AT136002B - Process for the preparation of acylaminobenzenestibinic acids. - Google Patents

Process for the preparation of acylaminobenzenestibinic acids.

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Publication number
AT136002B
AT136002B AT136002DA AT136002B AT 136002 B AT136002 B AT 136002B AT 136002D A AT136002D A AT 136002DA AT 136002 B AT136002 B AT 136002B
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AT
Austria
Prior art keywords
acids
preparation
acylaminobenzenestibinic
aminobenzenestibinic
acid
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German (de)
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Ig Farbenindustrie Ag
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Publication of AT136002B publication Critical patent/AT136002B/en

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  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)

Description

  

   <Desc/Clms Page number 1> 
 



  Verfahren zur Darstellung von   Aeylaminobenzolstibinsäuren.   



   In der Patentschrift Nr. 133895 ist ein Verfahren zur Darstellung von   Acylaminobenzolstibin-   säuren beschrieben, das darin besteht, dass man in   Acylaminoanilinderivate,   welche in einer o-Stellung zur primären Aminogruppe eine OH-,   Oh3-,   CH3-Gruppe oder Halogen enthalten, während die andere o-Stellung unbesetzt ist, und die im übrigen beliebig substituiert sein können, über den Diazoweg nach üblichen Methoden den Antimonsäurerest einführt. 



   Es wurde nun gefunden, dass man die gleichen Verbindungen, die eine hervorragende perorale
Wirkung bei   Trypanosomenerkrankungen   und andern Tropenkrankheiten aufweisen, durch Acylierung von Aminobenzolstibinsäuren. welche in einer o-Stellung zum Stibinsäurerest eine OH-, OCH3-, CH3-
Gruppe oder Halogen enthalten, während die andere o-Stellung unbesetzt ist, und die im übrigen beliebig substituiert sein können, mit den   hiefür üblichen Aeylierungsmitteln,   ausgenommen Oxyacylreste enthaltende (diesbezüglich s. Patentschrift Nr. 129770), erhalten kann. 



   Beispiel : 28 g   4-Amino-2-methylbenzolstibinsäure- (1),   hergestellt durch Umsetzen von diazo- tiertem   4-Nitro-l-amino-2-methylbenzol   mit Natriumantimonit und Reduktion der so   erhaltenen4-Nitrr-     2-methylbenzolstibinsäure- (1),   werden in Form des Natriumsalzes in 150 cm3 Wasser gelöst. Unter
Rühren lässt man bei Zimmertemperatur 15 g Essigsäureanhydrid zufliessen und rührt, bis die Temperatur wieder gefallen ist. Dann setzt man Salzsäure zu, bis die Lösung kongosauer ist, saugt ab und reinigt die so gewonnene Stibinsäure, indem man sie in   Methylalkohol löst,   vom Ungelösten absaugt und mit Äther fällt.

   Man erhält die 4-Acetamino-2-methylbenzolstibinsäure-(1) als weisses, in verdünnten Alkalien leicht lösliches Pulver, das beim Erhitzen verkohlt, ohne zu schmelzen. 

**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.



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  Process for the preparation of aeylaminobenzenesibinic acids.



   Patent specification No. 133895 describes a process for the preparation of acylaminobenzolestibin acids which consists in converting into acylaminoaniline derivatives which contain an OH, Oh3, CH3 group or halogen in an o-position to the primary amino group the other o-position is unoccupied, and which can otherwise be substituted as desired, introduces the antimonic acid residue via the diazo route according to customary methods.



   It has now been found that one can obtain the same compounds that produce an excellent peroral
Have an effect on trypanosomal diseases and other tropical diseases by acylating aminobenzenestibinic acids. which in an o-position to the stibic acid residue is an OH-, OCH3-, CH3-
Contain group or halogen, while the other o-position is unoccupied, and which can otherwise be substituted as desired, with the aylating agents customary for this purpose, with the exception of those containing oxyacyl radicals (in this regard see patent specification No. 129770).



   Example: 28 g of 4-amino-2-methylbenzenestibinic acid (1), prepared by reacting diazo-tated 4-nitro-1-amino-2-methylbenzene with sodium antimonite and reducing the 4-nitrr-2-methylbenzenestibic acid (1 ), are dissolved in 150 cm3 of water in the form of the sodium salt. Under
15 g of acetic anhydride are allowed to flow in at room temperature and the mixture is stirred until the temperature has fallen again. Then hydrochloric acid is added until the solution is acidic to the Congo, and the stibic acid obtained in this way is filtered off and purified by dissolving it in methyl alcohol, sucking off the undissolved material and falling with ether.

   The 4-acetamino-2-methylbenzenestibinic acid- (1) is obtained as a white powder which is easily soluble in dilute alkalis and which carbonizes on heating without melting.

** WARNING ** End of DESC field may overlap beginning of CLMS **.

 

Claims (1)

PATENT-ANSPRUCH : Verfahren zur Darstellung von Acylaminobenzolstibinsäuren durch Acylierung von Aminobenzol- stibinsäuren mit den hiefür üblichen Aeylierungsmitteln, ausgenommen Oxyacylreste enthaltende, dadurch gekennzeichnet, dass solche Aminobenzolstibinsäuren als Ausgangsstoffe verwendet werden, welche in einer o-Stellung zum Stibinsäurerest eine OH-, OCH3-, CH3-Gruppe oder Halogen enthalten. während die andere o-Stellung unbesetzt ist, und die im übrigen beliebig substituiert sein können. **WARNUNG** Ende CLMS Feld Kannt Anfang DESC uberlappen**. PATENT CLAIM: Process for the preparation of acylaminobenzenestibinic acids by acylation of aminobenzenestibinic acids with the aylating agents customary for this purpose, except those containing oxyacyl residues, characterized in that aminobenzenestibinic acids are used as starting materials which have an OH, OCH3, CH3 group in an o-position to the stibic acid residue or contain halogen. while the other o-position is unoccupied, and which can otherwise be substituted as desired. ** WARNING ** End of CLMS field may overlap beginning of DESC **.
AT136002D 1929-06-15 1930-05-15 Process for the preparation of acylaminobenzenestibinic acids. AT136002B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE136002X 1929-06-15

Publications (1)

Publication Number Publication Date
AT136002B true AT136002B (en) 1933-12-27

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ID=29277928

Family Applications (1)

Application Number Title Priority Date Filing Date
AT136002D AT136002B (en) 1929-06-15 1930-05-15 Process for the preparation of acylaminobenzenestibinic acids.

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Country Link
AT (1) AT136002B (en)

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