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:
Aug. 05, 1997
Filed:
Mar. 15, 1996
Applicant:
Inventors:
Katsuya Kato, Nagoya, JP;
Shozo Fujii, Nagoya, JP;
Masato Katayama, Nagoya, JP;
Hiroshi Kimoto, Kuwana, JP;
Primary Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
548494 ;
Abstract
An optically active (+)-4,4,4-trifluoro-3-(indole-3-)butyric acid is produced by a method which consists essentially of causing 2,2,2-trifluoroethanol to react on a racemic modification 4,4,4-trifluoro-3-(indole-3-)butyric acid thereby forming a reaction solution containing the trifluoroethyl ester of the butyric acid, causing an enzyme having an esterase activity to act on the reaction solution thereby forming an optically active (+)-4,4,4-trifluoro-3-(indole-3-)butyric acid, and thereafter separating the reaction product from the reaction solution.