CA2209486C - Procede de preparation de 3,5-diarylparazolene - Google Patents

Procede de preparation de 3,5-diarylparazolene Download PDF

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Publication number
CA2209486C
CA2209486C CA002209486A CA2209486A CA2209486C CA 2209486 C CA2209486 C CA 2209486C CA 002209486 A CA002209486 A CA 002209486A CA 2209486 A CA2209486 A CA 2209486A CA 2209486 C CA2209486 C CA 2209486C
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CA
Canada
Prior art keywords
parts
mol
reaction
sulfuric acid
iodine
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CA002209486A
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English (en)
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CA2209486A1 (fr
Inventor
Hans Rupert Merkle
Erich Fretschner
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BASF SE
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BASF SE
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Filing date
Publication date
Priority claimed from DE19500838A external-priority patent/DE19500838A1/de
Application filed by BASF SE filed Critical BASF SE
Publication of CA2209486A1 publication Critical patent/CA2209486A1/fr
Application granted granted Critical
Publication of CA2209486C publication Critical patent/CA2209486C/fr
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D231/00Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings
    • C07D231/02Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings not condensed with other rings
    • C07D231/10Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members
    • C07D231/12Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members with only hydrogen atoms, hydrocarbon or substituted hydrocarbon radicals, directly attached to ring carbon atoms

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)

Abstract

L'invention concerne un procédé de préparation de 3,5-diarylpyrazolène de la formule générale (I) dans laquelle les substituants ont la notation suivante: R<1> et R<3> désignent des restes aryle éventuellement substitués, R<2> désigne hydrogène, alkyle C1-C8 et aryle éventuellement substitué. On fait réagir de l'hydrate d'hydrazine avec du 1,3-diarylpropénonène de la formule générale (II), dans laquelle les substituants R<1>, R<2> et R<3> ont la notation mentionnée ci-dessus, dans de l'acide sulfurique en présence d'iode ou d'un composé iodé.
CA002209486A 1995-01-13 1996-01-04 Procede de preparation de 3,5-diarylparazolene Expired - Fee Related CA2209486C (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19500838A DE19500838A1 (de) 1995-01-13 1995-01-13 Verfahren zur Herstellung von 3,5-Diarylpyrazolen
DE19500838.3 1995-01-13
PCT/EP1996/000011 WO1996021650A1 (fr) 1995-01-13 1996-01-04 Procede de preparation de 3,5-diarylparazolene

Publications (2)

Publication Number Publication Date
CA2209486A1 CA2209486A1 (fr) 1996-07-18
CA2209486C true CA2209486C (fr) 2007-06-26

Family

ID=38279037

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002209486A Expired - Fee Related CA2209486C (fr) 1995-01-13 1996-01-04 Procede de preparation de 3,5-diarylparazolene

Country Status (1)

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CA (1) CA2209486C (fr)

Also Published As

Publication number Publication date
CA2209486A1 (fr) 1996-07-18

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