反应详情

温度

160 °C

To a microwave vial containing bicyclo[3.2.1]octane-2,4-dione (0.112 g, 0.812 mmol), palladium (II) acetate (7.6 mg, 0.034 mmol), 2-dicyclohexylphosphino-2′,4′,6′-tri-iso-propyl-1,1′-biphenyl (24.2 mg, 0.051 mmol), and finely ground potassium phosphate (0.316 g, 1.49 mmol) is added degassed dimethoxyethane (2 ml), then 3-bromo-4′-chloro-4-ethylbiphenyl (0.200 g, 0.667 mmol). This reaction mixture is then heated at 160° C. under microwave irradiation for 60 minutes, then cooled to room temperature and washed with 2M hydrochloric acid (2 ml) and extracted with ethyl acetate (3×3 ml). The organic phase is dried over magnesium sulfate, filtered, and the filtrate concentrated in vacuo. The crude mixture is purified by flash column chromatography on silica gel (30% to 100% ethyl acetate/hexane eluant ratio) to afford 3-(4′-chloro-4-ethylbiphen-3-yl)bicyclo[3.2.1]octane-2,4-dione.

1. additionis added
2. customdegassed dimethoxyethane (2 ml)
3. temperaturecooled to room temperature
4. washwashed with 2M hydrochloric acid (2 ml)
5. extractionextracted with ethyl acetate (3×3 ml)
6. dry with materialThe organic phase is dried over magnesium sulfate
7. filtrationfiltered
8. concentrationthe filtrate concentrated in vacuo
9. customThe crude mixture is purified by flash column chromatography on silica gel (30% to 100% ethyl acetate/hexane eluant ratio)