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. 07, 2012
Filed:
Sep. 05, 2008
Jonathan Joachim Jodry, Kawagoe, JP;
Masashi Nagamori, Fujimino, JP;
Yuji Hagiwara, Kawagoe, JP;
Masaki Fujiwara, Kawagoe, JP;
Satoru Narizuka, Saitama, JP;
Jonathan Joachim Jodry, Kawagoe, JP;
Masashi Nagamori, Fujimino, JP;
Yuji Hagiwara, Kawagoe, JP;
Masaki Fujiwara, Kawagoe, JP;
Satoru Narizuka, Saitama, JP;
Central Glass Company, Limited, Ube-shi, JP;
Abstract
Disclosed is a process for producing 2-bromo-2,2-difluoroethanol, which comprises reducing a bromodifluoroacetic acid derivative represented by the formula [1] by using an ate hydride complex as a reducing agent. 2-Bromo-2,2-difluoroethanol thus produced can be used as the starting material to carry out the esterification step, the sulfination step and the oxidation step in this order, thereby producing a 2-alkylcarbonyloxy-1,1-difluoroethanesulfonic acid salt, wherein A represents a substituted or unsubstituted linear, branched or cyclic alkoxy group having 1 to 20 carbon atoms, a substituted or unsubstituted aryloxy group having 6 to 15 carbon atoms, a heteroaryloxy group having 4 to 15 carbon atoms, or a halogen atom.