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:
Jul. 19, 1983
Filed:
Jan. 28, 1981
Applicant:
Inventors:
Fumio Ishii, Hino, JP;
Kenichi Kishi, Sagamihara, JP;
Assignee:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ; C07C / ; C07C / ; C07C / ; C07C / ;
U.S. Cl.
CPC ...
2603 / ; 260369 ;
Abstract
A method for synthesizing p- or o-benzoquinone derivatives represented by formula III or IV ##STR1## by oxidizing, with an aqueous hypohalite solution having a pH of from 8 to 10, a p- or o-hydroquinone derivative represented by formula I or II ##STR2## Oxidation is conducted at a temperature between -20.degree. C. and 35.degree. C., in the presence of a quaternary ammonium salt phase transfer catalyst.