Pyridine → 1-(4-Chloro-2-hydroxy-5-methylphenyl)ethanone

참여 물질

반응 단계

3-Chloro-4-methylphenol (1.00 g) was dissolved in dichloromethane (10 ml) to prepare a solution. Pyridine (747 mg) and acetyl chloride (656 mg) were added to the solution, and the mixture was stirred at room temperature overnight. The solvent was removed by distillation under the reduced pressure, water was then added to the residue, and the mixture was extracted with chloroform. The chloroform layer was washed with water and was dried over anhydrous magnesium sulfate, and the solvent was then removed by distillation under the reduced pressure. The residue was dried under the reduced pressure. Scandium trifluoromethanesulfonate (414 mg) was added to the compound thus obtained, and the mixture was suspended in toluene (5 ml) to prepare a suspension which was then heated under reflux overnight. The reaction solution was cooled to room temperature, and the reaction solution was then filtered. The solvent was removed from the filtrate by distillation under the reduced pressure, water was then added to the residue, and the mixture was extracted with ethyl acetate. The ethyl acetate layer was then washed with water and saturated brine and was dried over anhydrous sodium sulfate. The solvent was removed by distillation under the reduced pressure, and the residue was purified by column chromatography using acetone-hexane to give 1-(4-chloro-2-hydroxy-5-methyl-phenyl)-ethanone (193 mg, yield 15%).

출처 및 근거