反应详情

2-(4-{5-[1,1,1,3,3,3-Hexafluoro-2-(4-methoxybenzyloxy)propan-2-yl]-4-propylpyridin-2-yl}piperazin-1-yl)ethanol (20 mg, 0.0373 mmol), 5-methyl-5-(4-(1-methylethoxy)phenyl)imidazolidine-2,4-dione (34.3 mg, 0.138 mmol) and triphenylphosphine (34.5 mg, 0.132 mmol) were dried with a vacuum pump, dissolved in N,N-dimethylformamide (3 mL), added DEAD (51 μL, 0.111 mmol) under ice-cold conditions, and the mixture was stirred at room temperature for 1 hour. Under ice-cold conditions, the reaction solution was added water (1.0 mL) and 2N aqueous solution of hydrochloric acid (1.0 mL), extracted with ethyl acetate. The organic layer was washed with brine, dried over anhydrous sodium sulfate, and concentrated in vacuo. The obtained residue was purified by silica-gel column chromatography (hexane/acetone). The title compound (30 mg (yield 99%)) was obtained as a yellow oil.

1. extractionextracted with ethyl acetate
2. washThe organic layer was washed with brine
3. dry with materialdried over anhydrous sodium sulfate
4. concentrationconcentrated in vacuo
5. customThe obtained residue was purified by silica-gel column chromatography (hexane/acetone)