反应详情

温度

60 °C

5.0 g (26.0 mmol) of 4-benzoylbutyric acid was dissolved in 100 ml of 1,2-dichloroethane, and 8.70 g (65.03 mmol) of aluminum trichloride and 5.30 (31.21 mmol) of 1-chloroadamantane were added thereto, followed by stirring the mixture at 60° C. for 6 hours. The reaction mixture was poured into hydrochloric acid, and extracted with chloroform. The organic layer was dried over anhydrous magnesium sulfate, and the solvent was then distilled off under reduced pressure. To the residue were added 100 ml of methanol and 5 ml of conc. sulfuric acid, and the mixture was stirred at room temperature overnight. The solvent was distilled off under reduced pressure, and the residue was poured into water, and extracted with chloroform. The organic layer was dried over anhydrous magnesium sulfate, and the solvent was then distilled off under reduced pressure. The resulting residue was purified by silica-gel column chromatography (eluent: a mixture of 1% ethyl acetate and hexane) to obtain 2.13 g of the above-mentioned compound (yield 24%).

1. extractionextracted with chloroform
2. dry with materialThe organic layer was dried over anhydrous magnesium sulfate
3. distillationthe solvent was then distilled off under reduced pressure
4. additionTo the residue were added 100 ml of methanol and 5 ml of conc. sulfuric acid
5. stirringthe mixture was stirred at room temperature overnight
6. distillationThe solvent was distilled off under reduced pressure
7. additionthe residue was poured into water
8. extractionextracted with chloroform
9. dry with materialThe organic layer was dried over anhydrous magnesium sulfate
10. distillationthe solvent was then distilled off under reduced pressure
11. customThe resulting residue was purified by silica-gel column chromatography (eluent
12. additiona mixture of 1% ethyl acetate and hexane)