反应详情

温度

80 °C

3-Chloro-6-(trifluoromethyl)pyridazine (137 mg, 0.751 mmol), 2-methoxy-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine (176 mg, 0.749 mmol), K2CO3 (310 mg, 2.25 mmol) and PdCl2(dppf) (61 mg, 0.075 mmol) were stirred in DMSO (4 mL). The reaction mixture was degassed, then back-filled with N2. The reaction mixture was stirred at 80° C. in a pre-heated oil bath for 2 hours. After cooling, the reaction was quenched with water and extracted with CH2Cl2. The organic layer was washed with H2O and 5% LiCl solution, dried with Na2SO4, filtered and concentrated. Flash chromatography (silica gel, hexanes/EtOAc), 100:0 to 50:50) afforded the title compound (115 mg, 60%) as a white solid: 1H NMR (500 MHz, CDCl3) δ 8.39 (d, J=5.8 Hz, 1H), 8.05 (d, J=8.8 Hz, 1H), 7.94 (d, J=8.8 Hz, 1H), 7.62 (dd, J=5.4, 1.5 Hz, 1H), 7.45 (s, 1H), 4.03 (s, 3H).

1. customThe reaction mixture was degassed
2. additionback-filled with N2
3. temperatureAfter cooling
4. customthe reaction was quenched with water
5. extractionextracted with CH2Cl2
6. washThe organic layer was washed with H2O and 5% LiCl solution
7. dry with materialdried with Na2SO4
8. filtrationfiltered
9. concentrationconcentrated