PROCESS FOR PRODUCING 4-ACYL-AMIDO-4,4-DICARBOXY- BUTANAL PHENYL HYDRAZONE

The present invention provides a process for producing 4-acyl-amido-4,4-dicarbalkoxy-butanal-phenyl hydrazone by adding an acyl-amido-malonic ester to acrolein in the presence of a catalyst and by subsequently reacting the 4-acyl-amido-4,4-dicarbalkoxy-butanal with phenyl hydrazine, the improvement...

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Bibliographic Details
Main Authors WEIGEL, HORST, OFFERMANNS, HERIBERT
Format Patent
LanguageEnglish
Published 20.01.1981
Subjects
ACYCLIC OR CARBOCYCLIC COMPOUNDS
APPARATUS THEREFOR
CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY
CHEMISTRY
GENERAL METHODS OF ORGANIC CHEMISTRY
HETEROCYCLIC COMPOUNDS
METALLURGY
ORGANIC CHEMISTRY
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
THEIR RELEVANT APPARATUS
TRANSPORTING
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Summary:The present invention provides a process for producing 4-acyl-amido-4,4-dicarbalkoxy-butanal-phenyl hydrazone by adding an acyl-amido-malonic ester to acrolein in the presence of a catalyst and by subsequently reacting the 4-acyl-amido-4,4-dicarbalkoxy-butanal with phenyl hydrazine, the improvement in which the acyl-amido-malonic ester is added in the presence of at least one alkali metal salt of a carboxylic acid as the catalyst.
Bibliography:Application Number: CA19770284270