METHOD FOR PRODUCING N-SUBSTITUTED 3-HYDROXYPYRAZOLES

METHOD FOR PRODUCING N-SUBSTITUTED 3-HYDROXYPYRAZOLES

The invention relates to a method for producing n-substituted 3-hydroxypyrazoles of formula (I), wherein R1 stands for optionally substituted alkyl, alkenyl, alkinyl, cycloalkyl, aryl or heteroaryl and R2 and R3 mean hydrogen, cyano, halogen and optionally substituted alkyl, alkenyl, alkinyl, cycloa...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: RACK, MICHAEL, VOGELBACHER, UWE JOSEF, KEIL, MICHAEL, WINGERT, HORST, GOTZ, ROLAND, KONIG, HARTMANN, TELES, JOAQUIM HENRIQUE, WAHL, JOSEF, KLINTZ, RALF
Format: Patent
Sprache:eng ; fre
Schlagworte:
CHEMISTRY
HETEROCYCLIC COMPOUNDS
METALLURGY
ORGANIC CHEMISTRY
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Beschreibung
Zusammenfassung:The invention relates to a method for producing n-substituted 3-hydroxypyrazoles of formula (I), wherein R1 stands for optionally substituted alkyl, alkenyl, alkinyl, cycloalkyl, aryl or heteroaryl and R2 and R3 mean hydrogen, cyano, halogen and optionally substituted alkyl, alkenyl, alkinyl, cycloalkyl, aryl or heteroaryl, by oxidizing a corresponding pyrazolidin-3-ons.