Process for preparing .alpha.-hydroxy-alkanoic acids and compoun

Details Process for preparing .alpha.-hydroxy-alkanoic acids and compoun Process for preparing .alpha.-hydroxy-alkanoic acids and compoun

1985-11-21

1987-12-15

Killos, Paul J.

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

Organic compounds

Carboxylic acids and salts thereof

562508, C07C 5948

Patent

active

047134852

ABSTRACT:
The invention relates to a process for preparing .alpha.-hydroxy-alkanoic acids of general formula: ##STR1## in which R represents hydrogen or a lower alkyl radical and Cy represents phenyl or a heterocyclic radical, both radicals optionally comprising one or more substituents selected from the group consisting of lower alkyl, lower alkenyl, lower alkynyl radicals and halogen atoms, process which comprises the treatment of an .alpha.,.alpha.-dihalogenated ketone of general formula: ##STR2## in which R and Cy have the same meaning as above and X represents chlorine, bromine or iodine, in the presence of an aqueous solution of an alkali metal hydroxide and a non polar organic solvent selected from an aromatic or alicyclic hydrocarbon, the treatment being carried out at a temperature between the boiling temperature of the reaction medium at atmospheric pressure and 240.degree. C. under pressure and the alkali metal so formed is then acidified to obtain the desired acid.

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