反应详情

4-[(4-Bromophenoxy)methyl]-2,2,4-trimethyl-1,3-dioxolane (156 mg, 0.518 mmol), 4-[4-(trifluoromethoxy)phenoxy]piperidine (135 mg, 0.517 mmol), palladium acetate (1.2 mg, 0.0053 mmol), tri-tert-butylphosphine tetraphenylborate (2.7 mg, 0.0052 mmol), sodium tert-butoxide (55 mg, 0.57 mmol), and toluene (2 mL) were mixed and stirred under reflux for 2 hours. Ethyl acetate and water were added to the reaction mixture, followed by extraction. The organic layer was washed with water twice. A residue was obtained by concentrating the organic layer under reduced pressure, and the resulting residue was then subjected to chromatography refining (methylene chloride) using silica gel, obtaining 232 mg of the objective compound (yield: 93%).

1. temperatureunder reflux for 2 hours
2. extractionfollowed by extraction
3. washThe organic layer was washed with water twice
4. customA residue was obtained
5. concentrationby concentrating the organic layer under reduced pressure