| 摘要 |
Process for the preparation of an aryloxyacetic acid/hydroxyethyl ether by oxidation of aryloxyethanol of the formula: <IMAGE> wherein R either individually or independently of one another represents hydrogen, alkyl, cycloalkyl, aryl, aralkyl, alkoxy, cycloalkoxy, aryloxy, halogen, alkylcarbonyl, arylcarbonyl, 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 DEG C. to the boiling point of the reaction medium in the presence of a catalytic amount of a catalyst comprised of palladium, bismuth, and carbon in the presence of a phenol corresponding to the structure: <IMAGE> wherein R is as described above and p is 0, 1 or 2, to form the corresponding alkali metal ester/hydroxyethyl ether after catalyst removal the alkali metal ester is contacted with a mineral acid.
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