反应详情

Tetralds(triphenylphosphine)palladium(0) (167 mg, 0.14 mmol) was added to a stirred solution of phenylboronic acid (423 mg, 3.47 mmol), 2,5-dichloro-isonicotinonitrile (550 mg, 2.89 mmol) and sodium carbonate (3.5 mL of 2M aqueous solution) in dimethoxyethane (7 mL) and ethanol (3.5 mL). The resulting suspension was stirred at reflux for 3 hours, concentrated in vacuo and water (25 mL) added. The aqueous solution was extracted with ethyl acetate (×3) and the combined organic extracts were washed with brine, dried and concentrated. Purification by column chromatography using 2% v/v ethyl acetate in hexane as eluent afforded the title compound as a solid.

1. temperatureat reflux for 3 hours
2. concentrationconcentrated in vacuo and water (25 mL)
3. additionadded
4. extractionThe aqueous solution was extracted with ethyl acetate (×3)
5. washthe combined organic extracts were washed with brine
6. customdried
7. concentrationconcentrated
8. customPurification by column chromatography