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:
Dec. 31, 2019
Filed:
Jun. 10, 2015
Applicant:
Ube Industries, Ltd., Ube-shi, Yamaguchi, JP;
Inventors:
Yasuhito Yamamoto, Ube, JP;
Masayoshi Oue, Ube, JP;
Masahiko Hagihara, Ube, JP;
Yukinori Wada, Ube, JP;
Gen Mizuno, Ube, JP;
Yasunori Tsuzaki, Ube, JP;
Kenichi Arai, Ube, JP;
Assignee:
UBE INDUSTRIES, LTD., Ube-Shi, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D 213/71 (2006.01); C07D 401/12 (2006.01);
U.S. Cl.
CPC ...
C07D 213/71 (2013.01); C07D 401/12 (2013.01);
Abstract
The present invention provides: a method for producing a mixed sulfonic acid anhydride of the general formula (1) by reacting a sulfonic acid compound of the general formula (2) with a perfluoroalkyl sulfonic acid anhydride or a perfluoroalkyl sulfonic acid halide; and a method for producing a sulfonamide compound of the general formula (4) obtained by reacting an amine compound of the general formula (3) with a mixed sulfonic acid anhydride of the general formula (1).