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:
Jul. 10, 2018
Filed:
Jul. 23, 2015
Applicant:
Basf SE, Ludwigshafen, DE;
Inventors:
Bernd Schäfer, Dierbach, DE;
Wolfgang Siegel, Limburgerhof, DE;
Assignee:
BASF SE, Ludwigshafen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 403/24 (2006.01); B01J 31/02 (2006.01); B01J 31/22 (2006.01);
U.S. Cl.
CPC ...
C07C 403/24 (2013.01); B01J 31/0222 (2013.01); B01J 31/2291 (2013.01); B01J 31/2295 (2013.01); B01J 2231/645 (2013.01); B01J 2531/821 (2013.01); C07B 2200/07 (2013.01); C07C 2601/16 (2017.05);
Abstract
The invention relates to a method for the non-stereoselective and also for the stereoselective synthesis of astaxanthin from astacin. For this purpose, a reducing agent is used selected from the group of hydrogen, a secondary alcohol, formic acid and also the salts of formic acid or from a mixture of at least two representatives of the compound classes stated above. The invention further relates to the use of astacin as starting compound for the synthesis of astaxanthin.