CH86305A - Process for the preparation of 2-aminoanthraquinone. - Google Patents

Process for the preparation of 2-aminoanthraquinone.

Info

Publication number
CH86305A
CH86305A CH86305DA CH86305A CH 86305 A CH86305 A CH 86305A CH 86305D A CH86305D A CH 86305DA CH 86305 A CH86305 A CH 86305A
Authority
CH
Switzerland
Prior art keywords
preparation
aminoanthraquinone
parts
ammonia
calcium chloride
Prior art date
Application number
Other languages
German (de)
Inventor
A-G J R Geigy
Original Assignee
Geigy Ag J R
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 Geigy Ag J R filed Critical Geigy Ag J R
Publication of CH86305A publication Critical patent/CH86305A/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C225/00—Compounds containing amino groups and doubly—bound oxygen atoms bound to the same carbon skeleton, at least one of the doubly—bound oxygen atoms not being part of a —CHO group, e.g. amino ketones
    • C07C225/24—Compounds containing amino groups and doubly—bound oxygen atoms bound to the same carbon skeleton, at least one of the doubly—bound oxygen atoms not being part of a —CHO group, e.g. amino ketones the carbon skeleton containing carbon atoms of quinone rings
    • C07C225/26—Compounds containing amino groups and doubly—bound oxygen atoms bound to the same carbon skeleton, at least one of the doubly—bound oxygen atoms not being part of a —CHO group, e.g. amino ketones the carbon skeleton containing carbon atoms of quinone rings having amino groups bound to carbon atoms of quinone rings or of condensed ring systems containing quinone rings
    • C07C225/32—Compounds containing amino groups and doubly—bound oxygen atoms bound to the same carbon skeleton, at least one of the doubly—bound oxygen atoms not being part of a —CHO group, e.g. amino ketones the carbon skeleton containing carbon atoms of quinone rings having amino groups bound to carbon atoms of quinone rings or of condensed ring systems containing quinone rings of condensed quinone ring systems formed by at least three rings
    • C07C225/34—Amino anthraquinones

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

Description

  

  Verfahren zur Darstellung von     2-Aminoatithraehinon.       Es wurde gefunden, dass man     2-Amino-          anthrachinon    in guter Ausbeute aus     Anthra-          chitton-2-s(ilfosätrre.        Ammoniak    und Chlor  calcium dadurch gewinnen kann, dass man  diese Mischung unter Zusatz von Chlor  natrium unter Druck erhitzt.  



  <I>Beispiel:</I>  100 Teile     Anthrachinon-2-sulfosaures     Natrium werden mit 1000 Teilen konzen  triertem     wässrigem    Ammoniak     (ca.    23      /@ig),     60 Teilen kristallisiertem     Chlorcalcium    und  100 Teilen Chlornatrium     i    Stunden im       Autoklaven    auf<B>205"</B> erhitzt.

   Nach dem Er-    kalten wird der     Druckkesselinhalt        abfiltriert     und der rote Kristallbrei mit Wasser,     ver-          dünnter        Salzsäure    und     Sodalüsung        nach-          einander        ausgekocht.    Das trockene Produkt  ist     dann    reines     2-Aminoanthrachinon.    Aus  beute r 0      ;'o    der Theorie.



  Process for the preparation of 2-aminoatithraehinone. It has been found that 2-amino anthraquinone can be obtained in good yield from anthrachite-2-s (ilfosätrre. Ammonia and calcium chloride by heating this mixture under pressure with the addition of sodium chloride.



  <I> Example: </I> 100 parts of sodium anthraquinone-2-sulfonic acid are mixed with 1000 parts of concentrated aqueous ammonia (approx. 23% strength), 60 parts of crystallized calcium chloride and 100 parts of sodium chloride for 1 hour in an autoclave 205 "heated.

   After cooling, the contents of the pressure vessel are filtered off and the red crystal paste is boiled one after the other with water, diluted hydrochloric acid and soda solution. The dry product is then pure 2-aminoanthraquinone. From booty r 0; 'o the theory.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung von 2-Amino- anthrachitron, dadurch gekennzeichnet, dass Anthrachinorr-2-sulfos.iure mit Ammoniak und Chlorcalcium in Gegenwart von Chlornatrium unter Druck erhitzt wird. PATENT CLAIM: Process for the preparation of 2-amino anthrachitron, characterized in that anthraquinor-2-sulfos.iure is heated with ammonia and calcium chloride in the presence of sodium chloride under pressure.
CH86305D 1919-01-09 1919-01-09 Process for the preparation of 2-aminoanthraquinone. CH86305A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH82601T 1919-01-09
CH86305T 1919-01-09

Publications (1)

Publication Number Publication Date
CH86305A true CH86305A (en) 1920-08-16

Family

ID=25703072

Family Applications (1)

Application Number Title Priority Date Filing Date
CH86305D CH86305A (en) 1919-01-09 1919-01-09 Process for the preparation of 2-aminoanthraquinone.

Country Status (1)

Country Link
CH (1) CH86305A (en)

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