CH190037A - Process for the production of an anthraquinone derivative. - Google Patents

Process for the production of an anthraquinone derivative.

Info

Publication number
CH190037A
CH190037A CH190037DA CH190037A CH 190037 A CH190037 A CH 190037A CH 190037D A CH190037D A CH 190037DA CH 190037 A CH190037 A CH 190037A
Authority
CH
Switzerland
Prior art keywords
production
carried out
anthraquinone derivative
color
derivative
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 CH190037A publication Critical patent/CH190037A/en

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  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

  

  Verfahren zur Herstellung eines     Anthraehinonderivates.            Gegenstand    vorliegender Erfindung     ist     ein Verfahren zur     Herstellung    eines     Anthra-          chinonderivates,    durch     Einwirkung    von Ha  logenwasserstoff abspaltenden     Mitteln    auf  1 . 2'-     Naphthylamino    - 2 -     bromauthrachinon.     Als Halogenwasserstoff abspaltendes Mittel  sei     Kaliumcarbonat    oder     Alkalihydroxyd    ge  nannt.

   Die Reaktion wird zweckmässig in  einem Lösungsmittel wie Nitrobenzol,     Kre-          sol,        Benzylalkohol    oder einem     aliphatischen     Alkohol wie     N-Butylalkohol    oder     Amyl-          alkohol    oder     Glykol    durchgeführt. Die Ab  spaltung von Halogenwasserstoff kann durch  Zusatz kleiner Mengen Kupfer oder eines  Kupfersalzes     beschleunigt    werden.  



  Das erhältliche Umsetzungsprodukt ist  orange gefärbt und löst sich in konzentrier  ter Schwefelsäure mit     zunächst    grünlich  blauer, dann rein blauer Farbe. Es soll als       Küpenfarbstoff    und als     Zwischenprodukt    für  die Herstellung anderer Verbindungen (z. B.       Sulfierungsprodukte    oder saure Schwefel-    Säureester der     Leukoverbindungen)    ange  wandt werden.  



  <I>Beispiel:</I>  10 Gewichtsteile     1.2'-Naphthylamino-          2,bromanthrachinön    und 2,5 Gewichtsteile       Kaliumcarbonat    werden in 100 Gewichts  teilen siedenden     Nitrobenzols    ungefähr 3  Stunden gerührt. Die nach dem Erkalten  isolierte     Abscheidung    besteht aus     orangen     Kristallen, die sich in konzentrierter Schwe  felsäure     erst    mit     grünstichig    blauer, bald  reiner blau werdenden Farbe lösen. Wahr  scheinlich liegt das 1.     2-Phthaloyl-5.    ,6  benzoearbazol vor.



  Process for the preparation of an anthraquinone derivative. The present invention relates to a process for the production of an anthrachinone derivative by the action of agents which split off hydrogen halide on 1. 2'-naphthylamino-2-bromoauthraquinone. Potassium carbonate or alkali metal hydroxide may be mentioned as an agent which splits off hydrogen halide.

   The reaction is expediently carried out in a solvent such as nitrobenzene, creole, benzyl alcohol or an aliphatic alcohol such as n-butyl alcohol or amyl alcohol or glycol. The elimination of hydrogen halide can be accelerated by adding small amounts of copper or a copper salt.



  The available reaction product is orange in color and dissolves in concentrated sulfuric acid with an initially greenish blue, then a purely blue color. It should be used as a vat dye and as an intermediate for the production of other compounds (e.g. sulphonation products or acidic sulfuric acid esters of leuco compounds).



  <I> Example: </I> 10 parts by weight of 1,2'-naphthylamino-2, bromanthraquinone and 2.5 parts by weight of potassium carbonate are stirred in 100 parts by weight of boiling nitrobenzene for about 3 hours. The deposit, isolated after cooling, consists of orange crystals that dissolve in concentrated sulfuric acid first with a greenish blue color that soon becomes pure blue. Probably the 1. 2-phthaloyl-5. , 6 benzoearbazole before.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines Anthra- chinonderivates, dadurch gekennzeichnet, dass man Halogenwasserstoff abspaltende Mittel auf 1.2'-Naphthylamino-2-bromanthrachinon einwirken lässt. Das erhältliche Umsetzungsprodukt ist orange gefärbt und löst sich in konzentrier ter Schwefelsäure mit zunächst grünlich blauer, dann .rein blauer Farbe. UNTERAN SPRtrCHE 1. Verfahren nach Patentanspruch, dadurch gekennzeichnet, dass in Gegenwart eines Lösungsmittels gearbeitet wird. 2. PATENT CLAIM: Process for the production of an anthrachinone derivative, characterized in that agents which split off hydrogen halide are allowed to act on 1,2'-naphthylamino-2-bromoanthraquinone. The available reaction product is orange in color and dissolves in concentrated sulfuric acid with an initially greenish blue, then purely blue color. SUB-APPLICATION 1. Process according to claim, characterized in that it is carried out in the presence of a solvent. 2. Verfahren nach P'atentanspimch, dadurch gekennzeichnet, dass in Gegenwart von Kupfer gearbeitet wird. 3. Verfahren nach Patentanspruch, dadurch gekennzeichnet, dass in Gegenwart eines Kupfersalzes gearbeitet wird. A method according to P'atentanspimch, characterized in that it is carried out in the presence of copper. 3. The method according to claim, characterized in that it is carried out in the presence of a copper salt.
CH190037D 1934-08-01 1935-07-31 Process for the production of an anthraquinone derivative. CH190037A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE190037X 1934-08-01
CH186555T 1935-07-31

Publications (1)

Publication Number Publication Date
CH190037A true CH190037A (en) 1937-03-31

Family

ID=25721383

Family Applications (1)

Application Number Title Priority Date Filing Date
CH190037D CH190037A (en) 1934-08-01 1935-07-31 Process for the production of an anthraquinone derivative.

Country Status (1)

Country Link
CH (1) CH190037A (en)

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