反应详情

A mixture of 37.6 g (0.25 mole) of 4'-hydroxypropiophenone (97%)*, 78.7 g (0.5 mole) of 1-bromo-3-chloropropane and 103.5 g (0.75 mole) of anhydrous potassium carbonate in 1 liter of acetone was heated at reflux for 18 hr. The mixture was cooled, filtered, and the filtrate concentrated under reduced pressure. The oily residue was dissolved in 500 ml of benzene and the solution stirred with potassium hydroxide pellets for 1.5 hr to remove unreacted phenol. The mixture was filtered and the filtrate was concentrated to give 56.1 g (99% yield) of title compound as an oil. The oil gradually crystallized and a portion of the solid was recrystallized from petroleum ether (60°-110° C.) to yield title compound as a fluffy, white solid, mp 41°-43° C.

1. temperaturewas heated
2. temperatureat reflux for 18 hr
3. temperatureThe mixture was cooled
4. filtrationfiltered
5. concentrationthe filtrate concentrated under reduced pressure
6. dissolutionThe oily residue was dissolved in 500 ml of benzene
7. customto remove unreacted phenol
8. filtrationThe mixture was filtered
9. concentrationthe filtrate was concentrated