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

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%).

1. concentrationThe reaction was concentrated under vacuum
2. dissolutionthe material dissolved in water (about 20 mL)
3. extractionthe aqueous layer extracted with DCM (150 mL)
4. washThe organic layer was washed with brine (30 mL)
5. dry with materialdried over MgSO4
6. filtrationfiltered
7. concentrationconcentrated under vacuum

ORD 기록

ord-312c7eb2dd924d7e87dafb7e9c620211

출처 데이터셋

uspto-grants-2014_06

DOI

10.6084/m9.figshare.5104873.v1

특허 번호

US08754226B2