Process for the preparation of p. isobutyl hydratropic acid

C - Chemistry – Metallurgy – 07 – C

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260/486.1, 260/5

C07C 51/00 (2006.01) C07C 57/30 (2006.01) C07C 59/347 (2006.01) C07C 69/67 (2006.01)

Patent

CA 1048054

ABSTRACT OF THE DISCLOSURE: P. Isobutyl-hydratropic acid having the formula: Image (I) is obtained by treating a compound of the general formula: Image (II) wherein R and R' are identical or different and each represent an alkyl radical having from 1 to 5 carbon atoms, with a strong acid in aqueous solution or with an addition salt of a strong acid with an organic base, at a temperature ranging from 200 to 240°C. P. Isobutyl-hydratropic acid is a compound widely used in thereby as an antiinflammatory, analgesic and antirheumatic agent.

218480

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