Hydrochloric Acid → (S)-3-amino-1-(1-(3-chloro-5-(trifluoromethyl)pyridin-2-yl)piperidin-4-yl)pyrrolidin-2-one

Participants

Reaction Steps

To a solution of (S)-tert-butyl 1-(1-(3-chloro-5-(trifluoromethyl)pyridin-2-yl)piperidin-4-yl)-2-oxopyrrolidin-3-ylcarbamate (4 g, 8.6 mmol) in EtOAc (20 mL) was added HCl in isopropanol (5-6 M, 16 mL) and the reaction was stirred overnight at ambient temperature. The reaction was concentrated under vacuum and the material dissolved in water (about 20 mL). The aqueous layer was basified to about pH 12 using NaOH (1 N) and the aqueous layer extracted with DCM (150 mL). The organic layer was washed with brine (30 mL), dried over MgSO4, filtered and concentrated under vacuum to give (S)-3-amino-1-(1-(3-chloro-5-(trifluoromethyl)pyridin-2-yl)piperidin-4-yl)pyrrolidin-2-one (3.1 g, 100%).

Provenance & Evidence