反应详情

温度

95 °C

To a solution of 2-chloro-5-phenyl-N-(pyridin-2-ylmethyl)quinazolin-4-amine (from example 1, step 4, 0.12 g, 0.5 mmol) in 1,4-dioxane (8 mL) and H2O (0.55 mL) under nitrogen was added 2-(5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridin-3-yl)propanenitrile (0.120 g, 0.4 mmol) and potassium carbonate (0.14 g, 1 mmol). The resulting mixture was degassed with nitrogen for 15 min. After this time, (1,1′-bis(diphenylphosphino)ferrocene)palladium (II) chloride dichloromethane complex (0.26 mg, 0.036 mmol) was added and the reaction mixture was again degassed with nitrogen for 10 min. At the conclusion of this period, the reaction mixture was stirred at 95° C. for 16 h. The reaction mixture was then allowed to cool to room temperature. Once at the prescribed temperature, the reaction mixture was quenched by the addition of water and then transferred to a separation funnel. The aqueous layer was extracted with ethyl acetate. The combined organic portions were washed with water and saturated NaCl, dried over Na2SO4, filtered and concentrated under reduced pressure. The resulting concentrate was purified by silica gel column chromatography using 1% methanol in DCM to afford racemic 2-(5-(5-phenyl-4-(pyridin-2-ylmethylamino)quinazolin-2-yl)pyridin-3-yl)propanenitrile (95 mg, 63% yield) as an off white solid. 1H NMR (400 MHz, DMSO-d6) δ (ppm): 9.60 (s, 1H), 8.80 (d, 1H, J=2 Hz); 8.77 (s, 1H); 8.26 (d, 1H, J=6 Hz); 7.92 (dd, 1H, J=1.2, 6.8 Hz); 7.85 (t, 1H, J=6.8 Hz); 7.73 (dt, 1H, J=1.6, 7.6 Hz); 7.58-7.52 (m, 5H); 7.34-7.32 (m, 2H); 7.24 (t, 1H, 7.2 Hz); 6.86 (t, 1H, J=4 Hz); 4.76 (d, 2H, J=4.4 Hz); 4.59 (q, 1H, J=7.2 Hz); 1.68 (d, 3H, 7.2 Hz). LCMS Method Y: retention time 1.68 min, [M+1]=443.2.

1. customThe resulting mixture was degassed with nitrogen for 15 min
2. additionAfter this time, (1,1′-bis(diphenylphosphino)ferrocene)palladium (II) chloride dichloromethane complex (0.26 mg, 0.036 mmol) was added
3. customthe reaction mixture was again degassed with nitrogen for 10 min
4. temperatureto cool to room temperature
5. customOnce at the prescribed temperature, the reaction mixture was quenched by the addition of water
6. customtransferred to a separation funnel
7. extractionThe aqueous layer was extracted with ethyl acetate
8. washThe combined organic portions were washed with water and saturated NaCl
9. dry with materialdried over Na2SO4
10. filtrationfiltered
11. concentrationconcentrated under reduced pressure
12. concentrationThe resulting concentrate
13. customwas purified by silica gel column chromatography