反应详情

To 2.39 g (10 mmol) of 1-benzhydryl-3-hydroxyazetidine dissolved in 20 ml of pyridine were added 1.46 g (12 mmol) of dimethylaminopyridine. Thereto was added 12.10 g (11 mmol) of p-toluenesulfonyl chloride at -40° C., followed by gradual increase in the temperature and subsequent 1 day of stirring at room temperature. This was mixed with 150 ml of water, extracted with chloroform (100 ml×3) and then dried over anhydrous sodium sulfate. After evaporation of the solvent, the resulting residue was purified by a silica gel column chromatography (250 ml, ethyl acetate:hexane 1:2) to yield 2.88 g (73%) of the title compound.

1. temperatureby gradual increase in the temperature and subsequent 1 day
2. extractionextracted with chloroform (100 ml×3)
3. dry with materialdried over anhydrous sodium sulfate
4. customAfter evaporation of the solvent
5. customthe resulting residue was purified by a silica gel column chromatography (250 ml, ethyl acetate:hexane 1:2)