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. 30, 1993
Filed:
Mar. 27, 1992
Applicant:
Inventors:
Pierre F Charbardes, Sainte Foy Les Lyon, FR;
Lucette Duhamel, Mont Saint Aignan, FR;
Pierre Duhamel, Mont Saint Aignan, FR;
Jerome Guillemont, Beuzeville, FR;
Jean-Marie Poirier, Saint Martin du Vivier, FR;
Assignee:
Rhone-Poulenc Nutrition Animale, Commentry, FR;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07D / ; C07D / ;
U.S. Cl.
CPC ...
549369 ; 549221 ; 549357 ; 549374 ; 549378 ; 549429 ; 549430 ; 549453 ; 549455 ;
Abstract
New intermediates and processes for the preparation of vitamins A and E, which are the acetals of 5,6-dihalo-3-methyl-3-hydroxyhexanal or of 6-halo-3-hydroxy-3-methyl-5-hexenal or 3-methyl-3-hydroxy-5-hexenal, as well as processes for making the intermediates. After dehydrohalogenation and dehydration these intermediates are condensed directly with .beta.-ionone or with 2-methyl-2-heptene-6-one to synthesize vitamins A and E respectively.