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:
Dec. 26, 2023
Filed:
Feb. 18, 2022
Applicant:
Dsm Ip Assets B.v., Heerlen, NL;
Inventors:
Raphael Beumer, Kaiseraugst, CH;
Werner Bonrath, Kaiseraugst, CH;
Marc-André Mueller, Kaiseraugst, CH;
Bettina Wüestenberg, Kaiseraugst, CH;
Assignee:
DSM IP ASSETS B.V., Heerlen, NL;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 67/293 (2006.01); C07B 49/00 (2006.01); C07C 403/08 (2006.01); C07C 403/12 (2006.01); C07C 69/145 (2006.01);
U.S. Cl.
CPC ...
C07C 67/293 (2013.01); C07B 49/00 (2013.01); C07C 403/08 (2013.01); C07C 403/12 (2013.01); C07C 69/145 (2013.01);
Abstract
Processes for synthesizing new compounds that may usefully be employed in organic synthesis, especially in the synthesis of vitamin A or β-carotene and derivatives thereof, e.g. canthaxanthin, astaxanthin or zeaxanthin are disclosed. The new compounds are especially useful as intermediates (building blocks) in the synthesis of vitamin A or β-carotene, preferably vitamin A.