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:
Aug. 20, 2019
Filed:
Jun. 24, 2016
Applicant:
Agro-kanesho Co., Ltd., Minato-ku, JP;
Inventor:
Seiji Kakinuma, Misato, JP;
Assignee:
AGRO-KANESHO CO., LTD., Minato-ku, JP;
Primary Examiner:
Int. Cl.
CPC ...
C07C 46/00 (2006.01); B01J 23/00 (2006.01); C07C 46/04 (2006.01); B01J 23/22 (2006.01); C07B 61/00 (2006.01);
U.S. Cl.
CPC ...
C07C 46/04 (2013.01); B01J 23/22 (2013.01); C07B 61/00 (2013.01); C07C 2602/10 (2017.05);
Abstract
Provided is a method of producing 2-hydroxy-1,4-naphthoquinone in a large amount, a high yield, and inexpensively. This method comprises oxidizing 2-hydroxynaphthalene with hydrogen peroxide in (1) an alkaline aqueous solution or in (2) a mixture of an alkaline aqueous solution with an inert organic solvent incompatible with water, in the presence of a vanadium catalyst.