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:
Nov. 06, 2012
Filed:
Dec. 18, 2007
Applicants:
Tsutomu Nanmyo, Ube, JP;
Shintaro Sasaki, Ube, JP;
Takashi Kume, Kawagoe, JP;
Inventors:
Assignee:
Central Glass Company, Limited, Ube-shi, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 315/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
There is provided a method for producing a tris(perfluoroalkanesulfonyl)methide acid salt represented by formula [1], including the steps of (a) reacting a methylmagnesium halide represented by formula [2] with a perfluoroalkanesulfonyl fluoride represented by formula [3], thereby obtaining a reaction mixture; and (b) directly reacting the obtained reaction mixture with at least one selected from the group consisting of alkali metal halides, quaternary ammonium salts, and quaternary phosphonium salts. By this method, it is possible to easily produce the target methide acid salt with high yield.