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:
May. 17, 2022
Filed:
Jan. 18, 2019
Applicant:
Yuki Gosei Kogyo Co., Ltd., Tokyo, JP;
Inventors:
Assignee:
YUKI GOSEI KOGYO CO., LTD., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
C07D 401/06 (2006.01);
U.S. Cl.
CPC ...
C07D 401/06 (2013.01);
Abstract
The object of the present invention is to provide a simple method for preparing an N-alkoxycarbonyl piperidine derivative. The object can be solved by a method for preparing a hydroxypiperidine derivative, comprising a step of: wherein Ris an aralkyl group which may have a substituent group, and Ris an alkyl group, with 4-hydroxypiperidine in the presence of base, to obtain a hydroxypiperidine derivative represented by the formula (2) or the formula (3): wherein Ris an aralkyl group which may have a substituent group.