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:
Oct. 23, 1984
Filed:
Jul. 23, 1979
Applicant:
Inventor:
Hans-Joachim Kabbe, Leverkusen, DE;
Assignee:
Bayer Aktiengesellschaft, Leverkusen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
549401 ; 549332 ; 549345 ;
Abstract
Chroman-4-ones are prepared by reacting an o-hydroxyarylcarbonyl compound with a carbonyl compound in the presence of an amine. A typical reaction of o-hydroxy-acetophenone with cyclopentanone can be depicted as follows: ##STR1##