The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 09, 2002
Filed:
Dec. 07, 2000
Applicant:
Inventors:
Kyoung Rok Roh, Daejeon, KR;
Jung Hwan Lee, Daejeon, KR;
Dae Il Hwang, Incheon, KR;
Won Jang Lee, Daejeon, KR;
Kyung-Il Kim, Daejeon, KR;
Assignee:
Samsung Fine Chemicals Co., Ltd., Ulsan, KR;
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
C07C / ;
Abstract
A process for the preparation of chiral (S)-2,3-disubstituted-1-propylamine derivatives, in which a carbonyl group of (S) 3,4-disubstituted-1-butanecarbonyl derivatives is converted to an amine group, and the conversion reaction is performed through Curtius rearrangement or Hoffman rearrangement.