反应详情

To a solution of 5.0 g (21.07 mM) of 4-[N-(tert-butoxycarbonyl)aminomethyl]-1-phenylmethanol and 5.9 ml (42.33 mM) of triethylamine in THF (42 ml) was added 2.5 ml (32.3 mM) of methanesulfonyl chloride at 0° C. and the mixture was stirred at the prevailing temperature for one hour. The reaction was stopped by adding saturated aqueous solution of sodium hydrogen carbonate and the reaction mixture was extracted with ethyl acetate. The organic layer was washed with water and saturated aqueous solution of sodium chloride and dried over MgSO4. The solvent was then distilled off under reduced pressure to provide 7.21 g (21.07 mM) of crude product as light-brown solid. To a solution of 7.21 g (21.07 mM) of this crude mesylate in ethanol (42 ml) was added 5.9 g (42.33 mM) of triethylamine as well as 3.69 g (21.05 mM) of 4-phenylpiperidine and the mixture was refluxed for 18 hours. After cooling to room temperature, the reaction mixture was diluted with water and extracted with ethyl acetate. The organic layer was washed with water and saturated aqueous solution of sodium chloride and dried over MgSO4. After concentration, the crude product was purified by column chromatography (ethyl acetate-hexane: 50%) to provide the title compound as light-yellow oil.

1. extractionthe reaction mixture was extracted with ethyl acetate
2. washThe organic layer was washed with water and saturated aqueous solution of sodium chloride
3. dry with materialdried over MgSO4
4. distillationThe solvent was then distilled off under reduced pressure
5. customto provide 7.21 g (21.07 mM) of crude product as light-brown solid
6. temperaturethe mixture was refluxed for 18 hours
7. extractionextracted with ethyl acetate
8. washThe organic layer was washed with water and saturated aqueous solution of sodium chloride
9. dry with materialdried over MgSO4
10. concentrationAfter concentration
11. customthe crude product was purified by column chromatography (ethyl acetate-hexane: 50%)