Process for mono-, di-, trisubstituted acetic acids

Details Process for mono-, di-, trisubstituted acetic acids Process for mono-, di-, trisubstituted acetic acids

1990-09-20

1991-08-20

Killos, Paul J.

Organic compounds -- part of the class 532-570 series

Organic compounds

Carboxylic acids and salts thereof

562606, C07C 5968, C07C 5300

Patent

active

050416405

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.

REFERENCES:
patent: 3674836 (1972-04-01), Creger et al.
patent: 3935234 (1976-01-01), Reidenbacher
patent: 4126637 (1978-11-01), Goel et al.
patent: 4665226 (1987-05-01), Kearney

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