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:
Jun. 25, 1991
Filed:
Oct. 13, 1989
Applicant:
Inventors:
Masaji Ishiguro, Osaka, JP;
Hiromitsu Iwata, Takatsuki, JP;
Takashi Nakatsuka, Mishima, JP;
Yasuo Yamada, Takaoka, JP;
Assignees:
Suntory Limited, Osaka, JP;
Nippon Soda Company, Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
C07D / ; C07B / ;
U.S. Cl.
CPC ...
540357 ;
Abstract
A process for producing 3-[1'-(R)-hydroxyethyl]-4-acyloxyazetidinone from 3-[1'-(R)-hydroxyethyl]-4-alkyl (or aryl) thioazetidinone using a copper salt of aliphatic or aromatic carboxylic acid is disclosed. The process is an effective route for producing 3-[1'-(R)-hydroxyethyl]-4-acyloxyazetidinone, and intermediate for synthesizing penems or carbapenems, without using a mercury salt which can cause an environmental hazard.