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. 04, 2023
Filed:
Apr. 03, 2019
Applicant:
Bayer Aktiengesellschaft, Leverkusen, DE;
Inventors:
Assignee:
Bayer Aktiengesellschaft, Leverkusen, DE;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C07C 51/08 (2006.01); C07C 17/16 (2006.01); C07C 29/141 (2006.01); C07C 45/42 (2006.01); C07C 253/14 (2006.01); C07F 3/02 (2006.01);
U.S. Cl.
CPC ...
C07C 51/08 (2013.01); C07C 17/16 (2013.01); C07C 29/141 (2013.01); C07C 45/42 (2013.01); C07C 253/14 (2013.01); C07F 3/02 (2013.01);
Abstract
The invention relates to a multi-stage process for preparing 2,6-dialkylphenylacetic acids of the general formula (I) by reacting 2,6-dialkylbromobenzenes with (1) magnesium, (2) a formamide, (3) an acid, (4) hydrogenation of the benzaldehyde obtained, (5) activation of the benzyl alcohol obtained, (6) cyanation of the activated benzyl alcohol and (7) hydrolysis of the nitrile obtained.