CH185358A - Process for producing an azo compound. - Google Patents

Process for producing an azo compound.

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Publication number
CH185358A
CH185358A CH185358DA CH185358A CH 185358 A CH185358 A CH 185358A CH 185358D A CH185358D A CH 185358DA CH 185358 A CH185358 A CH 185358A
Authority
CH
Switzerland
Prior art keywords
azo compound
producing
sodium hydroxide
hydroxide solution
oxyquinoline
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 CH185358A publication Critical patent/CH185358A/en

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

Description

  

  Verfahren zur Herstellung einer     Azoverbindung.       Das Hauptpatent betrifft ein Verfahren  zur Herstellung einer     Azoverbindung,    die durch  ihre bakterizide Wirkung ausgezeichnet ist.  



  Gegenstand des vorliegenden Patentes  ist ein Verfahren zur Herstellung des     8-0xy-          chinolin-azophenyl-4'-sulfonsäureamides.    Das  Verfahren ist dadurch gekennzeichnet, dass  man die     Diazoverbindung    des     4-Aminobenzol-          sulfonamides    mit     8-Oxychinolin    in Gegenwart  verdünnter     Alkalilauge    kuppelt. Das neue  Produkt ist ein dunkelbraunes Kristallpulver  vom Schmelzpunkt 2340, das in verdünnter  Natronlauge löslich ist.  



  Es soll im Hinblick auf seine bakterizide  Wirkung pharmazeutische Verwendung finden.  <I>Beispiel:</I>  20,8 g Hydrochlorid des     4-Aminobenzol-          sulfonamides    werden in 100 cm' Wasser ge  löst, 15 cm' konzentrierte Salzsäure zuge  geben und mit einer Lösung von 6,9     g    Na  triumnitrit bei etwa 5   dianotiert. Die     Diazo-          lösung    wird mit einer Lösung von 14,5 g       8-Oxychinolin    in überschüssiger verdünnter  Natronlauge vermischt.

   Ans der dunkelroten    Lösung wird das     8-Oxychinolinazophenyl-4'-          sulfonsäureamid    mit Essigsäure als dunkel  braunes Kristallpulver gefällt, das nach dem       Umlösen    aus Natronlauge und Fällen mit  Essigsäure den F.2340 hat.



  Process for producing an azo compound. The main patent relates to a process for the production of an azo compound which is distinguished by its bactericidal effect.



  The subject of the present patent is a process for the preparation of 8-oxy-quinoline-azophenyl-4'-sulfonic acid amide. The process is characterized in that the diazo compound of 4-aminobenzene sulfonamide is coupled with 8-oxyquinoline in the presence of dilute alkali. The new product is a dark brown crystal powder with a melting point of 2340, which is soluble in dilute sodium hydroxide solution.



  In view of its bactericidal effect, it is said to find pharmaceutical use. <I> Example: </I> 20.8 g of 4-aminobenzenesulfonamide hydrochloride are dissolved in 100 cm 'of water, 15 cm' of concentrated hydrochloric acid are added and a solution of 6.9 g of sodium nitrite at about 5 dianotiert. The diazo solution is mixed with a solution of 14.5 g of 8-oxyquinoline in excess dilute sodium hydroxide solution.

   The 8-oxyquinolinazophenyl-4'-sulfonic acid amide is precipitated from the dark red solution with acetic acid as a dark brown crystal powder, which has the F.2340 after dissolving from sodium hydroxide solution and precipitation with acetic acid.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung einer Azover- bindung, dadurch gekennzeichnet, dass man die Diazov erbindung des 4-Aminobenzolsulfon- amides mit 8-Oxychinolin in Gegenwart von verdünnter Alkalilauge kuppelt. Das so erhältliche 8-Oxychinolirr-azopherryl- 4'-sulfonsäureamid ist ein dunkelbraunes Kri stallpulver vom F.234 . Es ist in verdünnter Natronlauge löslich. PATENT CLAIM: Process for the preparation of an azo compound, characterized in that the diazo compound of the 4-aminobenzenesulfonamide is coupled with 8-oxyquinoline in the presence of dilute alkali. The 8-Oxychinolirr-azopherryl-4'-sulfonic acid amide obtainable in this way is a dark brown crystal powder from F.234. It is soluble in dilute sodium hydroxide solution. UNTERANSPRUCH: Verfahren nach Patentanspruch, dadurch gekennzeichnet, dass man das Reaktions produkt aus der Reäktionsmischung durch Zusatz von Essigsäure abscheidet. SUBSTANTIAL CLAIM: Process according to patent claim, characterized in that the reaction product is separated out from the reaction mixture by adding acetic acid.
CH185358D 1933-11-30 1934-09-13 Process for producing an azo compound. CH185358A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE185358X 1933-11-30
CH173540T 1933-12-16

Publications (1)

Publication Number Publication Date
CH185358A true CH185358A (en) 1936-07-15

Family

ID=25719371

Family Applications (1)

Application Number Title Priority Date Filing Date
CH185358D CH185358A (en) 1933-11-30 1934-09-13 Process for producing an azo compound.

Country Status (1)

Country Link
CH (1) CH185358A (en)

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