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:
Feb. 10, 1998
Filed:
Apr. 05, 1996
Applicant:
Inventors:
Arlette Tixidre, Orsay, FR;
Lydia Zard, Gif sur Yvette, FR;
Guy Rossey, Voisins Le Bretonneux, FR;
Andre Bourbon, La Chaussee d'Ivry, FR;
Assignee:
Synthelabo, Le Plessis Robinson, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C12P / ;
U.S. Cl.
CPC ...
435280 ;
Abstract
A process for the preparation of ethyl 4,4,4-trifluoro-3(R)-hydroxybutanoate, wherein the ester functional group of the (S) enantiomer of ethyl (.+-.)-4,4,4-trifluoro-3-hydroxybutanoate which comprises (R) and (S) is selectively hydrolysed in aqueous medium, by means of a lipase, and the non-hydrolysed (R) enantiomer is then extracted and used in the preparation of 4,4,4-trifluoro-1,3(R)-butanediol.