반응 #214418

반응 방정식

1-bromo-4-chloro-3,3-dimethyl-butan-2-one

4-chlorophenol

potassium carbonate

→

4-chloro-1-(4-chlorophenoxy)-3,3-dimethyl-butan-2-one

수율 80.7%

용매

acetone

반응 조건

후처리

1. 1
   온도under reflux
2. 2
   온도to cool
3. 3
   여과the inorganic residue was filtered off
4. 4
   세척rinsed with acetone
5. 5
   농축The filtrate was concentrated
6. 6
   workup.DISTILLATIONby distilling off the solvent in vacuo
7. 7
   세척washed three times with 250 ml of water at a time
8. 8
   건조dried over sodium sulphate
9. 9
   workup.DISTILLATIONdistilled

실험 절차

213 g (1 mol) of 1-bromo-4-chloro-3,3-dimethyl-butan-2-one were added dropwise to a boiling suspension of 128.5 g (1 mol) of 4-chlorophenol and 140 g (1 mol) of potassium carbonate in 1,000 ml of absolute acetone. The mixture was stirred for 15 hours under reflux and was then allowed to cool, and the inorganic residue was filtered off and rinsed with acetone. The filtrate was concentrated by distilling off the solvent in vacuo and the residue was taken up in 1,000 ml of methylene chloride, washed three times with 250 ml of water at a time, dried over sodium sulphate and distilled. 210 g (80.7% of theory) of 4-chloro-1-(4-chlorophenoxy)-3,3-dimethyl-butan-2-one of boiling point 125°-127° C./0.1 mm Hg were obtained.

출처