PROCEDE POUR LA PREPARATION DES ACYLHYDRAZONES DE L'ESTER DE L'ACIDE PHORMYLACETIQUE

A process is provided for production of acylhydrazones of formyl-acetic acid ester of the general formula wherein R1 is an alkyl group with from 1 to 6 carbon atoms and R2 is an alkoxy group or an amino group. A propiolic acid ester of the general formula H-C 3BOND C-COOR1 is contacted with hydrazin...

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Bibliographic Details
Main Author KRUGER,HANS R.,DE
Format Patent
LanguageFrench
Romanian
Published 29.04.1983
Subjects
ACYCLIC OR CARBOCYCLIC COMPOUNDS
AGRICULTURE
ANIMAL HUSBANDRY
BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES, AS HERBICIDES
CHEMISTRY
FISHING
FORESTRY
HETEROCYCLIC COMPOUNDS
HUMAN NECESSITIES
HUNTING
METALLURGY
ORGANIC CHEMISTRY
PEST REPELLANTS OR ATTRACTANTS
PLANT GROWTH REGULATORS
PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTSTHEREOF
TRAPPING
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Summary:A process is provided for production of acylhydrazones of formyl-acetic acid ester of the general formula wherein R1 is an alkyl group with from 1 to 6 carbon atoms and R2 is an alkoxy group or an amino group. A propiolic acid ester of the general formula H-C 3BOND C-COOR1 is contacted with hydrazine derivatives of the general formula H2N-NH-CO-R2 in the presence of a solvent such as water or a lower alcohol. The resulting products are technically valuable starting materials for the production of biocides, for example of 1,2,3-thiadiazole derivatives.
Bibliography:Application Number: RO19800102391