CH116502A - Process for the preparation of a derivative of 2-aminoanthraquinone. - Google Patents

Process for the preparation of a derivative of 2-aminoanthraquinone.

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Publication number
CH116502A
CH116502A CH116502DA CH116502A CH 116502 A CH116502 A CH 116502A CH 116502D A CH116502D A CH 116502DA CH 116502 A CH116502 A CH 116502A
Authority
CH
Switzerland
Prior art keywords
aminoanthraquinone
derivative
preparation
allowed
solution
Prior art date
Application number
Other languages
German (de)
Inventor
A-G Durand Huguenin
Original Assignee
Durand & Huguenin 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 Durand & Huguenin Ag filed Critical Durand & Huguenin Ag
Publication of CH116502A publication Critical patent/CH116502A/en

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  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

  

  Verfahren zur Darstellung eines Derivates von     2-Aminoanthrachinon.       Im Hauptpatent wird ein Verfahren zur  Herstellung der in Form eines     Alkalisalzes     leicht wasserlöslichen     Sulfaminsäureverbin-          dung    von     1:4-Diaminoanthrachinon    beschrie  ben, bei welchem man auf     1:4-Diamino-          anthrachinon        Schwefelsäureanhydrid    oder sol  ches abgebende Substanzen in Gegenwart  einer tertiären Base einwirken lässt.  



  Es wurde nun gefunden, dass man in die  sem Verfahren an Stelle von     1:4-Diamino-          anthrachinon    auch     2-Aminoanthrachinon    ver  wenden kann. Es wird so die     Sulfaminsäure-          verbindung    von     2-Aminoanthrachinon    erhalten.  <I>Beispiel:</I>  In eine Lösung von 120     gr        Dimethyl-          anilin    in 800     gr    Chlorbenzol werden unter  Rühren 110     gr        Chlorsulfonsäure        eintropfen     gelassen.

   Zu dem so hergestellten Additions  produkt wird eine feine Aufschlämmung von  112     gr        2-Aminoanthrachinon    in 500     gr        Di-          methylanilin    zugegeben. Das Ganze wird 3  Stunden bei 40   C durchgerührt.  



  Nach dieser Zeit werden 200     gr    Soda  zugegeben und mit Wasserdampf destilliert,  wodurch     Dimethylanilin    und Chlorbenzol aus  der Reaktionsmasse entfernt werden. Die zu-    rückbleibende Flüssigkeit wird noch heiss  filtriert und unter Rühren erkalten gelassen.  Die gebildete     Sulfaminsäure    von     2-Arnino-          anthrachinon    kristallisiert als     Natriumsalz     aus. Dieser Körper ist in warmem Wasser  leicht mit gelbbrauner Farbe löslich. Aus  dieser Lösung lässt sich durch Zugabe von  Mineralsäure und Kochen das     2-Aminoanthra-          chinon    als orangefarbener Niederschlag aus  fällen.



  Process for the preparation of a derivative of 2-aminoanthraquinone. The main patent describes a process for producing the sulfamic acid compound of 1: 4-diaminoanthraquinone, which is readily water-soluble in the form of an alkali salt, in which sulfuric acid anhydride or such releasing substances are allowed to act on 1: 4-diaminoanthraquinone in the presence of a tertiary base .



  It has now been found that in this process, 2-aminoanthraquinone can also be used instead of 1: 4-diaminoanthraquinone. The sulfamic acid compound of 2-aminoanthraquinone is obtained in this way. <I> Example: </I> 110 g of chlorosulfonic acid are added dropwise to a solution of 120 g of dimethyl aniline in 800 g of chlorobenzene while stirring.

   A fine slurry of 112 grams of 2-aminoanthraquinone in 500 grams of dimethylaniline is added to the addition product thus prepared. The whole thing is stirred at 40 ° C. for 3 hours.



  After this time, 200 g of soda are added and the mixture is distilled with steam, whereby dimethylaniline and chlorobenzene are removed from the reaction mass. The liquid that remains is filtered while still hot and allowed to cool while stirring. The sulfamic acid formed by 2-amino anthraquinone crystallizes out as the sodium salt. This body is easily soluble in warm water with a yellow-brown color. The 2-aminoanthraquinone can be precipitated as an orange precipitate from this solution by adding mineral acid and boiling.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung der Sulfamin- säureverbirrdung von 2-Aminoanthrachinon, dadurch gekennzeichnet, dass man Schwefel säureanhydrid oder solches abgebende Sub stanzen auf 2-Aminoanthrachinon in Gegen wart einer tertiären Base einwirken lässt. Der so erhaltene Körper ist in Form eines Alkalisalzes in warmem Wasser leicht mit gelbbrauner Farbe löslich. Aus dieser Lösung lässt sich durch Zugabe von Mineralsäure und Kochen das 2-Aminoanthrachinon als orangefarbener Niederschlag ausfällen. PATENT CLAIM: Process for the production of sulfamic acid compound of 2-aminoanthraquinone, characterized in that sulfuric acid anhydride or such releasing substances are allowed to act on 2-aminoanthraquinone in the presence of a tertiary base. The body obtained in this way is easily soluble in the form of an alkali salt in warm water with a yellow-brown color. The 2-aminoanthraquinone can be precipitated as an orange precipitate from this solution by adding mineral acid and boiling.
CH116502D 1924-03-07 1925-03-07 Process for the preparation of a derivative of 2-aminoanthraquinone. CH116502A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE116502X 1924-03-07
CH114914T 1926-05-17

Publications (1)

Publication Number Publication Date
CH116502A true CH116502A (en) 1926-09-01

Family

ID=25708403

Family Applications (1)

Application Number Title Priority Date Filing Date
CH116502D CH116502A (en) 1924-03-07 1925-03-07 Process for the preparation of a derivative of 2-aminoanthraquinone.

Country Status (1)

Country Link
CH (1) CH116502A (en)

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