反应详情

The crude product of the ketal 7e (29.6 g, 97 mmole) was dissolved in water (44 ml), concentrated hydrochloric acid (64 ml) was added, and the mixture was stirred for 20 hours at RT. The reaction mixture was shaken with diethyl ether (2×100 ml), the aqueous phase was made alkaline with 5N NaOH while cooling with ice, and was extracted with dichloromethane (3×100 ml), dried, and concentrated by evaporation. The ketone was isolated as a colorless oil.

1. temperaturewhile cooling with ice
2. extractionwas extracted with dichloromethane (3×100 ml)
3. customdried
4. concentrationconcentrated by evaporation