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. 13, 1984
Filed:
Oct. 18, 1983
Applicant:
Inventors:
Masakatsu Matsumoto, Sagamihara, JP;
Satoru Ito, Rockville, MD (US);
Assignee:
Sagami Chemical Research Center, Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
2603 / ;
Abstract
A method for preparing a benzoquinone represented by the general formula: ##STR1## where each of R.sup.1, R.sup.2, R.sup.3 and R.sup.4 is a hydrogen atom, an alkyl group or an aryl group, which comprises reacting a phenol represented by the general formula: ##STR2## where R.sup.1, R.sup.2 R.sup.3 and R.sup.4 are as defined above, with hydrogen peroxide in the presence of a ruthenium catalyst.