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:
Jan. 23, 1990
Filed:
Feb. 21, 1989
Applicant:
Inventors:
Ryoji Noyori, Aichi, JP;
Masato Kitamura, Aichi, JP;
Takeshi Ohkuma, Gumma, JP;
Hidenori Kumobayashi, Kanagawa, JP;
Assignee:
Takasago International Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ; C07C / ;
U.S. Cl.
CPC ...
562567 ; 560184 ;
Abstract
A process for preparing carnitine which comprises asymmetrically hydrogenating a .gamma.-halogeno-.beta.-keto ester represented by formula (I): ##STR1## wherein X represents a chlorine atom or a bromine atom; and R represents a lower alkyl group, in the presence of a ruthenium-optically active phosphine complex represented by formula (II), (III) or (IV):
Quick Actions:
Noyori, Ryoji. (1990). Process for preparing carnitine (U.S. Patent No. 4895979). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4895979
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile