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:
Sep. 12, 1995
Filed:
Nov. 27, 1992
Applicant:
Inventors:
Jean-Erick Ancel, Rouen, FR;
Bienayme, Hugues, Lyon, FR;
Lucette Duhamel, Mont Saint Aignan, FR;
Pierre Duhamel, Mont Saint Aignan, FR;
Assignee:
Rhone-Poulenc Nutrition Animale, Commentry, FR;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
568691 ; 568378 ; 568403 ; 568404 ;
Abstract
The present invention relates to a new method of condensing polyenic compounds wherein a compound having the formula III ##STR1## is condensed with a compound having the formula IV ##STR2## under the influence of a Lewis acid or a protic acid. R.sub.1 through R.sub.7 represent alkyl or alkenyl groups, A' is preferably chlorine, B is preferably a hydroxyl group, and n' is 0 to 10. The invention also relates to novel intermediates for use in the preparation of Vitamins A and E produced by means of the new method.