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. 13, 1976
Filed:
Jun. 28, 1973
Applicant:
Inventors:
Assignee:
Asahi Kasei Kogyo Kabushiki Kaisha, Osaka, JA;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C / ; C07C / ; C07C / ; C07C / ;
U.S. Cl.
CPC ...
2606 / ; 2603 / ; 2605 / ; 260580 ; 260645 ; 2606 / ; 260670 ;
Abstract
Biphenyl or nucleus-substituted biphenyl can be prepared from benzene or nucleus-substituted benzene and oxygen or oxygen-containing gas in one step according to an equation ##SPC1## Wherein X is H, lower alkyl having 1 to 6 carbon atoms Cl, NO.sub.2, or lower alkoxy having 1 - 3 carbon atoms and Y is H or CH.sub.3, with excellent yield by heating the reactants in the presence, as a catalyst, of palladium or a palladium compound and sulfuric acid or sulfuric acid and a lower saturated fatty acid added to the reaction system and further in the presence or in the absence of an alkali metal salt.