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. 26, 1983
Filed:
Jan. 08, 1982
Applicant:
Inventors:
Rolf-Dieter Acker, Leimen, DE;
Gerhard Hamprecht, Weinheim, DE;
Assignee:
BASF Aktiengesellschaft, , DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D / ; C07D / ;
U.S. Cl.
CPC ...
546289 ; 546318 ;
Abstract
2-Aminopyridine derivatives are prepared by reacting a quaternary ammonium compound with malodinitrile in the presence of an alkanol, followed by reaction with ammonia in the presence of an alkanol, water and/or an ether to give aminonicotinonitrile and, if desired, then reacting this product with an alkali metal compound to give aminonicotinic acid. The 2-aminopyridine derivatives obtainable by the process of the invention are valuable starting materials for the preparation of pesticides, drugs, vitamins and dyes.