CH128115A - Process for the preparation of the Bz1-phenylbenzanthrone. - Google Patents

Process for the preparation of the Bz1-phenylbenzanthrone.

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Publication number
CH128115A
CH128115A CH128115DA CH128115A CH 128115 A CH128115 A CH 128115A CH 128115D A CH128115D A CH 128115DA CH 128115 A CH128115 A CH 128115A
Authority
CH
Switzerland
Prior art keywords
phenylbenzanthrone
preparation
yellow
solution
product
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 CH128115A publication Critical patent/CH128115A/en

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

Description

  

  Verfahren zur Darstellung des     Bz1-Phenylbenzanthrons.       Gegenstand der vorliegenden Erfindung  ist ein Verfahren zur     Darstellung    des     Bzl-          Phenylbenzanthrons,    dadurch gekennzeich  net, dass man     Oxanthranol    und     ss-Chlorpro-          piophenon    der folgenden Formel:  
EMI0001.0008     
    unter Zusatz eines sauren Kondensations  mittels kondensiert.  



  <I>Beispiel:</I>  210 Gewichtsteile     Oxanthranol    werden  in 500 cm' konzentrierter Schwefelsäure ge  löst und diese Lösung mit 70 cm' Wasser  verdünnt. Dann lässt man 169 Gewichtsteile       ss-Chlorpropiophenon,    gelöst in 50 cm'  warmem Eisessig, unter Rühren bei etwa  100       zutropfen.    Die zuerst gelbe     Lösung     wird vorübergehend blaugrün, wobei unter    schwachem     Schäumen        Salzsäuregas    ent  weicht. Nach kurzem Rühren bei 115   ist  die Lösungsfarbe nach karminrot umge  schlagen. Man lässt 1 Stunde bei 110 bis  120       nachrühren    und     hiesst    dann auf Wasser  (braungelbe Flocken).

   Nach dem Absaugen,  Waschen und Trocknen kann zur Reinigung  das so gebildete     Phenylbenzanthron    aus Eis  essig umkristallisiert oder mit überhitztem  Dampf     sublimiert    werden. Gelbe Nadeln,  F. P.     18ä-184     , Lösungsfarbe in konzen  trierter Schwefelsäure     karminrot    mit kräftig  roter Fluoreszenz. Die     Spritlösung    zeigt in  tensiv gelbgrüne Fluoreszenz. Das Produkt  ist identisch mit dem im Beispiel des Zusatz  patentes Nr.     128114    beschriebenen.



  Process for the preparation of the Bz1-phenylbenzanthrone. The present invention relates to a process for the preparation of Bzl-phenylbenzanthrone, characterized in that oxanthranol and ß-chloropropiophenone of the following formula:
EMI0001.0008
    condensed with the addition of an acidic condensation means.



  <I> Example: </I> 210 parts by weight of oxanthranol are dissolved in 500 cm 'of concentrated sulfuric acid and this solution is diluted with 70 cm' of water. 169 parts by weight of β-chloropropiophenone, dissolved in 50 cm 'warm glacial acetic acid, are then added dropwise at about 100 with stirring. The first yellow solution turns blue-green temporarily, whereby hydrochloric acid gas escapes with slight foaming. After brief stirring at 115, the solution color has turned carmine red. The mixture is left to stir for 1 hour at 110 to 120 and then called water (brown-yellow flakes).

   After suctioning off, washing and drying, the phenylbenzanthrone thus formed can be recrystallized from glacial acetic acid or sublimed with superheated steam for cleaning. Yellow needles, F. P. 18ä-184, solution color in concentrated sulfuric acid carmine red with bright red fluorescence. The fuel solution shows intense yellow-green fluorescence. The product is identical to that described in the example of the additional patent no. 128114.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung des Bz1- Phenylbenzanthrons, dadurch gekennzeich net, dass man Oxanthranol und ss-Chlorpro- piophenon unter Zusatz eines sauren Konden- sationsmittels kondensiert. Das Produkt kristallisiert in gelben Na deln. Der Schmelzpunkt liegt bei 183 bis 184'. Die Lösungsfarbe in. konzentrierter Schwefelsäure ist karminrot mit kräftig roter Fluoreszenz. Die Spritlösung zeigt intensiv gelbgrüne Fluoreszenz. PATENT CLAIM: Process for the preparation of Bz1-phenylbenzanthrone, characterized in that oxanthranol and ß-chloropropiophenone are condensed with the addition of an acidic condensing agent. The product crystallizes in yellow needles. The melting point is 183 to 184 '. The color of the solution in concentrated sulfuric acid is carmine-red with a strong red fluorescence. The fuel solution shows intense yellow-green fluorescence. Das Produkt ist identisch mit dem im Zusatzpatent Nr.128114 beschriebenen. The product is identical to that described in the additional patent number 128114.
CH128115D 1926-04-03 1927-04-02 Process for the preparation of the Bz1-phenylbenzanthrone. CH128115A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE128115X 1926-04-03
CH127266T 1927-04-02

Publications (1)

Publication Number Publication Date
CH128115A true CH128115A (en) 1928-10-01

Family

ID=25710831

Family Applications (1)

Application Number Title Priority Date Filing Date
CH128115D CH128115A (en) 1926-04-03 1927-04-02 Process for the preparation of the Bz1-phenylbenzanthrone.

Country Status (1)

Country Link
CH (1) CH128115A (en)

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