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:
Jan. 20, 1976
Filed:
Jul. 22, 1974
Applicant:
Inventor:
Kurt Gengnagel, Offenbach (Main), DT;
Assignee:
Hoechst Aktiengesellschaft, Frankfurt am Main, DT;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
2604 / ;
Abstract
A process for preparing 4-amino-2,5-di-(C.sub.1 -C.sub.4) alkoxybenzonitriles which comprises brominating 1-acylamino-2,5-dialkoxybenzenes, converting the 1-acylamino-2,5-dialkoxy-4-bromobenzenes so obtained by the reaction with copper-I-cyanide to the 4-acylamino-2,5-dialkoxy-benzonitriles and subsequently hydrolyzing the acylamino group; the known compounds are prepared by means of this process in better yields and in a technically simpler way.
Gengnagel, Kurt. (1976). Process for preparing 4-amino-2,5-dialkoxybenzonitriles (U.S. Patent No. 3933887). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/3933887
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile