CH128117A - Process for the preparation of Bz1-ethyl-Bz2-methylbenzanthrone. - Google Patents

Process for the preparation of Bz1-ethyl-Bz2-methylbenzanthrone.

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Publication number
CH128117A
CH128117A CH128117DA CH128117A CH 128117 A CH128117 A CH 128117A CH 128117D A CH128117D A CH 128117DA CH 128117 A CH128117 A CH 128117A
Authority
CH
Switzerland
Prior art keywords
ethyl
methylbenzanthrone
preparation
bzl
oxymethylene
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 CH128117A publication Critical patent/CH128117A/en

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

Description

  

  Verfahren zur Darstellung von     Bzl-Äthyl-Bz2-methylbenzanthron.       Gegenstand der vorliegenden Erfindung  ist ein Verfahren zur Darstellung des     Bzl-          Äthyl-Bzl-methylbenzanthrons,    dadurch ge  kennzeichnet, dass man     Anthron    und.     (Oxy-          methylen-äthyl)-äthylketonnatrium    der fol  genden Formel:  
EMI0001.0007     
    unter Zusatz eines sauren Kondensations  mittels kondensiert.  



  <I>Beispiel:</I>  25 Gewichtsteile     (Oxymethylen-äthyl)-          äthylketonnatrium    werden in 80 Gewichts  teilen Eisessig gelöst und diese Lösung zu  einer solchen von 19     Gewichtsteilen        Anthron     in 200 Gewichtsteilen Schwefelsäure von  62       B6    bei gewöhnlicher Temperatur zuge-    setzt. Nach kurzem Erwärmen auf dem  Wasserbad hat das Reaktionsgemisch eine  rein rote Farbe angenommen. Es     wird    auf  Wasser gegossen und das abgeschiedene       Benzanthronderivat    in der üblichen Weise  isoliert.

   Das erhaltene     Bzl-Äthyl-Bz2-me-          thylbenzanthron    kristallisiert aus Sprit in  langen gelben Nadeln vom Schmelzpunkt  1420.



  Process for the preparation of Bzl-ethyl-Bz2-methylbenzanthrone. The present invention relates to a method for the preparation of Bzl-ethyl-Bzl-methylbenzanthrone, characterized in that one anthrone and. (Oxymethylene-ethyl) -ethylketone sodium of the following formula:
EMI0001.0007
    condensed with the addition of an acidic condensation means.



  <I> Example: </I> 25 parts by weight of (oxymethylene-ethyl) ethyl ketone sodium are dissolved in 80 parts by weight of glacial acetic acid and this solution is added to one of 19 parts by weight of anthrone in 200 parts by weight of sulfuric acid of 62 B6 at ordinary temperature. After briefly warming up on the water bath, the reaction mixture has turned a pure red color. It is poured into water and the separated benzanthrone derivative isolated in the usual way.

   The Bzl-ethyl-Bz2-methylbenzanthrone obtained crystallizes from fuel in long yellow needles with a melting point of 1420.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung von Bzl- Äthyl-Bz2-methylbenzanthron, dadurch ge kennzeichnet, dass man Anthron und (Oxy- methylenäthyl)-äthylketonnatrium unter Zu satz eines sauren Kondensationsmittels kon densiert. Das erhaltene Produkt kristallisiert aus Sprit in langen., gelben: Nadeln vom Schmelz punkt 142 . PATENT CLAIM: Process for the preparation of Bzl-ethyl-Bz2-methylbenzanthrone, characterized in that anthrone and (oxymethylene ethyl) ethyl ketone sodium are condensed with the addition of an acidic condensing agent. The product obtained crystallizes from fuel in long, yellow: needles with a melting point of 142.
CH128117D 1926-04-03 1927-04-02 Process for the preparation of Bz1-ethyl-Bz2-methylbenzanthrone. CH128117A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE128117X 1926-04-03
CH127266T 1927-04-02

Publications (1)

Publication Number Publication Date
CH128117A true CH128117A (en) 1928-10-01

Family

ID=25710833

Family Applications (1)

Application Number Title Priority Date Filing Date
CH128117D CH128117A (en) 1926-04-03 1927-04-02 Process for the preparation of Bz1-ethyl-Bz2-methylbenzanthrone.

Country Status (1)

Country Link
CH (1) CH128117A (en)

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