CH127448A - Process for the preparation of 1.Oxy-3. 4-benz-8. 9 (y-methyl) -benz-pyrene-5. 10-quinone. - Google Patents

Process for the preparation of 1.Oxy-3. 4-benz-8. 9 (y-methyl) -benz-pyrene-5. 10-quinone.

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Publication number
CH127448A
CH127448A CH127448DA CH127448A CH 127448 A CH127448 A CH 127448A CH 127448D A CH127448D A CH 127448DA CH 127448 A CH127448 A CH 127448A
Authority
CH
Switzerland
Prior art keywords
benz
red
pyrene
quinone
oxy
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 CH127448A publication Critical patent/CH127448A/en

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  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Coloring Foods And Improving Nutritive Qualities (AREA)

Description

  

  Verfahren zur Darstellung von     1.Ogy-3.        4-benz-8.    9     (r-xnetliyl)-benz-pyren-f;.        10-ehinon.       Gegenstand dieses Zusatzpatentes ist ein  Verfahren zur Darstellung von     1.Oxy-3    .4       benz-8    .     9(r    -     methyl)-benz-pyren-    5 . 10 -     chinon,     welches dadurch gekennzeichnet ist, dass man  den     p-Toluylsäureester    des     Bz-2-Oxybenzan-          throns    mit sauren Kondensationsmittel be  handelt.

   Das Endprodukt des Verfahrens be  sitzt folgende     Konstitution     
EMI0001.0014     
         Beispiel:     10 Gewichtsteile     p-Toluylsäureester    des       Bz-2-Oxybenzanthrons    (dargestellt durch Er  hitzen gleicher Teile     p-Toluylsäurechlorid    und         Bz-2-Oxybenzanthron    auf 160  , aus Chlor  benzol gelbbraune Kristalle F. P. 212-213  ,  in konzentrierter Schwefelsäure braunrot mit  brauner Fluoreszenz löslich) werden bei 180    in ein geschmolzenes Gemisch von 50 Teilen       A1Cls    und 10 Teilen     Natriumchlorid    einge  tragen und unter Rühren eine halbe Stunde  auf 220-240   erhitzt.

   Nach dem Erkalten  wird der Schmelzkuchen zerkleinert und mit  verdünnter Salzsäure ausgekocht. Das Pro  dukt ist getrocknet ein rotbraunes Pulver,  das sich in konzentrierter Schwefelsäure mit  rotvioletter Farbe löst. Aus der kirschroten       Hydrosulfitküpe    wird Baumwolle rotbraun  angefärbt. Das Endprodukt soll als Farbstoff  und     Farbstoffzwischenprodukt    Verwendung  finden.



  Procedure for the representation of 1.Ogy-3. 4-benz-8. 9 (r-xnetliyl) -benz-pyrene-f ;. 10-ehinon. The subject of this additional patent is a process for the preparation of 1.Oxy-3 .4 benz-8. 9 (r-methyl) -benz-pyrene-5. 10 - quinone, which is characterized in that the p-toluic acid ester of Bz-2-oxybenzanthrone is treated with an acidic condensation agent.

   The end product of the process has the following constitution
EMI0001.0014
         Example: 10 parts by weight of p-toluic acid ester of Bz-2-oxybenzanthrone (produced by heating equal parts of p-toluic acid chloride and Bz-2-oxybenzanthrone to 160, from chlorobenzene yellow-brown crystals FP 212-213, soluble in concentrated sulfuric acid brown-red with brown fluorescence ) are carried at 180 in a molten mixture of 50 parts of A1Cls and 10 parts of sodium chloride and heated to 220-240 for half an hour while stirring.

   After cooling, the melt cake is crushed and boiled with dilute hydrochloric acid. The dried product is a red-brown powder that dissolves in concentrated sulfuric acid with a red-violet color. Cotton is dyed red-brown from the cherry-red hydrosulfite vat. The end product is intended to be used as a dye and intermediate dye product.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung von@l .Oxy-3.4- benz - 8 . 9(r-methyl)-benz-pyre n-5 . 10 - chinon, dadurch 'gekennzeichnet, dass man den p- Toluylsäureester des Bz-2-Oxybenzanthrons mit sauren Kondensationsmitteln behandelt. Die Verbindung stellt getrocknet ein rot braunes Pulver dar, das sich in konzentrier ter Schwefelsäure mit rotvioletter Farbe löst. Aus der kirschroten Hydrosulfitküpe wird Baumwolle rotbraun angefärbt. PATENT CLAIM: Process for the preparation of @ l .Oxy-3.4- benz - 8. 9 (r-methyl) -benz-pyrene n-5. 10 - quinone, characterized in that the p-toluic acid ester of Bz-2-oxybenzanthrone is treated with acidic condensing agents. When dried, the compound is a red-brown powder that dissolves in concentrated sulfuric acid with a red-violet color. Cotton is dyed red-brown from the cherry-red hydrosulfite vat. Das End- produkt soll als Farbstoff und Farbstoff zwischenprodukt Verwendung finden. The end product should be used as a dye and intermediate dye.
CH127448D 1925-12-30 1926-12-28 Process for the preparation of 1.Oxy-3. 4-benz-8. 9 (y-methyl) -benz-pyrene-5. 10-quinone. CH127448A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE127448X 1925-12-30
CH125722T 1926-12-28

Publications (1)

Publication Number Publication Date
CH127448A true CH127448A (en) 1928-09-01

Family

ID=25710547

Family Applications (1)

Application Number Title Priority Date Filing Date
CH127448D CH127448A (en) 1925-12-30 1926-12-28 Process for the preparation of 1.Oxy-3. 4-benz-8. 9 (y-methyl) -benz-pyrene-5. 10-quinone.

Country Status (1)

Country Link
CH (1) CH127448A (en)

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