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:
May. 22, 2007
Filed:
Sep. 27, 2001
Norihisa Kondo, Yamaguchi, JP;
Hideyuki Mimura, Yamaguchi, JP;
Kosuke Kawada, Yamaguchi, JP;
Shoji Arai, Yamaguchi, JP;
Norihisa Kondo, Yamaguchi, JP;
Hideyuki Mimura, Yamaguchi, JP;
Kosuke Kawada, Yamaguchi, JP;
Shoji Arai, Yamaguchi, JP;
Tosoh F-Tech, Inc., Yamaguchi, JP;
Abstract
The present invention concerns a method for purifying/separating a 2-fluoro-3-oxoalkylcarboxylic acid ester from a reaction mixture resulting from the fluorination of a 3-oxoalkylcarboxylic acid ester. The method involves depleting the reaction mixture of a hydrogen fluoride byproduct; and subsequently, separating the 2-fluoro-3-oxoalkylcarboxylic acid ester by distillation. The 2-fluoro-3-oxoalkylcarboxylic acid ester obtained by the method of the invention is highly pure and is thus suitable for use as an intermediate for the production of pharmacological products or agricultural chemicals.