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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.:

US 4540792 B1

PDFFull Text
Date of Patent:
Sep. 10, 1985

Filed:

Mar. 07, 1983

Process for the preparation of a free l .alpha.-amino acid

Applicant:
Inventors:

Auguste Commeyras, Clapiers, FR;

Aldo Previero, Montpellier, FR;

Martine Pugniere, Montpellier, FR;

Assignees:

Centre National de la Recherche Scientifique, Paris, FR;

Institut National de la Sante et de la Reserche Medicale, Paris, FR;

Attorney:

Dressler, Goldsmith, Shore, Sutker & Milnamow, Ltd.

Primary Examiner:

Richard A Schwartz

Int. Cl.
CPC ...
C07D / ; C07D / ; C07D / ;
U.S. Cl.
CPC ...
548344 ; 548498 ; 548532 ; 548535 ; 562443 ; 562445 ; 562447 ; 562557 ; 562559 ; 562560 ; 562561 ; 562562 ; 562563 ; 562564 ; 562567 ; 562570 ; 562571 ; 562573 ; 562575 ;
Abstract

This invention relates to a process for the preparation of free L .alpha.-amino acids by the complete conversion of their D antipodes taken individually or possibly in racemic mixtures. The process according to the present invention is characterized in that the D antipodes of an ester of said .alpha.-amino acid is racemized in the presence of a chemical catalyst formed by at least one aromatic aldehyde corresponding to the general formula: ##STR1## wherein: Ar represents an aromatic ring optionally containing a heteroatom, such as nitrogen, and

Find Patent Forward Citations

Commeyras, Auguste. (1985). Process for the preparation of a free l .alpha.-amino acid (U.S. Patent No. 4540792). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4540792

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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