CH98312A - Process for the preparation of 2: 3 diaminoanthraquinone. - Google Patents

Process for the preparation of 2: 3 diaminoanthraquinone.

Info

Publication number
CH98312A
CH98312A CH98312DA CH98312A CH 98312 A CH98312 A CH 98312A CH 98312D A CH98312D A CH 98312DA CH 98312 A CH98312 A CH 98312A
Authority
CH
Switzerland
Prior art keywords
diaminoanthraquinone
preparation
ammonia
bromoanthraquinone
amino
Prior art date
Application number
Other languages
German (de)
Inventor
Gesellschaft Fuer Chemis Basel
Original Assignee
Chem Ind Basel
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 Chem Ind Basel filed Critical Chem Ind Basel
Publication of CH98312A publication Critical patent/CH98312A/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 Herstellung von     2:3-Diaminoanthrachinon.       Es wurde gefunden, dass man in sehr ein  facher Weise     2:3-Diaminoanthrachinon    her  stellen kann, wenn man     2-Amino-3-brom-          anthrachinon    mit ammoniakhaltigen Flüssig  keiten in einem geschlossenen Gefäss am  besten auf 170 bis 190   erhitzt.  



  Das so erhaltene 2:     3-Diaminoanthrachinon     ist sehr rein.  



       Beispiel:     125 Teile     2-Amino-3-bromanthrachinon     werden mit 1000 Teilen wässerigem;     28%igem     Ammoniak in einem mit Rührwerk     versehe-          nen        Autoklaven    24 Stunden auf 175 bis 185    erhitzt. Nach dem Erkalten wird das Reak  tionsgemisch abgesaugt, der Rückstand mit  heissem Wasser gewaschen und     getroeknet.     Man erhält in vortrefflicher Ausbeute ein    sehr reines, kristallinisches     2:3-Diamino-          anthrachinon.     



       Statt    wässeriges Ammoniak kann man       alkoholisches    Ammoniak benützen; .die Reak  tion kann auch in Gegenwart eines     Kataly-          sators,    wie zum Beispiel einer Kupferverbin  dung, durchgeführt werden.



  Process for the preparation of 2: 3 diaminoanthraquinone. It has been found that 2: 3-diaminoanthraquinone can be produced in a very simple manner if 2-amino-3-bromoanthraquinone with ammonia-containing liquids is best heated to 170 to 190 in a closed vessel.



  The 2: 3 diaminoanthraquinone thus obtained is very pure.



       Example: 125 parts of 2-amino-3-bromoanthraquinone are mixed with 1000 parts of aqueous; 28% ammonia in an autoclave equipped with a stirrer heated to 175 to 185 hours for 24 hours. After cooling, the reaction mixture is filtered off with suction, and the residue is washed with hot water and dried. A very pure, crystalline 2: 3 diamino anthraquinone is obtained in excellent yield.



       Instead of aqueous ammonia one can use alcoholic ammonia; The reaction can also be carried out in the presence of a catalyst, for example a copper compound.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung des 2:3-Di- aminoanthrachinons, dadurch gekennzeichnet, dass 2-Amino-3-bromanthrachinon in geschlos senem Gefäss mit ammoniakhaltigen Flüssig keiten erhitzt wird. PATENT CLAIM: Process for the production of 2: 3-di-aminoanthraquinone, characterized in that 2-amino-3-bromoanthraquinone is heated in a closed vessel with liquids containing ammonia.
CH98312D 1922-05-24 1922-05-24 Process for the preparation of 2: 3 diaminoanthraquinone. CH98312A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH98312T 1922-05-24

Publications (1)

Publication Number Publication Date
CH98312A true CH98312A (en) 1923-06-16

Family

ID=4356109

Family Applications (1)

Application Number Title Priority Date Filing Date
CH98312D CH98312A (en) 1922-05-24 1922-05-24 Process for the preparation of 2: 3 diaminoanthraquinone.

Country Status (1)

Country Link
CH (1) CH98312A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2519941A (en) * 1947-05-27 1950-08-22 Ajax Engineering Corp Installation for the measurement and the control of the temperature in a metal melting and particularly in a submerged resistor type induction furnace

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2519941A (en) * 1947-05-27 1950-08-22 Ajax Engineering Corp Installation for the measurement and the control of the temperature in a metal melting and particularly in a submerged resistor type induction furnace

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