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:
Apr. 21, 1992
Filed:
Mar. 04, 1991
Applicant:
Inventor:
James H Babler, Chicago, IL (US);
Assignee:
Loyola University of Chicago, Chicago, IL (US);
Primary Examiner:
Int. Cl.
CPC ...
C07C / ; C07C / ;
U.S. Cl.
CPC ...
568494 ; 560195 ; 568449 ; 568484 ;
Abstract
The present invention is an improved method to prepare 2,7-dimethyl-2,4,6-octatrienedial and related derivative compounds. This method of making 2,7-dimethyl-2,4,6-octatrienedial and derivatives thereof includes reacting 2-butenyl-bisphosphonic acid tetraalkyl ester and at least two equivalents of protected pyruvic aldehyde derivative in a nonpolar organic solvent in the presence of an alkali metal hydroxide. Compounds prepared by this invention are useful intermediates in the preparation of carotenoids.