Patents Represented by Attorney Francis J. Tinny

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  • Process for mono-, di-, trisubstituted acetic acids
    Patent number: 5041640
    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.
    Type: Grant
    Filed: September 20, 1990
    Date of Patent: August 20, 1991
    Assignee: Warner-Lambert Company
    Inventor: Paul L. Creger