Process for producing .alpha.-(trifluoromethyl)arylacetic acid

Organic compounds -- part of the class 532-570 series – Organic compounds – Carboxylic acids and salts thereof

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C07C 5334

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active

056727429

ABSTRACT:
.alpha.-(trifluoromethyl)arylacetic acid for use as raw materials for medicines, agricultural chemicals, liquid crystals etc. or reagents for determining an optical purity is readily obtained through very simple reaction steps, i.e. by reacting a perfluoro(2-methyl-1,2-epoxypropyl)ether compound obtainable by ozone, oxidation of a heptafluoroisobutenyl ether compound with an aromatic compound ArH to afford an .alpha.,.alpha.-bis(trifluoromethyl)arylacetic acid ester, followed by decarboxylation and hydrolysis of the resulting ester compound.

REFERENCES:
Aaron et al., "Resolution and Configuration of .alpha.-Substituted Phenylacetic Acids" Journal of Organic Chemistry, vol. 32, pp. 2797-2803 (1967).
Middleton et al., "The Synthesis of Antiinflammatory .alpha.-(Triflouromethyl)Arylacetic Acids", Journal of Fluorine Chemistry, vol. 22, pp. 561-574 (1983).
Everett et al., "Preparation of .alpha.-Trifluoromethyl Esters From Malonic Esters", Journal of Organic Chemistry, vol. 49, pp. 3702-3706 (1984).
Muzard et al., "Fluorinated Ketene Dithioacetals; 1, Preparation and Application to the Synthesis of .alpha.-Trifluoromethylthiocarboxylic S-Esters and Aldehyde Derivatives", Synthesis, vol. pp. 965-968 (1992).
No. 69 Spring Annual Meeting Preprints II, pp. 1080 of Chemical Society of

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