CH177937A - Process for the preparation of a dichlorinated pyrenchinous. - Google Patents

Process for the preparation of a dichlorinated pyrenchinous.

Info

Publication number
CH177937A
CH177937A CH177937DA CH177937A CH 177937 A CH177937 A CH 177937A CH 177937D A CH177937D A CH 177937DA CH 177937 A CH177937 A CH 177937A
Authority
CH
Switzerland
Prior art keywords
dichlorinated
orange
pyrenquinone
preparation
pyrenchinous
Prior art date
Application number
Other languages
German (de)
Inventor
Gesellschaft Fuer Chemis Basel
Original Assignee
Chem Ind Basel
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 Chem Ind Basel filed Critical Chem Ind Basel
Publication of CH177937A publication Critical patent/CH177937A/en

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B57/00—Other synthetic dyes of known constitution
    • C09B57/001—Pyrene dyes

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

Description

  

  Verfahren zur Herstellung eines     dichlorierten        Pyrenchinons.       Es wurde gefunden, dass man ein     dichlo-          riertes        Pyrenchinon    herstellen kann, wenn man       Pyrenchinon    bei zwischen 100 und<B>150</B> "liegen  den Temperaturen in Gegenwart eines Lö  sungsmittels mit chlorierenden Mitteln be  handelt.  



  Das erhaltene     dichlorierte        Pyrenchinon     stellt ein     orangebraunes    Pulver dar, das aus  Nitrobenzol in     orangebraunen    Kristallen kri  stallisiert, deren Schmelzpunkt über 350    liegt. Es löst sich in konzentrierter Schwefel  säure mit brauner Farbe und gibt beim Be  handeln mit Alkalien und     Hydrosulfit    eine  orangegelb gefärbte     Küpe.    Das     dichlorierte          Pyrenchinon    stellt ein wertvolles Zwischen  produkt für die Herstellung von Farbstoffen dar.  



  Als chlorierende Mittel können beispiels  weise Chlor oder     Sulfurylchlorid    verwendet  werden. Als Lösungsmittel eignen sich z. B.       Trichlorbenzol,    Chlornaphthalin, Nitrobenzol  und     Tetrachloräthan.            Beispiel     <B>138</B> Teile     Pyrenchinon    werden in 1400  Volumenteilen     Trichlorbenzol    suspendiert und  während 4 Stunden bei 130-135   Chlor ein  geleitet.

   Hierauf wird zur Entfernung des     Tri-          chlorbenzols    die Reaktionsmasse     wasserdampf-          destilliert.    Im     Destillationskolben    bleibt das       dichlorierte        Pyrenchinon    zurück, das     abfil-          triert    und getrocknet wird.



  Process for the preparation of a dichlorinated pyrenequinone. It has been found that a dichlorinated pyrenquinone can be produced if pyrenquinone is treated at temperatures between 100 and 150 ”in the presence of a solvent with chlorinating agents.



  The dichlorinated pyrenquinone obtained is an orange-brown powder which crystallizes from nitrobenzene in orange-brown crystals, the melting point of which is above 350. It dissolves in concentrated sulfuric acid with a brown color and, when treated with alkalis and hydrosulfite, gives an orange-yellow colored vat. The dichlorinated pyrenquinone is a valuable intermediate product for the production of dyes.



  As chlorinating agents, for example, chlorine or sulfuryl chloride can be used. Suitable solvents are, for. B. trichlorobenzene, chloronaphthalene, nitrobenzene and tetrachloroethane. Example 138 parts of pyrenquinone are suspended in 1400 parts by volume of trichlorobenzene and passed in at 130-135 chlorine for 4 hours.

   The reaction mass is then steam distilled to remove the trichlorobenzene. The dichlorinated pyrenquinone remains in the distillation flask, which is filtered off and dried.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines dichlo- rierten Pyrenchinons, dadurch gekennzeichnet, dass man Pyrenchinon bei zwischen 100 und <B>150'</B> liegenden Temperaturen in Gegenwart eines Lösungsmittels mit chlorierenden Mitteln behandelt. Das erhaltene dichlorierte Pyrenchinon stellt ein orangebraunes Pulver dar, das aus Nitrobenzol in orangebraunen Kristallen kri stallisiert, deren Schmelzpunkt über 350 liegt. Claim: Process for the production of a dichlorinated pyrenequinone, characterized in that pyrenequinone is treated with chlorinating agents in the presence of a solvent at temperatures between 100 and 150 '. The dichlorinated pyrenquinone obtained is an orange-brown powder which crystallizes from nitrobenzene in orange-brown crystals, the melting point of which is above 350. Es löst sich in konzentrierter Schwefelsäure mit brauner Farbe und gibt beim Behandeln mit Alkalien und Hydrosulfit eine orangegelb gefärbte Küpe. Das dichlorierte Pyrenchinon stellt ein wertvolles Zwischenprodukt für die Herstellung von Farbstoffen dar. It dissolves in concentrated sulfuric acid with a brown color and, when treated with alkalis and hydrosulfite, gives an orange-yellow colored vat. The dichlorinated pyrenquinone is a valuable intermediate for the manufacture of dyes.
CH177937D 1934-07-07 1934-07-07 Process for the preparation of a dichlorinated pyrenchinous. CH177937A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH177937T 1934-07-07

Publications (1)

Publication Number Publication Date
CH177937A true CH177937A (en) 1935-06-30

Family

ID=4428139

Family Applications (1)

Application Number Title Priority Date Filing Date
CH177937D CH177937A (en) 1934-07-07 1934-07-07 Process for the preparation of a dichlorinated pyrenchinous.

Country Status (1)

Country Link
CH (1) CH177937A (en)

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