CH201179A - Process for the preparation of an azole compound. - Google Patents

Process for the preparation of an azole compound.

Info

Publication number
CH201179A
CH201179A CH201179DA CH201179A CH 201179 A CH201179 A CH 201179A CH 201179D A CH201179D A CH 201179DA CH 201179 A CH201179 A CH 201179A
Authority
CH
Switzerland
Prior art keywords
preparation
azole compound
benzimidazole
recrystallization
dyes
Prior art date
Application number
Other languages
German (de)
Inventor
Aktiengesellsc Farbenindustrie
Original Assignee
Ig Farbenindustrie Ag
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Ig Farbenindustrie Ag filed Critical Ig Farbenindustrie Ag
Publication of CH201179A publication Critical patent/CH201179A/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D235/00—Heterocyclic compounds containing 1,3-diazole or hydrogenated 1,3-diazole rings, condensed with other rings
    • C07D235/02—Heterocyclic compounds containing 1,3-diazole or hydrogenated 1,3-diazole rings, condensed with other rings condensed with carbocyclic rings or ring systems
    • C07D235/04—Benzimidazoles; Hydrogenated benzimidazoles
    • C07D235/20—Two benzimidazolyl-2 radicals linked together directly or via a hydrocarbon or substituted hydrocarbon radical

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Preventing Corrosion Or Incrustation Of Metals (AREA)
  • Plural Heterocyclic Compounds (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)

Description

  

  Verfahren zur Darstellung einer     Azolverbindung.       Vorliegendes Patent bezieht sich auf ein  Verfahren zur Darstellung einer     Azolverbin-          dung,    welches dadurch gekennzeichnet ist,  dass man     N-Methyl-benzimidazol    mit einem  Kupfersalz einer organischen Säure behandelt.  



  Das neue Kondensationsprodukt wird  durch     Umkristallisieren    aus     Pyridin    in farb  losen Kristallen vom     Fp.   <B>2060</B> C erhalten.  Es besitzt die     Konstitution    eines N,     N'-Di-          methyl-bis-benzimidazols    von der Formel:  
EMI0001.0011     
    mit der auch die Analysenwerte im Einklang  stehen. Es soll als     Zwiscbenprodukt    zur Her  stellung von Farbstoffen Verwendung finden.

         Beispiel:     6 Teile     N-112ethyl-benzimidazol,    herge  stellt zum Beispiel gemäss Berichte 22, S. 644,  werden in etwa 60 Teilen technischem     Tri-          chlorbenzol    unter Zugabe von 9 Teilen Kupfer  acetat kurze Zeit zum Sieden erhitzt. Durch    Abkühlen und Verdünnen des Gemisches mit  Benzin scheidet sich das Reaktionsprodukt ab.



  Process for the preparation of an azole compound. The present patent relates to a process for the preparation of an azole compound, which is characterized in that N-methyl-benzimidazole is treated with a copper salt of an organic acid.



  The new condensation product is obtained by recrystallization from pyridine in colorless crystals with a melting point of 2060 C. It has the constitution of an N, N'-dimethyl-bis-benzimidazole of the formula:
EMI0001.0011
    with which the analytical values are also consistent. It should be used as an intermediate product for the manufacture of dyes.

         Example: 6 parts of N-112ethylbenzimidazole, produced for example according to Reports 22, p. 644, are briefly heated to the boil in about 60 parts of technical grade trichlorobenzene with the addition of 9 parts of copper acetate. The reaction product separates out by cooling the mixture and diluting it with gasoline.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung einer Azolver- bindung, dadurch gekennzeichnet, dass man N-Methyl-benzimidazol mit einem Kupfersalz einer organischen Säure behandelt. Das neue Kondensationsproduktwirddurch Umkristallisieren aus Pyridin in farblosen Kristallen vom Fp. <B>2060</B> C erhalten. PATENT CLAIM: Process for the preparation of an azole compound, characterized in that N-methyl-benzimidazole is treated with a copper salt of an organic acid. The new condensation product is obtained by recrystallization from pyridine in colorless crystals of m.p. 2060 C. Es be sitzt die Konstitution eines N, N-Dimethyl- bis-benzimidazols von der Formel: EMI0001.0027 mit der auch die Analysenwerte im Ein klang stehen. 'Es soll als Zwischenprodukt zur Herstellung von Farbstoffen Verwendung finden. It has the constitution of an N, N-dimethyl bis-benzimidazole of the formula: EMI0001.0027 with which the analysis values are also in line. 'It should be used as an intermediate in the manufacture of dyes.
CH201179D 1936-02-28 1937-02-19 Process for the preparation of an azole compound. CH201179A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE201179X 1936-02-28
CH195323T 1937-02-19

Publications (1)

Publication Number Publication Date
CH201179A true CH201179A (en) 1938-11-15

Family

ID=25722742

Family Applications (1)

Application Number Title Priority Date Filing Date
CH201179D CH201179A (en) 1936-02-28 1937-02-19 Process for the preparation of an azole compound.

Country Status (1)

Country Link
CH (1) CH201179A (en)

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