反应详情

3.67 g (30 mmol) of dimethylaminopyridine was added to a solution of 65.48 g (0.3 mol) of di-t-butyl dicarbonate in 300 ml of anhydrous toluene, and the mixture was stirred at room temperature for 15 minutes. A solution of 47.17 g (0.3 mol) of 1-aminocyclohexanecarboxylic acid methyl ester in 100 ml of anhydrous toluene was added to the reaction solution, and the mixture was stirred at room temperature for 1 hour. Further, after 60.71 g (0.6 mol) of triethylamine and 44.1 g (0.45 mol) of furfuryl alcohol were added, the mixture was heated under reflux for 3 hours. The reaction solution was returned to room temperature and was concentrated under reduced pressure. The obtained residue was crushed by a mortar and stirred in a mixture solution of 5 ml of hydrochloric acid and 3 L of water for 18 hours. The obtained crystal was collected by filtration to obtain 74.37 g (88%) of the title compound.

1. stirringthe mixture was stirred at room temperature for 1 hour
2. temperaturethe mixture was heated
3. temperatureunder reflux for 3 hours
4. customwas returned to room temperature
5. concentrationwas concentrated under reduced pressure
6. customThe obtained residue was crushed by a mortar
7. stirringstirred in a mixture solution of 5 ml of hydrochloric acid and 3 L of water for 18 hours
8. filtrationThe obtained crystal was collected by filtration