Process for preparing N-substituted 3-hydroxypyrazoles

N-substituovan 3-hydroxypyrazoly vzorce I, ve kter m znamen R.sup.1.n. n kter² ze substituent alkyl, aryl nebo heteroaryl, R.sup.2.n., R.sup.3.n. vod k, halogen, kyanov skupina nebo n kter² ze substituent alkyl, aryl nebo heteroaryl, se p°ipravuj oxidac odpov daj c ho pyrazolidin-3-onu.\ In the pres...

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Bibliographic Details
Main Authors KONIG HARTMANN DR, GOTZ NORBERT DR, ELLER KARSTEN DR, KLEIN ULRICH DR
Format Patent
LanguageCzech
English
Published 17.10.2001
Edition7
Subjects
CHEMISTRY
HETEROCYCLIC COMPOUNDS
METALLURGY
ORGANIC CHEMISTRY
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Summary:N-substituovan 3-hydroxypyrazoly vzorce I, ve kter m znamen R.sup.1.n. n kter² ze substituent alkyl, aryl nebo heteroaryl, R.sup.2.n., R.sup.3.n. vod k, halogen, kyanov skupina nebo n kter² ze substituent alkyl, aryl nebo heteroaryl, se p°ipravuj oxidac odpov daj c ho pyrazolidin-3-onu.\ In the present invention there are disclosed N-substituted 3-hydroxypyrazoles of the general formula I, in which Re1 represents some of the substituent being selected from a group comprising alkyl, aryl or heteroaryl, Re2, Re3 are hydrogen, halogen, a cyano group or some of the substituents being selected from a group comprising alkyl, aryl or heteroaryl. The invented compounds are prepared by oxidation of a corresponding pyrazolidin-3-one.
Bibliography:Application Number: CZ19980000074