CH178442A - Process for the preparation of an asymmetric arsenic compound. - Google Patents

Process for the preparation of an asymmetric arsenic compound.

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Publication number
CH178442A
CH178442A CH178442DA CH178442A CH 178442 A CH178442 A CH 178442A CH 178442D A CH178442D A CH 178442DA CH 178442 A CH178442 A CH 178442A
Authority
CH
Switzerland
Prior art keywords
asymmetric
arsenic compound
preparation
compound
heated
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 CH178442A publication Critical patent/CH178442A/en

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  • Inorganic Compounds Of Heavy Metals (AREA)

Description

  

  Verfahren zur Herstellung einer asymmetrischen     Arsenoverbindnng.       Gegenstand der vorliegenden Erfindung  ist ein Verfahren zur Herstellung einer     asym-          inetrischen        Arsenoverbindung,    welches da  durch gekennzeichnet ist, dass man     2.2'-          Dioxy-3    .     3'-diacetyldiamino-5    .

       5'-arsenopy        ri-          din    zusammen mit     1.1'-Dimethyl-5.        5'-arseno-          berrzimidazol-oxyessigsärare    in alkalischer Lö  sung erwärmt und aus der Lösung die asym  metrische     Arsenobenzolverbindung    durch An  säuern ausfällt.  



  Das neue Verfahrensprodukt ist ein gel  bes, in Alkalien leicht lösliches Pulver, das  beim Erhitzen verkohlt, ohne zu schmelzen.  Es soll als Arzneimittel verwendet werden.  <I>Beispiel:</I>  In analoger Weise wie in dem Beispiel  des Hauptpatentes 172872 beschrieben, wer  den 3,7     gr    2 .     2'-Dioxy-3    .     3'-diaeetyldiamino-          5    .     5'arsenopyridin    in Wasser mit Natronlauge  gelöst     und    mit 6.05     gr    1.     1'-dimethyl-5.5'-          arsenobenzimidazoloxyessigsaurem    Natrium in  150 cm' Wasser umgesetzt. Die Reaktion  ist nach einer Stunde beendet.

   Dann wird    mit Salzsäure gefällt, abgesaugt und ausge  waschen Das so erhaltene     Arsenobenzol    kann  in analoger Weise wie im Hauptpatent 172872  beschrieben ist, in das     Natriumsalz    überge  führt werden. Es entsteht so ein gelbes, in  Wasser leicht lösliches Pulver, das beim Er  hitzen verkohlt, ohne zu schmelzen.



  Method of making an asymmetrical arsenic compound. The present invention relates to a process for producing an asymmetrical arsenic compound which is characterized in that 2.2'-dioxy-3. 3'-diacetyldiamino-5.

       5'-arsenopyridine together with 1,1'-dimethyl-5. 5'-arseno-berrzimidazole-oxyacetic acid is heated in an alkaline solution and the asymmetric arsenobenzene compound precipitates out of the solution by acidification.



  The new product of the process is a yellow powder, easily soluble in alkalis, which carbonizes when heated without melting. It is intended to be used as a medicine. <I> Example: </I> In an analogous manner as described in the example of the main patent 172872, who the 3.7 gr 2. 2'-dioxy-3. 3'-diaeetyldiamino-5. 5'arsenopyridine dissolved in water with sodium hydroxide solution and reacted with 6.05 g 1. 1'-dimethyl-5.5'-arsenobenzimidazoloxyacetic acid sodium in 150 cm 'water. The reaction is over after one hour.

   Then it is precipitated with hydrochloric acid, filtered off with suction and washed out. The arsenobenzene thus obtained can be converted into the sodium salt in a manner analogous to that described in the main patent 172872. The result is a yellow powder that is easily soluble in water and that carbonizes when heated without melting.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung einer asym metrischen Arsenoverbindung, dadurch ge kennzeichnet, dass man 2 . 2'-Dioxy-3 . 3'-dia- cetyldiamino-5.5'-arsenopyridiri zusammen mit 1. 1'-Dimethyl-5.5'-arsenobenzimidazol- oxyessigsäure in alkalischer Lösung erwärmt, und aus derLösung die asymmetrischeArseno- benzolverbindung durch Ansäuern ausfällt. Das Verfahrensprodukt ist ein gelbes, in Alkalien leicht lösliches Pulver, das beim Erhitzen verkohlt, ohne zu schmelzen. Es soll als Arzneimittel verwendet werden. PATENT CLAIM: Process for producing an asymmetrical arsenic compound, characterized in that 2. 2'-dioxy-3. 3'-diacetyldiamino-5.5'-arsenopyridiri together with 1. 1'-dimethyl-5.5'-arsenobenzimidazole-oxyacetic acid in an alkaline solution, and the asymmetric arsenobenzene compound precipitates from the solution by acidification. The product of the process is a yellow powder which is easily soluble in alkalis and which carbonizes when heated without melting. It is intended to be used as a medicine.
CH178442D 1932-08-06 1933-07-28 Process for the preparation of an asymmetric arsenic compound. CH178442A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE178442X 1932-08-06
CH172872T 1933-07-28

Publications (1)

Publication Number Publication Date
CH178442A true CH178442A (en) 1935-07-15

Family

ID=25719287

Family Applications (1)

Application Number Title Priority Date Filing Date
CH178442D CH178442A (en) 1932-08-06 1933-07-28 Process for the preparation of an asymmetric arsenic compound.

Country Status (1)

Country Link
CH (1) CH178442A (en)

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