparged again with Ar and heated at 90° C. for 4 h. The mixture was cooled to RT, treated with satd. NaHCO3, extracted with EtOAc (3×) and the combined organics were dried over Na2SO4, concentrated to dryness and purified via silica gel chromatography (MeOH/DCM) to obtain 4-methoxy-5-(6-methyl-5-((2-(1-methyl-1H-pyrazol-4-yl)pyridin-4-yl)oxy)pyridin-2-yl)-2-(methylthio)pyrimidine (0.54 g, 98%). 1H NMR (400 MHz, DMSO-d6): δ 8.93 (s, 1H), 8.39 (d, J=5.7 Hz, 1H), 8.28 (s, 1H), 7.99 (d, J=0.7 Hz, 1H), 7.88 (d, J=8.5 Hz, 1H), 7.65 (d, J=8.6 Hz, 1H), 7.30 (d, J=2.4 Hz, 1H), 6.66 (dd, J=5.7, 2.4 Hz, 1H), 4.06 (s, 3H), 3.85 (s, 3H), 2.58 (s, 3H), 2.42 (s, 3H); MS (ESI) m/z: 421.1 (M+H+).

1. customwas sparged with Ar
2. customsparged again with Ar
3. temperatureThe mixture was cooled to RT
4. additiontreated with satd
5. extractionNaHCO3, extracted with EtOAc (3×)
6. dry with materialthe combined organics were dried over Na2SO4
7. concentrationconcentrated to dryness
8. custompurified via silica gel chromatography (MeOH/DCM)