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. 25, 1994
Filed:
Nov. 16, 1992
Applicant:
Inventors:
Assignee:
Rhone-Poulenc Chimie, Courbevoie, FR;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07B / ; C07B / ; C07B / ; C07C / ;
U.S. Cl.
CPC ...
562401 ; 562445 ; 562554 ; 562575 ; 562553 ; 564302 ; 564303 ; 564304 ; 526263 ; 526304 ; 526305 ; 526306 ; 5253267 ; 5253283 ; 5253595 ; 5253596 ; 525374 ; 525375 ; 525379 ;
Abstract
The present invention relates to chiral supports and to their use in the asymmetric synthesis, deracemization and optical inversion of organic chiral compounds. In particular, the supports are used in combination with thermal equilibration of a species having a reactive achiral portion. Preferably, these supports are obtained by the copolymerization of at least one chiral unit and at least one functionalizing unit or by the polymerization of at least one chiral unit which is a source of said functionalizing unit. Optionally, a crosslinking agent is utilized. By utilizing these supports and thermal equilibration, excess enantiomers can be produced.