反应详情

633 mg (3.3 mmol) of 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide hydrochloride was added to a solution of 784 mg (3 mmol) of 1-[(phenylacetyl)amino]cyclohexanecarboxylic acid obtained in Reference Example 2 in 20 ml of methylene chloride. After the mixture was stirred at room temperature for 4 hours, the reaction solution was concentrated under reduced pressure, ethyl acetate was added thereto, and the mixture was successively washed with water, a 10% aqueous potassium hydrogensulfate solution, a saturated aqueous sodium hydrogencarbonate solution and saturated brine, followed by drying with anhydrous sodium sulfate. The solvent was distilled off under reduced pressure to obtain 625 mg (86%) of the title compound.

1. concentrationthe reaction solution was concentrated under reduced pressure, ethyl acetate
2. additionwas added
3. washthe mixture was successively washed with water
4. dry with materialby drying with anhydrous sodium sulfate
5. distillationThe solvent was distilled off under reduced pressure