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:
Apr. 02, 2019
Filed:
Dec. 06, 2016
Applicant:
Sumitomo Chemical Company, Limited, Tokyo, JP;
Inventor:
Koji Hagiya, Osaka, JP;
Assignee:
SUMITOMO CHEMICAL COMPANY, LIMITED, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
C07D 413/04 (2006.01); C07D 213/81 (2006.01);
U.S. Cl.
CPC ...
C07D 413/04 (2013.01); C07D 213/81 (2013.01);
Abstract
A method is provided for producing a compound represented by formula (3), wherein n is 1, 2, 3 or 4, by mixing a compound represented by formula (2), a tri(C1-C3 alkyl)silyl(C1-C4 perfluoroalkane) and a fluoride. A method for producing the compound represented by formula (3) contains a step for producing the compound represented by formula (2) by an intramolecular dehydration condensation of a compound represented by formula (1) and by a step for mixing the compound represented by formula (2), a tri(C1-C3 alkyl)silyl(C1-C4 perfluoroalkane) and a fluoride.