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:
Oct. 10, 2023
Filed:
Jan. 07, 2022
Applicant:
HK Inno.n Corporation, Seoul, KR;
Inventors:
Jae Hong Kweon, Gyeonggi-do, KR;
Eun Sun Kim, Gyeonggi-do, KR;
Hyuk Woo Lee, Gyeonggi-do, KR;
Dong Hyun Ko, Gyeonggi-do, KR;
Chae Young Ryu, Gyeonggi-do, KR;
Kwang Do Choi, Gyeonggi-do, KR;
SeungPyeong Heo, Seoul, KR;
Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C 69/76 (2006.01); C07D 211/74 (2006.01); B01J 21/18 (2006.01); B01J 23/44 (2006.01);
U.S. Cl.
CPC ...
C07D 211/74 (2013.01); B01J 21/18 (2013.01); B01J 23/44 (2013.01); C07C 69/76 (2013.01); C07B 2200/07 (2013.01);
Abstract
A preparation method according to the present invention makes it possible to industrially produce large amounts of highly pure optically active tert-butyl 3-methyl-4-oxopiperidine-1-carboxylate in high yield by use of commercially available reagents and solvents. In addition, the use of novel intermediates according to the present invention makes it possible to produce highly pure optically active tert-butyl 3-methyl-4-oxopiperidine-1-carboxylate in high yield.