VERFAHREN ZUR HERSTELLUNG VON ALKYLSUBSTITUIERTEN ZIMTALDEHYDEN

Process for the preparation of alkyl-substituted cinnamaldehydes of the general formula I in which at least one of the radical R , R and R is an alkyl group with up to 8 C atoms, preferably 1 to 4 C atoms, and the radicals R , R and R which are not an alkyl group are hydrogen, which is characterised...

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Main Authors PAPE, FRANK-FRIEDRICH., 6700 LUDWIGSHAFEN, DE, LAUTERBACH, GERALD, GRAMLICH, WALTER., 6900 HEIDELBERG, DE
Format Patent
LanguageGerman
Published 22.03.1990
Subjects
ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
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Summary:Process for the preparation of alkyl-substituted cinnamaldehydes of the general formula I in which at least one of the radical R , R and R is an alkyl group with up to 8 C atoms, preferably 1 to 4 C atoms, and the radicals R , R and R which are not an alkyl group are hydrogen, which is characterised in that acetylene alcohols of the general formula II in which R , R and R have the abovementioned meaning, are heated in the presence of 55 to 98% strength aqueous formic acid.
Bibliography:Application Number: DE19883831713