Preparation of benzaldehyde dialkyl acetals
AssigneeBASF SE
InventorsDieter Degner, Heinz Hannebaum, Hardo Siegel, Walter Gramlich
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Abstract
Benzaldehyde dialkyl acetals of the formula ##STR1## wherein R.sup.1 and R.sup.2 are each alkyl, are prepared by electrochemical oxidation of an alkyltoluene of the formula ##STR2## by a process in which the electrolyte used contains from 60 to 90% by weight of an alkanol of the formula R.sup.2 OH, from 8.5 to 40% by weight of the alkyltoluene and from 0.01 to 1.5% by weight of an HO.sub.3 S-containing acid.
Claims6
A process for the preparation of a benzaldehyde dialkyl acetal of the formula ##STR5## where R.sup.1 is alkyl of 1 to 8 carbon atoms and R.sup.2 is methyl or ethyl, by electrochemical oxidation of an alkyltoluene of the formula ##STR6## in an alkanol of the formula R.sup.2 OH and in the presence of an HO.sub.3 S-containing acid, wherein the electrochemical oxidation is carried out using an electrolyte which contains from 60 to 90% by weight of the alkanol, from 8.5 to 40% by weight of the alkyltoluene and from 0.01 to 1.5% by weight of the acid.
Dependencies are inferred from the claim text.