反应详情

温度

95 °C

To a stirred solution of 2-ethyl-4-iodo-2-methy-5-{4-(methylsulfonyl)phenyl}-3(2H)-furanone (200 mg) in 15 ml toluene and 5 ml ethanol, were added 34 mg of tetrakis(triphenylphosphine)palladium(0), 5 ml of 2M aqueous sodium carbonate solution and 120 mg of 4-acetylbenzeneboronic acid. Then the reaction solution was stirred at 95° C. for 12 hours. The reaction solvent was evaporated off under reduced pressure and the resulting residue was extracted with 50 ml water and dichloromethane (30 ml×3). Then the organic layer was concentrated in vacuo and the resulting crude product was purified by column chromatography (hexane/ethylacetate) to afford 120 mg of 4-(4-acetylphenyl)-2-ethyl-2-methyl-5-{4-(methylsulfonyl)phenyl}-3(2H)-furanone as a solid. mp: 147-148° C. NMR: δ0.97 (t, J=7.5 Hz, 3H), 1.56 (s, 3H), 1.99 (m, 2H), 2.62 (s, 3H), 3.08 (s, 3H), 7.39 (d, J=8.7 Hz, 2H), 7.83 (d, J=8.7 Hz, 2H), 7.97 (m, 2H). IR (cm−1): 2929, 1684, 1410, 1317, 1149, 1016, 769, 552.

1. customThe reaction solvent was evaporated off under reduced pressure
2. extractionthe resulting residue was extracted with 50 ml water and dichloromethane (30 ml×3)
3. concentrationThen the organic layer was concentrated in vacuo
4. customthe resulting crude product was purified by column chromatography (hexane/ethylacetate)