CH190612A - Process for the preparation of a heterocyclic condensation product. - Google Patents

Process for the preparation of a heterocyclic condensation product.

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Publication number
CH190612A
CH190612A CH190612DA CH190612A CH 190612 A CH190612 A CH 190612A CH 190612D A CH190612D A CH 190612DA CH 190612 A CH190612 A CH 190612A
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CH
Switzerland
Prior art keywords
condensation product
preparation
heterocyclic condensation
heterocyclic
aniline
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 CH190612A publication Critical patent/CH190612A/en

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Description

  

      Verfahren    zur Herstellung eines     heterocyklischen    Kondensationsproduktes.    Vorliegendes Patent bezieht sich auf ein  Verfahren zur     Herstellung    eines     heterocykli-          schen    Kondensationsproduktes, dadurch ge  kennzeichnet, dass man     4.5-Benzothionaph-          thenchinon    mit Anilin     inn    Gegenwart einer  Mineralsäure auf höhere Temperaturen er  hitzt.  



  Das so erhaltene neue Kondensations  produkt kristallisiert aus     Monoehlorbenzol     in Form     grünlichgelber    mikroskopischer Kri  stalle, die oberhalb 300   C schmelzen, es ist  in Säuren löslich und enthält zwei     diazotier-          bare        Aminogruppen.    Es soll als     Zwischen-          produkt    zur Herstellung von     Farbstoffen    und       pharmazeutischen        Produkten    Verwendung  finden.  



  <I>Beispiel:</I>  34 kg 4. 5 -     Benzo    -     thionaphthenchinon     werden mit 66 kg Anilin und     3,0        Liter    ver  dünnte Schwefelsäure oder Salzsäure im       Rührautoklaven    auf 140 bis<B>150'</B> C erhitzt  und während     mehrerer    Stunden bei dieser  Temperatur gehalten. Dann wird das Reak  tionsprodukt     sodaalkalisch    gestellt und der         Anilinüberschuss    mit Wasserdampf abgebla  sen. Der Rückstand wird abgesaugt, in ver  dünnter Salzsäure     ,gelöst,        filtriert    und mit  Alkali     wieder    abgeschieden.



      Process for the preparation of a heterocyclic condensation product. The present patent relates to a process for the production of a heterocyclic condensation product, characterized in that 4,5-benzothionaphthenequinone is heated to higher temperatures with aniline in the presence of a mineral acid.



  The new condensation product obtained in this way crystallizes from monochlorobenzene in the form of greenish-yellow microscopic crystals which melt above 300 ° C., it is soluble in acids and contains two diazotizable amino groups. It is intended to be used as an intermediate product in the manufacture of dyes and pharmaceutical products.



  <I> Example: </I> 34 kg 4. 5 - benzothionaphthenquinone are heated with 66 kg aniline and 3.0 liters of dilute sulfuric acid or hydrochloric acid in a stirred autoclave to 140 to <B> 150 '</B> C and kept at this temperature for several hours. Then the reaction product is made alkaline with soda and the excess aniline is blown off with steam. The residue is filtered off with suction, dissolved in dilute hydrochloric acid, filtered and precipitated again with alkali.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines hetero- cyklischen Kondensationsproduktes, dadurch gekennzeichnet, dass man 4.5-Benzothionaph- thenchinon mit Anilin in Gegenwart einer Mineralsäure auf höhere Temperaturen er hitzt. PATENT CLAIM: Process for the production of a heterocyclic condensation product, characterized in that 4,5-benzothionaphthenquinone is heated to higher temperatures with aniline in the presence of a mineral acid. Das so erhaltene neue Kondensationspro dukt kristallisiert aus Monochlorbenzol in Form grünlichgelber mikroskopischer Kri- stalle,,die oberhalb<B>300'</B> C schmelzen, es ist in Säuren löslich und enthält zwei diazotier- bare Aminogruppen. Es soll als Zwischen- produkt bei der Herstellung von Farbstoffen und pharmazeutischen Produkten Verwen dung finden. , The new condensation product obtained in this way crystallizes from monochlorobenzene in the form of greenish-yellow microscopic crystals which melt above <B> 300 '</B> C, it is soluble in acids and contains two diazotizable amino groups. It is to be used as an intermediate product in the manufacture of dyes and pharmaceutical products. ,
CH190612D 1935-01-30 1935-12-28 Process for the preparation of a heterocyclic condensation product. CH190612A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE190612X 1935-01-30
CH186844T 1935-12-28

Publications (1)

Publication Number Publication Date
CH190612A true CH190612A (en) 1937-04-30

Family

ID=25721418

Family Applications (1)

Application Number Title Priority Date Filing Date
CH190612D CH190612A (en) 1935-01-30 1935-12-28 Process for the preparation of a heterocyclic condensation product.

Country Status (1)

Country Link
CH (1) CH190612A (en)

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