反应详情

To a solution of (E)-3-benzylidene-1-(triphenylmethyl)piperidin-4-one (3.91 g) in a mixed solvent of ethanol (30 ml) and dichloromethane (30 ml) was added sodium borohydride (0.34 g) under ice-cooling, and the resulting mixture was stirred at room temperature for 2 hours. After stirring, saturated aqueous ammonium chloride solution was added to the reaction mixture, and the resulting mixture was extracted with ethyl acetate. The extract was washed with saturated aqueous sodium chloride solution and dried over anhydrous sodium sulfate. The solvent was removed in vacuo, and the residue was purified by chromatography on a silica gel column using a mixed solvent of ethyl acetate and hexane (3:7) as the eluent to afford the title compound (2.61 g, yield: 66%) as a colourless amorphous solid.

1. temperaturecooling
2. stirringAfter stirring
3. extractionthe resulting mixture was extracted with ethyl acetate
4. washThe extract was washed with saturated aqueous sodium chloride solution
5. dry with materialdried over anhydrous sodium sulfate
6. customThe solvent was removed in vacuo
7. customthe residue was purified by chromatography on a silica gel column