PROCESS FOR PREPARING 1,3-DISUBSTITUTED PYRAZOLECARBOXYLIC ESTERS

A process for preparing 1,3-disubstituted pyrazolecarboxylic esters of the formula (I) where X, Y, Z=hydrogen or halogen and R1=C1-C6-alkyl, by metering an enol ether of the formula III where R2 is C1-C6-alkyl at from (−41) to (−80)° C. into an alkyl hydrazine of the formula II H2N-NH-lower alkyl   ...

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Bibliographic Details
Main Authors KORADIN CHRISTOPHER, WOLF BERND, ZIERKE THOMAS, SMIDT SEBASTIAN PEER, MAYWALD VOLKER, RACK MICHAEL, KEIL MICHAEL
Format Patent
LanguageEnglish
Korean
Published 28.03.2011
Subjects
ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMISTRY
HETEROCYCLIC COMPOUNDS
METALLURGY
ORGANIC CHEMISTRY
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Summary:A process for preparing 1,3-disubstituted pyrazolecarboxylic esters of the formula (I) where X, Y, Z=hydrogen or halogen and R1=C1-C6-alkyl, by metering an enol ether of the formula III where R2 is C1-C6-alkyl at from (−41) to (−80)° C. into an alkyl hydrazine of the formula II H2N-NH-lower alkyl   (II).
Bibliography:Application Number: KR20117003765