反应详情

温度

100 °C

To a round bottom flask was added methyl 5-bromopicolinate 6-5 (900 mg, 4.2 mmol), 3-fluorophenylboronic acid 6-6 (875 mg, 6.3 mmol), Pd(PPh3)4 (482 mg, 0.42 mmol), saturated Na2CO3 (3 mL), ethanol (3 mL) and toluene (9 mL). The reaction was refluxed at 100° C. for 3 hours. The reaction was cooled down to room temperature, and the precipitate was collected by filtration and briefly washed with ethyl acetate. The sodium salt was acidified with 1N HCl to give 5-(3-fluorophenyl)picolinic acid 6-7 as a white solid. MS m/z 218.1 (M+1).

1. temperatureThe reaction was cooled down to room temperature
2. filtrationthe precipitate was collected by filtration
3. washbriefly washed with ethyl acetate