反应详情

温度

100 °C

To a sealed tube were added 5-bromo-2-iodopyrimidine 183-1 (114 mg, 0.4 mmol), 2-methyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine 183-2 (88 mg, 0.4 mmol), Pd(PPh3)4 (23 mg, 0.02 mmol), Na2CO3 (170 mg, 1.6 mmol), toluene (0.4 mL), H2O (0.4 mL) and ethanol (0.1 mL). The reaction mixture was stirred at 100° C. for 10 hours. After cooling to room temperature, the solvents were evaporated and the residue was redissolved in water (3 ml) and extracted with ethyl acetate (5 mL×3). The combined organic phases were dried over Na2SO4 and concentrated. The residue was purified by silica gel flash chromatography and eluted with 20% ethyl acetate in hexane to give 5-bromo-2-(2-methylpyridin-4-yl)pyrimidine 183-3. MS m/z 250.0 (M+1).

1. temperatureAfter cooling to room temperature
2. customthe solvents were evaporated
3. dissolutionthe residue was redissolved in water (3 ml)
4. extractionextracted with ethyl acetate (5 mL×3)
5. dry with materialThe combined organic phases were dried over Na2SO4
6. concentrationconcentrated
7. customThe residue was purified by silica gel flash chromatography
8. washeluted with 20% ethyl acetate in hexane