CH185571A - Process for the preparation of an aminochrysenic sulfonic acid. - Google Patents

Process for the preparation of an aminochrysenic sulfonic acid.

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Publication number
CH185571A
CH185571A CH185571DA CH185571A CH 185571 A CH185571 A CH 185571A CH 185571D A CH185571D A CH 185571DA CH 185571 A CH185571 A CH 185571A
Authority
CH
Switzerland
Prior art keywords
preparation
acid
sulfonic acid
aminochrysenic
acetamino
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 CH185571A publication Critical patent/CH185571A/en

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Description

  

  Verfahren zur Darstellung einer     Aminochrysensulfosäur    e.    Gegenstand des vorliegenden Zusatzpa  tentes ist ein Verfahren zur Darstellung  einer     Aminochrysensulfosäure,    welches da  durch gekennzeichnet ist, dass man     Acet-          amino-aminochrysen    vom Schmelzpunkt 266  bis 268   C mit einem     sulfonierend    wirken  den Mittel behandelt.  



  <I>Beispiel:</I>  20 Gewichtsteile     Acetamino-aminochry-          sen    vom Schmelzpunkt 266 bis<B>268'</B> C wer  den in 800 Gewichtsteilen :Schwefelsäure  monohydrat 3 bis 4 Stunden bei 45 bis<B>50'</B> C  verrührt. Man gibt auf Eis, Saugt ab, löst  in     Natriumcarbonat    und filtriert. Mit Na  triumchlorid fällt die     Diaminochrysensulfo-          säure    aus.

   Die so erhaltene     Diaminochrysen-          sulfosäure    kristallisiert aus Wasser in  schwach gelb gefärbten Blättchen.     Diazotiert     man diese     Diaminochrysensulfosäure        und     gibt sie in alkalische     Naphtollösung,    so er  hält man einen blauvioletten Farbstoff. Sie    kann zur Darstellung von     Farbstoffen        und     pharmazeutischen Produkten     Verwendung     finden.  



  Das als Ausgangsstoff     verwendete        Acet-          amino-aminochrysen    kann folgendermassen  erhalten werden:       Acetaminochrysen    vom     Schmelzpunkt     286 bis<B>288'</B> C wird in Eisessig suspendiert  und mit Salpetersäure vom spezifischen Ge  wicht 1,5 bei     etwa    70 bis 80   C nitriert. Das  so erhaltene Nitroprodukt wird in     Pyridin     in Gegenwart von fein verteiltem Nickel in  einem     Autoklaven    bei 70 bis 90   mit Was  serstoff reduziert.

   Hierdurch wird das     @Acet-          amino-aminochrysen,    das sich aus Eisessig       umkristallisieren    lässt, erhalten.



  Method for the preparation of an aminochrysensulfonic acid e. The subject of the present Zusatzpa tentes is a method for the preparation of an aminochrysenic sulfonic acid, which is characterized in that acetamino-aminochrysene with a melting point of 266 to 268 C is treated with a sulfonating agent.



  <I> Example: </I> 20 parts by weight of acetamino-aminochrysene with a melting point of 266 to <B> 268 '</B> C are used in 800 parts by weight: sulfuric acid monohydrate 3 to 4 hours at 45 to <B> 50' </B> C stirred. It is poured onto ice, suctioned off, dissolved in sodium carbonate and filtered. The diaminochrysensulphonic acid precipitates with sodium chloride.

   The diaminochrysenesulfonic acid obtained in this way crystallizes from water in pale yellow colored flakes. If you diazotise this diaminochrysene sulfonic acid and put it in alkaline naphthol solution, you get a blue-violet dye. It can be used to represent dyes and pharmaceutical products.



  The acetaminochrysenic used as the starting material can be obtained as follows: Acetaminochrysenic with a melting point of 286 to 288 ° C is suspended in glacial acetic acid and nitrated with nitric acid with a specific weight of 1.5 at about 70 to 80 ° C . The nitro product thus obtained is reduced in pyridine in the presence of finely divided nickel in an autoclave at 70 to 90 with hydrogen.

   The @acet-amino-aminochrysen, which can be recrystallized from glacial acetic acid, is obtained in this way.

 

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung einer Amino- chrysensulfosäure, dadurch gekennzeichnet, dass man Acetamino-aminochrysen vom chrysen mit Schwefelsäure-monohydrat 3 bis 4 Stunden bei 45 bis 50 C verrührt und das so erhaltene Produkt auf Eis gibt. Schmelzpunkt 266 bis<B>268'</B> C mit einem sulfonierend wirkenden Mittel behandelt. Die so erhaltene Diaminochrysensulfo- säure kristallisiert aus Wasser in schwach gelb gefärbten Blättchen. PATENT CLAIM: Process for the preparation of an amino-chrysensulfonic acid, characterized in that acetamino-aminochrysene vom chrysen is stirred with sulfuric acid monohydrate for 3 to 4 hours at 45 to 50 C and the product thus obtained is poured on ice. Melting point 266 to <B> 268 '</B> C treated with a sulfonating agent. The diaminochrysulfonic acid obtained in this way crystallizes from water in pale yellow colored flakes. UNTERANSPRUCH: Verfahren nach Patentanspruch, dadurch gekennzeichnet, dass man Acetamino-amino- SUBCLAIM: Method according to claim, characterized in that acetamino-amino-
CH185571D 1933-12-15 1934-12-13 Process for the preparation of an aminochrysenic sulfonic acid. CH185571A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE179446X 1933-12-15
DE185571X 1933-12-15
CH179447T 1934-12-13

Publications (1)

Publication Number Publication Date
CH185571A true CH185571A (en) 1936-07-31

Family

ID=27177660

Family Applications (1)

Application Number Title Priority Date Filing Date
CH185571D CH185571A (en) 1933-12-15 1934-12-13 Process for the preparation of an aminochrysenic sulfonic acid.

Country Status (1)

Country Link
CH (1) CH185571A (en)

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