Invention Grant
- Patent Title: Preparation of chiral amides and amines
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Application No.: US15498726Application Date: 2017-04-27
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Publication No.: US10011559B2Publication Date: 2018-07-03
- Inventor: Hang Zhao , Stefan G. Koenig , Charles P. Vandenbossche , Surendra Singh , Harold Scott Wilkinson , Roger P. Bakale
- Applicant: SUNOVION PHARMACEUTICALS INC.
- Applicant Address: US MA Marlborough
- Assignee: SUNOVION PHARMACEUTICALS INC.
- Current Assignee: SUNOVION PHARMACEUTICALS INC.
- Current Assignee Address: US MA Marlborough
- Agency: Heslin Rothenberg Farley & Mesiti P.C.
- Agent Nathan B. Davis
- Main IPC: C07C231/14
- IPC: C07C231/14 ; C07C249/08 ; C07C209/62 ; C07C231/12 ; C07C209/50 ; C07C211/42 ; C07B43/06

Abstract:
This invention provides a convenient method for converting oximes into enamides. The process does not require the use of metallic reagents. Accordingly, it produces the desired compounds without the concomitant production of a large volume of metallic waste. The enamides are useful precursors to amides and amines. The invention provides a process to convert a prochiral enamide into the corresponding chiral amide. In an exemplary process, a chiral amino center is introduced during hydrogenation through the use of a chiral hydrogenation catalyst. In selected embodiments, the invention provides methods of preparing amides and amines that include the 1,2,3,4-tetrahydro-N-alkyl-1-naphthalenamine or 1,2,3,4-tetrahydro-1-naphthalenamine substructure.
Public/Granted literature
- US20180016224A1 PREPARATION OF CHIRAL AMIDES AND AMINES Public/Granted day:2018-01-18
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