Ammonia → HCID 53629170, compound

Temperature

-78 °C

1-Benzyl-4-(2,2,2-trifluoroethyl)pyrrolidin-2-one x102 (1.67 g, 6.5 mmol) is dissolved in diethyl ether (17 ml) and anhydrous tert-butanol (7 ml). The solution is cooled to −78° C. and ammonia (33 ml) is condensed into the flask. Sodium (0.373 g, 16.2 mmol) is added to the solution portionwise at −78° C., followed by the anhydrous tert-butanol (7 ml). The reaction mixture is stirred at −78° C. for 2-3 h. Ethanol (50 ml) is slowly added. The mixture is warmed to room temperature and stirred overnight. Saturated ammonium chloride is added and the mixture is extracted with ether (3 times). The organic layers are combined, dried over magnesium sulphate, filtered and concentrated in vacuo to obtain 4-(2,2,2-trifluoroethyl)pyrrolidin-2-one x103 as an orange solid (0.61 g).

1. customcondensed into the flask
2. temperatureThe mixture is warmed to room temperature
3. stirringstirred overnight
4. extractionthe mixture is extracted with ether (3 times)
5. dry with materialdried over magnesium sulphate
6. filtrationfiltered
7. concentrationconcentrated in vacuo

ORD record

ord-12b2441e72fd4e9b985e62c76415179e

Source dataset

uspto-grants-2012_05

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US08183241B2