反应详情

0.82 g (10.5 mmol) of acetyl chloride is added dropwise to a stirred solution of 2.54 g (10.0 mmol) of 2-acetyl-3-hydroxy-5-(tetrahydro-2H-thiopyran-3-yl)-cyclohex-2-en-1-one and 1.06 g (10.5 mmol) of triethylamine in 50 ml of dichloromethane. The mixture is stirred overnight at room temperature, and then is poured into 100 ml of ice-cold water. The organic layer is separated and washed with 20 ml of dilute sodium bicarbonate solution, followed by 50 ml of saturated sodium chloride solution. The washed extract is then dried over anhydrous magnesium sulfate and concentrated under reduced pressure. The product can be purified by column chromatography employing tetrahydrofuran-hexane (1:2 by volume) as eluent to afford the title compound.

1. customThe organic layer is separated
2. washwashed with 20 ml of dilute sodium bicarbonate solution
3. extractionThe washed extract
4. dry with materialis then dried over anhydrous magnesium sulfate
5. concentrationconcentrated under reduced pressure
6. customThe product can be purified by column chromatography