反应详情

A solution of palladium acetate (260 mg, 1.16 mmol) and triphenylphosphine (1.21 g, 4.63 mmol) was stirred for 10 minutes at ambient temperature and then the product of Example 319A (11.1 g, 38.6 mmol), 2-methylphenylboronic acid (5.77 g, 42.4 mmol), ethanol (18 mL) and aqueous 2M sodium carbonate (157 mL) were added. The reaction mixture was warmed to reflux and stirred for 18 hours. The reaction mixture was cooled to ambient temperature and diluted with ether. The aqueous phase was extracted with ether. The combined organic layers were washed with water, dried, filtered and concentrated in vacuo to give an orange oil. Chromatography on silica gel (25% ethyl acetate-hexanes) gave the desired compound (9.6 g, 83%) as a yellow solid.

1. temperatureThe reaction mixture was warmed
2. temperatureto reflux
3. extractionThe aqueous phase was extracted with ether
4. washThe combined organic layers were washed with water
5. customdried
6. filtrationfiltered
7. concentrationconcentrated in vacuo
8. customto give an orange oil