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:
Feb. 23, 1982
Filed:
Feb. 28, 1980
Applicant:
Inventors:
Emmerich Paszthory, Hofheim am Taunus, DE;
Karl G Seifert, Frankfurt am Main, DE;
Vincenz Zimmermann, Nauheim, DE;
Hans J Nestler, Kelkheim, DE;
Assignee:
Hoechst Aktiengesellschaft, Frankfurt am Main, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
568637 ; 568638 ; 568633 ;
Abstract
Diazotization of 4-phenoxy-anilines in aqueous sulfuric acid of 60 to 75% strength and decomposition of the resulting diazonium compound in sulfuric acid of the same concentration range yields the corresponding phenols in high yields and quality. These phenols are intermediate for the corresponding 4-phenoxy-phenoxy alkane carboxylic acids which are pharmaceuticals capable of reducing the blood serum lipid level.