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:
Aug. 20, 1991
Filed:
Sep. 20, 1990
Applicant:
Inventor:
Paul L Creger, Ann Arbor, MI (US);
Assignee:
Warner-Lambert Company, Morris Plains, NJ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ; C07C / ;
U.S. Cl.
CPC ...
562471 ; 562606 ;
Abstract
An improved process for the preparation of mono-, di-, or trisubstituted acetic acids including 5-(2,5-dimethylphenoxy)-2,2-dimethylpentanoic acid by a novel synthesis is described where a carboxylic acid is converted to a soluble metalated magnesium or zinc carboxylate containing a ligand and subsequent alkylation of this intermediate in the presence of an alkali amide to afford the desired product in two steps.