反应详情

Under ice-cooling, 1 g (9 mmol) of methanesulfonyl chloride was added dropwise to a solution of 3 g (8 mmol) of 1-[[[4-(hydroxymethyl)phenyl]carbonyl]amino]cyclohexanecarboxylic acid phenylmethyl ester and 2.46 g (24 mmol) of triethylamine in methylene chloride. After the mixture was stirred at room temperature for 1 hour, 20 ml of 2N dimethylamine-tetrahydrofuran solution was added, and the mixture was stirred overnight. The reaction solution was distilled off under reduced pressure, a saturated aqueous sodium bicarbonate solution was added thereto, and the mixture was extracted with ethyl acetate. The organic layer was washed with saturated brine, and it was dried with anhydrous sodium sulfate. The solvent was distilled off under reduced pressure and the residue was purified by silica gel column chromatography to obtain 700 mg (22%) of the title compound.

1. temperatureUnder ice-cooling
2. stirringthe mixture was stirred overnight
3. distillationThe reaction solution was distilled off under reduced pressure
4. additiona saturated aqueous sodium bicarbonate solution was added
5. extractionthe mixture was extracted with ethyl acetate
6. washThe organic layer was washed with saturated brine, and it
7. dry with materialwas dried with anhydrous sodium sulfate
8. distillationThe solvent was distilled off under reduced pressure
9. customthe residue was purified by silica gel column chromatography