CH128901A - Process for the preparation of Bz1-Oxy-Bz3-phenylbenzanthrone sulfonic acid. - Google Patents

Process for the preparation of Bz1-Oxy-Bz3-phenylbenzanthrone sulfonic acid.

Info

Publication number
CH128901A
CH128901A CH128901DA CH128901A CH 128901 A CH128901 A CH 128901A CH 128901D A CH128901D A CH 128901DA CH 128901 A CH128901 A CH 128901A
Authority
CH
Switzerland
Prior art keywords
oxy
phenylbenzanthrone
sulfonic acid
preparation
acid
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 CH128901A publication Critical patent/CH128901A/en

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

Description

  

  Verfahren zur Darstellung der     Bzl-Oxy-Bz3-phenylhenzantlaronsulfosäure.       Gegenstand der vorliegenden Erfindung  ist ein Verfahren zur Darstellung der     Bzl-          Oxy-Bz3-phenylbenzantlironsulfosäure,    da  durch     gekennzeichnet,        .dass    man     Anthron    und       Benzalmalonsäuredimethylester    von der fol  genden Formel:  
EMI0001.0008     
    unter Zusatz eines sauren Kondensations  mittels kondensiert und das erhaltene Produkt  mit     Oleum    behandelt.  



  <I>Beispiel:</I>  10 Gewichtsteile     Anthronbenzylmalon-          säure-dimethylester    (erhalten durch Erwär  men von     Anthron    mit     BenzaImalonsäure-di-          methylester    bei Gegenwart von etwas     Piperi-          din    - vergleiche Journal für praktische  Chemie 97, Seite 285) werden in 100 Ge-         wichtsteilen    20%igem     Oleum    gelöst. Die  grüngelbe Lösung wird bei 100   rot und wird  etwa 10 Minuten bei dieser Temperatur ge  rührt. Dann giesst man die Schmelze auf Eis,  stumpft die Säure mit Kreide ab, pocht auf  und saugt vom Rückstand ab, der mit heissem  Wasser gut gewaschen wird.

   Die Lauge lie  fert beim Eindampfen das gelbe Kochsalz  der     Sulfosäure    des     Bzl-Oxy-Bz3-phenylbenz-          anthrons.     



  Die so dargestellte     Bzl-Oxy-Bz3-plienyl-          benzanthronsulfosäure    löst sich in Wasser  mit goldgelber Farbe, welche auf Zusatz von  Alkali nach     violetter    Farbe umschlägt. Kon  zentrierte Schwefelsäure löst mit roter Farbe  und roter Fluoreszenz.



  Process for the preparation of Bzl-Oxy-Bz3-phenylhenzantlaronsulfonic acid. The present invention relates to a process for the preparation of Bzl-oxy-Bz3-phenylbenzantlironsulfonic acid, characterized in that anthrone and dimethyl benzalmalonate are derived from the following formula:
EMI0001.0008
    condensed with the addition of an acidic condensation means and treated the product obtained with oleum.



  <I> Example: </I> 10 parts by weight of anthrone benzylmalonic acid dimethyl ester (obtained by heating anthrone with benzal imalonic acid dimethyl ester in the presence of a little piperidine - compare Journal for Practical Chemistry 97, page 285) are in 100 Parts by weight of 20% oleum dissolved. The green-yellow solution turns red at 100 and is stirred for about 10 minutes at this temperature. The melt is then poured onto ice, the acid is blunted with chalk, boiled and the residue is suctioned off, which is washed well with hot water.

   During evaporation, the lye delivers the yellow salt of the sulfonic acid of Bzl-Oxy-Bz3-phenylbenzanthrone.



  The Bzl-Oxy-Bz3-plienylbenzanthrone sulfonic acid thus prepared dissolves in water with a golden yellow color, which changes to violet color when alkali is added. Concentrated sulfuric acid dissolves with red color and red fluorescence.

 

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung der Bzl-Oxy- Bz3-phenylbenzanthronsulfosäure, dadurch gekennzeichnet, dass man Anthron und Benz- almalonsäuredimethylester unter Zusatz eines sauren Kondensationsmittels kondensiert und das erhaltene Produkt mit Oleum behandelt. Die so dargestellte Bz1-Oxy-Bz3-phenyl- benzanthronsulfosäure löst sich in Wasser mit goldgelber Farbe, welche auf Zusatz von Alkali nach violett umschlägt. Konzentrierte Schwefelsäure löst mit roter Farbe und roter Fluoreszenz. Claim: Process for the preparation of Bzl-oxy-Bz3-phenylbenzanthrone sulfonic acid, characterized in that anthrone and dimethyl benzalmalonate are condensed with the addition of an acidic condensing agent and the product obtained is treated with oleum. The Bz1-oxy-Bz3-phenylbenzanthrone sulfonic acid thus represented dissolves in water with a golden yellow color, which turns violet on the addition of alkali. Concentrated sulfuric acid dissolves with red color and red fluorescence.
CH128901D 1927-03-09 1927-04-02 Process for the preparation of Bz1-Oxy-Bz3-phenylbenzanthrone sulfonic acid. CH128901A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE128901X 1927-03-09
CH127266T 1927-04-02

Publications (1)

Publication Number Publication Date
CH128901A true CH128901A (en) 1928-11-16

Family

ID=25710847

Family Applications (1)

Application Number Title Priority Date Filing Date
CH128901D CH128901A (en) 1927-03-09 1927-04-02 Process for the preparation of Bz1-Oxy-Bz3-phenylbenzanthrone sulfonic acid.

Country Status (1)

Country Link
CH (1) CH128901A (en)

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