Process for the preparation of aryloxyacetic acid

Details Process for the preparation of aryloxyacetic acid Process for the preparation of aryloxyacetic acid

C - Chemistry, Metallurgy

07

C

260/514.4, 260/5

C07C 59/70 (2006.01) C07C 51/235 (2006.01) C07C 51/255 (2006.01) C07C 59/84 (2006.01) C07C 205/56 (2006.01)

Patent

CA 1300641

ABSTRACT Process for the preparation of an aryloxyacetic acid by oxidation of aryloxyethanol of the formula: Image wherein m represents 1 or 2, n represents the numeral which results from the difference between 6 and m and R either individually or independently of one another represents hydrogen, alkyl, cycloalkyl, aryl, aralkyl, alkoxy, cyclo- alkoxy, aryloxy, halogen, alkylcarbonyl, aryl- carbonyl, carboxyl or nitro, or represents a benzene ring fused to the phenyl ring, in an aqueous alkaline reaction medium at a temperature in the range of 0°C to the boiling point of the reaction medium in the presence of a catalytic amount of a catalyst comprised of palladium, silver and optionally antimony, and carbon to form the corresponding alkali metal ester and contacting the alkali metal ester with a mineral acid. LE0778F

578110

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