CH128118A - Process for the preparation of Bz1-Bz3-diphenylbenzanthrone. - Google Patents

Process for the preparation of Bz1-Bz3-diphenylbenzanthrone.

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Publication number
CH128118A
CH128118A CH128118DA CH128118A CH 128118 A CH128118 A CH 128118A CH 128118D A CH128118D A CH 128118DA CH 128118 A CH128118 A CH 128118A
Authority
CH
Switzerland
Prior art keywords
diphenylbenzanthrone
preparation
bzl
anthrone
weight
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 CH128118A publication Critical patent/CH128118A/en

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

Description

  

  Verfahren zur Darstellung von     Bz1-Bz3-Diphenylbenzanthron.       Gegenstand der vorliegenden Erfindung  ist ein     Verfahren    zur Darstellung des     Bzl-          Bz3-Diphenylbenzanthrons,    dadurch gekenn  zeichnet, dass man     Anthron        fand        Benzyliden-          acetophenon    der folgenden Formel:  
EMI0001.0009     
    unter Zusatz eines sauren Kondensationsmit  tels kondensiert.  



  <I>Beispiel:</I>  In ein 60   warmes Gemisch von 100 Ge  wichtsteilen Schwefelsäure von 66       Be,    10  Gewichtsteilen Wasser und 34 Gewichtstei  len Eisessig gibt man     portionsweise    eine Mi  schung von 19,4 Gewichtsteilen     Anthron    und  21 Gewichtsteilen     Benzylidenacetophenon    und  hält auf über<B>60',</B> bis die Benzanthronbil-         dung    beendet ist. Die Aufarbeitung kann  wie im Beispiel .des Hauptpatentes angegeben  erfolgen.

   Man .erhält auf diese Weise einen  in gelben Nadeln     kristallisierbaren    Körper,  der bei 195 bis 196   schmilzt, in konzentrier  ter Schwefelsäure sich mit roter Farbe und  starker Fluoreszenz löst und welches als     Bzl-          Bz3-Diphenylbenzanthron    anzusprechen ist.



  Process for the preparation of Bz1-Bz3-diphenylbenzanthrone. The present invention relates to a process for the preparation of Bzl-Bz3-diphenylbenzanthrone, characterized in that anthrone was found benzylidene acetophenone of the following formula:
EMI0001.0009
    condensed with the addition of an acidic condensation agent.



  <I> Example: </I> In a 60 warm mixture of 100 parts by weight of sulfuric acid of 66 Be, 10 parts by weight of water and 34 parts by weight of glacial acetic acid, a mixture of 19.4 parts by weight of anthrone and 21 parts by weight of benzylidene acetophenone is added in portions and stopped over <B> 60 ', </B> until benzanthrone formation has ended. The work-up can be carried out as indicated in the example of the main patent.

   In this way, a body which can be crystallized in yellow needles is obtained, which melts at 195 to 196, dissolves in concentrated sulfuric acid with a red color and strong fluorescence and which can be addressed as Bzl-Bz3-diphenylbenzanthrone.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung von Bzl-Bz3- Diphenylbenzanthron, dadurch gekennzeich net, dass man Anthron und Benzylidenaceto- phenon unter Zusatz eines sauren Kondensa tionsmittels kondensiert. Das erhaltene Produkt kristallisiert in gelben Nadeln und schmilzt bei 195 bis 196 . In konzentrierter .Schwefelsäure löst es sich mit roter Farbe und starker Fluoreszenz. PATENT CLAIM: Process for the preparation of Bzl-Bz3-diphenylbenzanthrone, characterized in that anthrone and benzylidene acetophenone are condensed with the addition of an acidic condensation agent. The product obtained crystallizes in yellow needles and melts at 195 to 196. In concentrated sulfuric acid, it dissolves with a red color and strong fluorescence.
CH128118D 1926-04-03 1927-04-02 Process for the preparation of Bz1-Bz3-diphenylbenzanthrone. CH128118A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE128118X 1926-04-03
CH127266T 1927-04-02

Publications (1)

Publication Number Publication Date
CH128118A true CH128118A (en) 1928-10-01

Family

ID=25710834

Family Applications (1)

Application Number Title Priority Date Filing Date
CH128118D CH128118A (en) 1926-04-03 1927-04-02 Process for the preparation of Bz1-Bz3-diphenylbenzanthrone.

Country Status (1)

Country Link
CH (1) CH128118A (en)

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