CH259666A - Process for the preparation of a biguanide derivative. - Google Patents

Process for the preparation of a biguanide derivative.

Info

Publication number
CH259666A
CH259666A CH259666DA CH259666A CH 259666 A CH259666 A CH 259666A CH 259666D A CH259666D A CH 259666DA CH 259666 A CH259666 A CH 259666A
Authority
CH
Switzerland
Prior art keywords
preparation
biguanide derivative
dichlorophenyl
acid
salts
Prior art date
Application number
Other languages
German (de)
Inventor
Limited Imperial Ch Industries
Original Assignee
Ici Ltd
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 Ici Ltd filed Critical Ici Ltd
Publication of CH259666A publication Critical patent/CH259666A/en

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C279/00Derivatives of guanidine, i.e. compounds containing the group, the singly-bound nitrogen atoms not being part of nitro or nitroso groups
    • C07C279/20Derivatives of guanidine, i.e. compounds containing the group, the singly-bound nitrogen atoms not being part of nitro or nitroso groups containing any of the groups, X being a hetero atom, Y being any atom, e.g. acylguanidines
    • C07C279/24Y being a hetero atom
    • C07C279/26X and Y being nitrogen atoms, i.e. biguanides

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

  

  Verfahren zur Herstellung eines     Biguanidderivates.            1)ie    vorliegende Erfindung betrifft ein  Verfahren zur Herstellung von     N'-3,4-Di-          elilorplieriyl-N'-äthylbiguanid,    welches ein  wertvolles chemotherapeutisches Mittel ist  oder als Zwischenprodukt für die Herstellung  von chemotherapeutischen Mitteln verwendet  werden kann. Es ist insbesondere ein wert  volles     Antimalariamittel.     



  Erfindungsgemäss wird die besagte neue  Verbindung, nämlich     N'-3,4-Dichlorphenyl-          N--'-äthyll)iguanid,    dadurch erhalten, dass man       N"-#'#@thy        ldieyandiamid    mit     3,4-Dichloranilin     umsetzt.  



  Die Umsetzung erfolgt zweckmässig durch  Erhitzen eines Salzes des Amins     mit    dein  substituierten     Dicyandiamid    in Gegenwart  eines     Lösungsmittels,    wie z. B. Wasser oder       ss-Ätlioxyätlianol.     



  Das     N1-3,4-Diclilorphenyl-N'-äthylbiguanid     stellt eine starke Base dar, welche mit orga  nischen und anorganischen Säuren beständige  Salze ergibt, die in manchen Fällen in  Wasser leicht löslich sind. Die Salze lassen  sich dadurch herstellen, dass die Base in.       wässrigen    Lösungen der Säure gelöst     und     hierauf das Wasser verdampft wird, doch  können sie in trockener Form bequemer  durch Vermischen der Komponenten in einem  organischen Lösungsmittel, wie z. B. Aceton,  oder in einem.     Alkohol,    in welchem die Salze  spärlich löslich sind, hergestellt werden.

   Auf    diese Weise kann man beispielsweise die Salze  mit Essigsäure, Milchsäure,     Methansulfon-          säure,        Methylendisalicylsättre,        Methylen-bis-f-          oxynaphthoesäure    und Salzsäure bequem her  stellen.  



  Das folgende Beispiel diene zur Erläute  rung der Erfindung.  



       Beispiel:     Ein Gemisch von 12,3 Teilen     N"--Äthy        1-          dicyandiamid    und 19,85 Teilen     3,4-Dichlor-          anilin-chlorhydrat    in 100 Teilen     '--Äthoxy-          äthanol    wird während 3 Stunden unter Rück  fluss zum Sieden erhitzt. Hierauf lässt man  das Gemisch abkühlen, worauf     abfiltriert     wird. Der feste Rückstand wird mit kaltem       Äthylacetat    gewaschen und aus Wasser um  kristallisiert.

   Auf diese Weise erhält man       N1    - 3,4 -     Dichlorphenyl    - N' -     äthylbiguanid    in  Form seines     Monohydrochlorids,    welches bei  216  C schmilzt.



  Process for the preparation of a biguanide derivative. 1) The present invention relates to a process for the preparation of N'-3,4-di-elilorplieriyl-N'-ethylbiguanide, which is a valuable chemotherapeutic agent or can be used as an intermediate for the preparation of chemotherapeutic agents. It is a particularly valuable antimalarial drug.



  According to the invention, said new compound, namely N'-3,4-dichlorophenyl-N --'- äthyll) iguanid, is obtained by reacting N "- # '# @ thy ldieyandiamide with 3,4-dichloroaniline.



  The reaction is conveniently carried out by heating a salt of the amine with your substituted dicyandiamide in the presence of a solvent, such as. B. water or ß-Ätlioxyätlianol.



  The N1-3,4-diclilorphenyl-N'-äthylbiguanid is a strong base which, with organic and inorganic acids, results in stable salts which in some cases are easily soluble in water. The salts can be prepared by dissolving the base in aqueous solutions of the acid and then evaporating the water, but they can be more conveniently prepared in dry form by mixing the components in an organic solvent, such as e.g. B. acetone, or in one. Alcohol in which the salts are sparingly soluble can be produced.

   In this way, for example, the salts with acetic acid, lactic acid, methanesulfonic acid, methylenedisalicylic saturation, methylene-bis-f-oxynaphthoic acid and hydrochloric acid can be conveniently prepared.



  The following example serves to explain the invention.



       Example: A mixture of 12.3 parts of N "- Ethy 1-dicyandiamide and 19.85 parts of 3,4-dichloroaniline chlorohydrate in 100 parts of '- Ethoxy ethanol is refluxed for 3 hours The mixture is then allowed to cool, whereupon it is filtered off, the solid residue is washed with cold ethyl acetate and recrystallized from water.

   In this way, N1 - 3,4 - dichlorophenyl - N '- ethyl biguanide is obtained in the form of its monohydrochloride, which melts at 216 ° C.

 

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung von N'-3,4-Di- chlorphenyl -N' - äthylbiguanid, dadurch ge kennzeichnet, dass man N3-Athyldicy andiamid mit 3,4-Dichloranilin umsetzt. Das N1-3,4-Dichlorphenyl-N'-äthylbiguanid ist eine starke Base, deren Monohydrochlorid bei 216 C schmilzt. Die neue Base besitzt kräftige Antimalariaeigenschaften. PATENT CLAIM: Process for the production of N'-3,4-dichlorophenyl -N '- äthylbiguanid, characterized in that N3-Ethyldicyandiamid is reacted with 3,4-dichloroaniline. N1-3,4-dichlorophenyl-N'-ethylbiguanide is a strong base, the monohydrochloride of which melts at 216.degree. The new base has powerful anti-malarial properties.
CH259666D 1945-10-08 1946-10-08 Process for the preparation of a biguanide derivative. CH259666A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB259666X 1945-10-08
GB170946X 1946-09-17
CH254800T 1946-10-08

Publications (1)

Publication Number Publication Date
CH259666A true CH259666A (en) 1949-01-31

Family

ID=27178022

Family Applications (1)

Application Number Title Priority Date Filing Date
CH259666D CH259666A (en) 1945-10-08 1946-10-08 Process for the preparation of a biguanide derivative.

Country Status (1)

Country Link
CH (1) CH259666A (en)

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