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. 14, 1995
Filed:
Jul. 06, 1993
Applicant:
Inventor:
Helmut Kraus, Koln, DE;
Assignee:
Bayer Aktiengesellschaft, Leverkusen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D / ; C07D / ; C07D / ; C07D / ;
U.S. Cl.
CPC ...
544 82 ; 544124 ; 544360 ; 546193 ; 546250 ; 546281 ;
Abstract
2,5-Disubstituted pyridines of the formula ##STR1## can be prepared by reacting enamines of the formula ##STR2## with .beta.-amino-acrylonitriles of the formula ##STR3## and treating the open-chain intermediate, which represents a R-R.sup.1 -5-amino-penta-2,4-dienonitrile, with protic acids or with ammonia.
Kraus, Helmut. (1995). Process for the preparation of 2,5-disubstituted pyridines (U.S. Patent No. 5466800). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5466800
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile