METHOD OF PRODUCING FLUORINE-CONTAINING PYRAZOLE CARBOXYLIC ACID HALIDE

METHOD OF PRODUCING FLUORINE-CONTAINING PYRAZOLE CARBOXYLIC ACID HALIDE

The present invention provides a method capable of more simply and efficiently producing fluorine-containing pyrazolecarboxylic acid halides useful as pharmaceutical or agrochemical intermediates.The present invention relates to a method of producing a compound represented by the formula (a), which...

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Bibliographische Detailangaben
Hauptverfasser: SHIMIZU, Tamaki, YOKOKOJI, Osamu, ISHIBASHI, Yuichiro, MATSUMURA, Yasushi
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
CHEMISTRY
HETEROCYCLIC COMPOUNDS
METALLURGY
ORGANIC CHEMISTRY
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Beschreibung
Zusammenfassung:The present invention provides a method capable of more simply and efficiently producing fluorine-containing pyrazolecarboxylic acid halides useful as pharmaceutical or agrochemical intermediates.The present invention relates to a method of producing a compound represented by the formula (a), which comprises reacting a compound represented by the formula (c) with a halogenating agent in a non-aqueous system;whereinRis a fluoroalkyl group having 1 to 3 carbon atoms,Ris a hydrogen atom or an alkyl group having 1 to 6 carbon atoms,Ris an alkyl group having 1 to 6 carbon atoms, andX is a halogen atom.