CH170235A - Process for the preparation of an azo compound. - Google Patents

Process for the preparation of an azo compound.

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Publication number
CH170235A
CH170235A CH170235DA CH170235A CH 170235 A CH170235 A CH 170235A CH 170235D A CH170235D A CH 170235DA CH 170235 A CH170235 A CH 170235A
Authority
CH
Switzerland
Prior art keywords
dichloro
azobenzene
azo compound
ammonia
hydrochloride
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 CH170235A publication Critical patent/CH170235A/en

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

Description

  

  Verfahren zur Darstellung einer     Azoverbindung.       Das     schweiz.    Hauptpatent Nr. 165653  betrifft die Darstellung einer     Azoverbindung,     in der eine durch einen basischen Rest sub  stituierte     Aminogruppe    an einen mit der       Azogruppierung    verknüpften     Benzolring    ge  bunden ist.  



  Gegenstand des vorliegenden Patentes ist  ein Verfahren zur Darstellung des 3',     5'-Di-          chlor    - 4-     [N-        (r-ami        no        -(-        oxy-a    -     propyl)-äthyl-          atninol-azobenzol-hydrochlorids.    Dieses Ver  fahren ist dadurch gekennzeichnet, dass man  auf das     3',5'-Dichlor-4-(epihydryl-äthylamino)-          azobenzol    Ammoniak zweckmässig unter Er  wärmen einwirken lässt und das Reaktions  produkt mittelst Salzsäure in das     Hydro-          chlorid    umwandelt.  



  Das so erhältliche 3',5'-Dichlor-4-[N-(r       amino-p-oxy-a-propyl)-äthylamino]-azobenzol-          hydrochlorid    bildet hellbraune Nadeln vom  Schmelzpunkt 134", die sich in     Wasser    gelb,    in verdünnter Mineralsäure kirschrot lösen.  Das neue Produkt soll therapeutische An  wendung finden.

      <I>Beispiel</I>       3',5'-Dichlor-4-(epihydryl-äthylamino)-azo-          benzol    vom F. 86  , erhalten durch     Diazotieren     von 16,1     gr    3 .     5-Dichloranilin    mit 7     gr    N     a-          triumnitrit    und Kuppeln der     Diazoverbindung     mit 17,7     gr        N-Epihydryläthylanilin        (Kp6    128  )  in essigsaurer Lösung, wird mit überschüs  sigem     methylalkoholischemAmmoniak    2 Stun  den im Bombenrohr auf 100   erhitzt.

   Darauf  werden Methylalkohol und Ammoniak abge  dampft und das gebildete 3',5'-Dichlor-4-[N       (r-amino-,p-oxy-a-propyl)-äthylamino]-azoben-          zol    mittelst Salzsäure in das Hydrochlorid  umgewandelt. Das letztere bildet hellbraune  Nadeln vom Schmelzpunkt 134', die sich in  Wasser gelb, mit verdünnten Mineralsäuren  kirschrot lösen.



  Process for the preparation of an azo compound. Switzerland. Main patent no. 165653 relates to the preparation of an azo compound in which an amino group substituted by a basic radical is bound to a benzene ring linked to the azo group.



  The subject of the present patent is a process for the preparation of the 3 ', 5'-dichloro - 4- [N- (r-amino - (- oxy-a - propyl) ethyl atninol-azobenzene hydrochloride). This Ver Driving is characterized in that the 3 ', 5'-dichloro-4- (epihydryl-ethylamino) -azobenzene ammonia is expediently allowed to act under heating and the reaction product is converted into the hydrochloride using hydrochloric acid.



  The 3 ', 5'-dichloro-4- [N- (r amino-p-oxy-a-propyl) -äthylamino] -azobenzene hydrochloride which can be obtained in this way forms light brown needles with a melting point of 134 "which turn yellow in water, in Dissolve diluted mineral acid in cherry red The new product is intended to find therapeutic applications.

      <I> Example </I> 3 ', 5'-dichloro-4- (epihydryl-ethylamino) -azobenzene of F. 86, obtained by diazotizing 16.1 g 3. 5-dichloroaniline with 7 grams of sodium nitrite and coupling of the diazo compound with 17.7 grams of N-epihydrylethylaniline (Kp6 128) in acetic acid solution is heated to 100 for 2 hours in a bomb tube with excess methyl alcoholic ammonia.

   Methyl alcohol and ammonia are then evaporated off and the 3 ', 5'-dichloro-4- [N (r-amino-, p-oxy-a-propyl) ethylamino] azobenzene formed is converted into the hydrochloride using hydrochloric acid. The latter forms light brown needles with a melting point of 134 'which dissolve yellow in water and cherry-red with dilute mineral acids.

 

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung einer Azover- bindung, dadurch gekennzeichnet, dass man auf 3',5'-Dichlor-4-(epibydryl-äthylamino)- azobenzol Ammoniak einwirken lässt und das dabei erhältliche Reaktionsprodukt in sein Hydrochlorid umwandelt. Das so erhältliche 3',5'-Dichlor-4-[N-(Y amino-,p-oxy-a-propyl)-äthylamino]-azobenzol- hydrochlorid bildet hellbraune Nadeln vom Schmelzpunkt 134 , die sich in Wasser gelb, in verdünnter Mineralsäure kirschrot lösen. Das neue Produkt soll therapeutische An wendung finden. Claim: method for preparing an azo compound, characterized in that ammonia is allowed to act on 3 ', 5'-dichloro-4- (epibydryl-ethylamino) azobenzene and the reaction product obtained is converted into its hydrochloride. The thus obtainable 3 ', 5'-dichloro-4- [N- (Y amino-, p-oxy-a-propyl) -äthylamino] -azobenzene hydrochloride forms light brown needles with a melting point of 134, which turn yellow in water, in Dissolve diluted mineral acid in cherry red The new product is intended to find therapeutic applications. UNTERANSPRUCH: Verfahren nach Patentanspruch, dadurch gekennzeichnet, dass die Einwirkung von Ammoniak unter Erwärmen durchgeführt wird. SUBClaim: Method according to patent claim, characterized in that the action of ammonia is carried out with heating.
CH170235D 1931-11-07 1932-11-05 Process for the preparation of an azo compound. CH170235A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE170235X 1931-11-07

Publications (1)

Publication Number Publication Date
CH170235A true CH170235A (en) 1934-06-30

Family

ID=5688215

Family Applications (1)

Application Number Title Priority Date Filing Date
CH170235D CH170235A (en) 1931-11-07 1932-11-05 Process for the preparation of an azo compound.

Country Status (1)

Country Link
CH (1) CH170235A (en)

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