CH206720A - Process for the preparation of an indophenol-like compound of the naphthocarbazole series. - Google Patents

Process for the preparation of an indophenol-like compound of the naphthocarbazole series.

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Publication number
CH206720A
CH206720A CH206720DA CH206720A CH 206720 A CH206720 A CH 206720A CH 206720D A CH206720D A CH 206720DA CH 206720 A CH206720 A CH 206720A
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CH
Switzerland
Prior art keywords
compound
indophenol
series
naphthocarbazole
preparation
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 CH206720A publication Critical patent/CH206720A/en

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Description

  

      Verfahren    zur Herstellung einer     indophenolartigen    Verbindung  der     Naphthocarbazolreihe.       In der deutschen     Patentschrift    Nr.<B>558472</B>  wird die Darstellung von     Indophenolen        bezw.          Leukoindophenolen    aus     Naphthocarbazolen     durch Umsetzung mit     Chinonehlorimid    be  schrieben.

   Das Verfahren ist anwendbar auf  die     isomeren        Naphthocarbazole,    ihre     N-Alkyl-          derivate    und auf     Substitutionsproduktedieser     Verbindungen mit mindestens einer freien       para-Stellung    zum     Carbazolstickstoff.     



  Es wurde nun überraschenderweise gefun  den, dass das nach dem Verfahren der       deutsohen    Patentschrift Nr. 624563 aus 2. 2'  Diogy-1.1'-dinaphthyl durch Behandlung  mit Ammoniak     bezw.    primären Aminen bei  erhöhter Temperatur erhältliche     3.4.5.6-          Dinaphthocarbazol        (Fp.    159  ), aas keine  freie     para-Stellung    zum     Carbazolstickstoff     besitzt, ebenso wie seine     N-iSubstitutionspro-          dukte,    trotzdem mit     Chinonchlorimid,    sowie  auch mit     Nitrosophenol    unter Bildung blauer  Indokörper umgesetzt werden kann.

   Die    neuen Körper können für die Herstellung von  Farbstoffen Verwendung finden.  



  Das vorliegende Patent betrifft ein Ver  fahren zur Herstellung einer     indophenol-          artigen    Verbindung der     Naphthocarbazol-          reshe,    welches dadurch gekennzeichnet ist,  dass man     3.4.5.6-Dinaphthocarbazol    mit       p-Clhinonchlorimid    zur Umsetzung bringt.  Der so erhaltene Endstoff ist ein wertvolles       Zwischenprodukt    für die Herstellung von  Farbstoffen.  



  <I>Beispiel:</I>  13,8 Teile     3.4.5.6-Dinaphthocarbazol          werden    in 150     Volumteile    Schwefelsäure von  <B>66'</B>     Be    bei etwa<B>-10'</B> eingerührt und mit  einer auf gleiche Temperatur gekühlten Lö  sung von 10,6 Teilen     p-Chinonchlorimid    in  100     Volumteilen    Schwefelsäure versetzt;  dann wird kurze Zeit nachgerührt.

   Die tief  blaue Lösung kann entweder wie üblich  durch Austragen auf     Eis    aufgearbeitet wer-      den,     zweckmässiger    reduziert man beim Aus  giessen auf     Eis    durch Einstreuen von     Na-          triumhydrosulfit,    wobei sich die     Leukover-          bindung    in hellgelben Flocken ausscheidet.  Man saugt ab und     v#äscht    mit Wasser nach.



      Process for the preparation of an indophenol-like compound of the naphthocarbazole series. In the German patent specification no. <B> 558472 </B> the representation of indophenols respectively. Leucoindophenols from naphthocarbazoles by reaction with quinone chloride be written.

   The process can be applied to the isomeric naphthocarbazoles, their N-alkyl derivatives and to substitution products of these compounds with at least one free para position to the carbazole nitrogen.



  It has now been found, surprisingly, that the according to the method of German Patent No. 624563 from 2. 2 'Diogy-1.1'-dinaphthyl by treatment with ammonia or. 3,4,5,6-dinaphthocarbazole (melting point 159), which is obtainable at elevated temperature and which has no free para position to the carbazole nitrogen, as well as its N-i-substitution products, are nevertheless reacted with quinone chlorimide and also with nitrosophenol to form blue indo bodies can.

   The new bodies can be used to produce dyes.



  The present patent relates to a process for the preparation of an indophenol-like compound of naphthocarbazole reshe, which is characterized in that 3,4,5,6-dinaphthocarbazole is reacted with p-clhinonchlorimide. The end product obtained in this way is a valuable intermediate product for the manufacture of dyes.



  <I> Example: </I> 13.8 parts of 3.4.5.6-dinaphthocarbazole are stirred into 150 parts by volume of sulfuric acid of <B> 66 '</B> Be at about <B> -10' </B> and mixed with a At the same temperature cooled solution of 10.6 parts of p-quinone chlorimide in 100 parts by volume of sulfuric acid added; then stir for a short time.

   The deep blue solution can either be worked up as usual by pouring it onto ice; it is more expedient to reduce when pouring it onto ice by sprinkling in sodium hydrosulphite, the leuco compound being deposited in light yellow flakes. It is filtered off with suction and washed off with water.

 

Claims (1)

PATENTANSPRUCFI Verfahren zur Herstellung einer indo- phenolartigen Verbindung der Naphthocarba- zolreihe, dadureh gekennzeichnet, dass man das 8 . 4. 5 . 6-Dinaphthocarbazol mit p-Chi- nonchlorimid zur Umsetzung bringt. PATENT CLAIMS Process for the production of an indophenol-like compound of the naphthocarba- zole series, characterized in that the 8th 4. 5. Brings 6-dinaphthocarbazole with p-quinonchlorimide to implement. Das er haltene Kondensationsprodukt löst sich in konzentrierter Schwefelsäure mit tiefblauer Farbe und wird mit Natriumhydrosulfit als Leukoverbindung in hellgelben Flocken aus- uesehieden. The condensation product obtained dissolves in concentrated sulfuric acid with a deep blue color and is boiled out in light yellow flakes with sodium hydrosulfite as a leuco compound.
CH206720D 1938-04-13 1938-08-13 Process for the preparation of an indophenol-like compound of the naphthocarbazole series. CH206720A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE206720X 1938-04-13

Publications (1)

Publication Number Publication Date
CH206720A true CH206720A (en) 1939-08-31

Family

ID=5793296

Family Applications (1)

Application Number Title Priority Date Filing Date
CH206720D CH206720A (en) 1938-04-13 1938-08-13 Process for the preparation of an indophenol-like compound of the naphthocarbazole series.

Country Status (1)

Country Link
CH (1) CH206720A (en)

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