反应详情

温度

80 °C

In a 100 mL 3-neck RBF, N-(2-(benzyloxy)-5-nitrophenyl)-2-chloro-5-fluoropyrimidin-4-amine (0.205 g), 4-(2-methoxyethoxy)aniline (0.137 g), Cs2CO3 (0.266 g) and Xantphos (0.032 g) were taken in degassed 1,4-dioxane (8.0 mL) and reaction mixture was degassed under argon for 30 minutes. Palladium acetate (0.013 g) was added to reaction mixture and again it was degassed for 30 minutes. The reaction mixture was heated to 80° C. and stirred for 3.5 h. The reaction was monitored on TLC using hexane:ethyl acetate: (5:5) as mobile phase. After completion, the reaction mixture was allowed to cool at room temperature. The reaction mixture was poured into water and product was extracted with ethyl acetate (3×25 mL). The ethyl acetate layer washed with brine solution, dried over sodium sulfate and concentrated under reduced pressure. Crude material was purified by triturating with diethyl ether to give 0.1 g of N4-(2-(benzyloxy)-5-nitrophenyl)-5-fluoro-N2-(4-(2-methoxyethoxy)phenyl)pyrimidine-2,4-diamine. 1H NMR: CDCl3 (400 MHz): 3.47 (d, 3H, J=11.6), 3.77 (dd, 2H, J=4.8, 8.8), 4.15 (t, 2H, J=4.8), 5.28 (s, 2H), 6.96 (d, 1H, J=8.8), 7.03 (d, 1H, J=8.8), 7.08 (d, 1H, J=9.2), 7.45 (m, 7H), 7.83 (s, 1H), 7.9 (d, 2H, J=2.8), 8.02 (dd, 1H, J=2.1, 6.8), 9.18 (s, 1H).

1. customreaction mixture
2. customwas degassed under argon for 30 minutes
3. additionPalladium acetate (0.013 g) was added to reaction mixture and again it
4. customwas degassed for 30 minutes
5. temperatureto cool at room temperature
6. additionThe reaction mixture was poured into water and product
7. extractionwas extracted with ethyl acetate (3×25 mL)
8. washThe ethyl acetate layer washed with brine solution
9. dry with materialdried over sodium sulfate
10. concentrationconcentrated under reduced pressure
11. customCrude material was purified
12. customby triturating with diethyl ether