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:
Oct. 09, 2012
Filed:
Jan. 08, 2008
Akihiro Ishii, Saitama, JP;
Hideyuki Tsuruta, Fujimino, JP;
Yuzuru Morino, Ube, JP;
Mikihiro Takahashi, Ube, JP;
Akihiro Ishii, Saitama, JP;
Hideyuki Tsuruta, Fujimino, JP;
Yuzuru Morino, Ube, JP;
Mikihiro Takahashi, Ube, JP;
Central Glass Company, Limited, Ube-shi, JP;
Abstract
An optically active α-fluorocarboxylate is produced by reacting an optically active α-hydroxycarboxylate with sulfuryl fluoride (SOF), trifluoromethanesulfonyl fluoride (CFSOF) or nonafluorobutanesulfonyl fluoride (CFSOF) in the presence of organic base and in the absence of reaction solvent. More preferably, a distillation purification is conducted after adding acid to the reaction-terminated liquid. With this, it is possible to produce an optically active α-fluorocarboxylate of a still higher purity. It is possible by this process to advantageously produce an optically active α-fluorocarboxylate on a large-amount scale.