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CH82601A - Process for the preparation of 2-aminoanthraquinone - Google Patents

Process for the preparation of 2-aminoanthraquinone

Info

Publication number
CH82601A
CH82601A CH82601A CH82601DA CH82601A CH 82601 A CH82601 A CH 82601A CH 82601 A CH82601 A CH 82601A CH 82601D A CH82601D A CH 82601DA CH 82601 A CH82601 A CH 82601A
Authority
CH
Switzerland
Prior art keywords
preparation
aminoanthraquinone
anthraquinone
parts
calcium chloride
Prior art date
Application number
CH82601A
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 CH82601A publication Critical patent/CH82601A/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

Landscapes

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

Description

  

      Verfahren    zur Darstellung von     2-aminoanthrachinon.       Es wurde gefunden, dass man 2     _amino-          anthrachinon    in guter Ausbeute aus An  thrachinon - 2 -     sulfosäure,    Ammoniak und       Chlorcalcium        dadurch    gewinnen kann, dass  man diese Mischung unter Zusatz von Chlor  magnesium unter Druck erhitzt.  



  <I>Beispiel:</I>  100 Teile     anthrachinon-2-sulfosaures    Na  trium werden mit 1000 Teilen konzentrier  tem wässerigem Ammoniak (ca. 23     %ig),    60  Teilen kristallisiertem     Chlorcalcium    und     100     Teilen Chlormagnesium sieben Stunden     ini          Autoklaven    auf<B>2051</B> erhitzt. Nach dem Er-    kalten wird der     Druckkesselinhalt        abfiltriert     und der rote Kristallbrei mit Wasser, ver  dünnter Salzsäure und     Sodalösung    nachein  ander ausgekocht. Das trockene Produkt ist  dann reines     2-Aminoanthrachitton.    Ausbeute  80 % der Theorie.



      Process for the preparation of 2-aminoanthraquinone. It has been found that 2-amino anthraquinone can be obtained in good yield from anthrachinone-2-sulfonic acid, ammonia and calcium chloride by heating this mixture under pressure with the addition of magnesium chlorine.



  <I> Example: </I> 100 parts of anthraquinone-2-sulphonic acid are mixed with 1000 parts of concentrated aqueous ammonia (approx. 23%), 60 parts of crystallized calcium chloride and 100 parts of magnesium chloride for seven hours in an autoclave 2051 </B> 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-aminoanthrachite. Yield 80% of theory.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung von 2-Amino- anthrachinon, dadurch gekennzeichnet, dass Anthrachinon-2-sulfosäure mit Ammoniak und Chlorcalcium in Gegenwart von Chlor magnesium unter Druck erhitzt wird. PATENT CLAIM: Process for the preparation of 2-amino anthraquinone, characterized in that anthraquinone-2-sulfonic acid is heated under pressure with ammonia and calcium chloride in the presence of magnesium chlorine.
CH82601A 1919-01-09 1919-01-09 Process for the preparation of 2-aminoanthraquinone CH82601A (en)

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
CH82601A true CH82601A (en) 1920-03-01

Family

ID=4337606

Family Applications (1)

Application Number Title Priority Date Filing Date
CH82601A CH82601A (en) 1919-01-09 1919-01-09 Process for the preparation of 2-aminoanthraquinone

Country Status (1)

Country Link
CH (1) CH82601A (en)

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