CH259650A - Process for the preparation of a biguanide derivative. - Google Patents

Process for the preparation of a biguanide derivative.

Info

Publication number
CH259650A
CH259650A CH259650DA CH259650A CH 259650 A CH259650 A CH 259650A CH 259650D A CH259650D A CH 259650DA CH 259650 A CH259650 A CH 259650A
Authority
CH
Switzerland
Prior art keywords
preparation
biguanide derivative
base
water
acid
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 CH259650A publication Critical patent/CH259650A/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)
  • Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)

Description

  

  Verfahren zur Herstellung eines     Biguanidderivates.       Die vorliegende Erfindung betrifft ein  Verfahren zur Herstellung von     NI-p-Chlor-          hhenyl-N'-n-propylbiguanid,    welches     eile    wert  volles chemotherapeutisches Mittel ist oder  als Zwischenprodukt für die Herstellung von  chemotherapeutischen Mitteln verwendet. wer  den kann. Es ist insbesondere ein wertvolles       Antimalariamittel.     



  Erfindungsgemäss wird die besagte neue  Verbindung, nämlich     NI-p-Chlorphenyl-N'-n-          propylbiguanid,    dadurch erhalten, dass man       N'-n-Propyldicyandianlid    mit     p-Chloranilin          umsetzt.     



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



  Das     NI-p-Clllorphenyl-N'-n-propylbigizanid     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 sieh da  durch 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 Lö  sungsmittel, wie z. B. Aceton, oder in eitlem  Alkohol, in welchem die Salze spärlich lös  lich sind, hergestellt werden.

   Auf diese Weise  kann man beispielsweise die Salze mit Essig  säure, Milchsäure,     Methansulfonsäure,    Methy-         lendisalicylsäitre,        Methylen-bis-ss-oxynaphthoe-          säure    und Salzsäure bequem herstellen.  



  Das folgende Beispiel diene zur Erläute  rung der Erfindung.  



  <I>Beispiel:</I>  Ein Gemisch von 12,6 Teilen N     '-n-Pr        opy    1  dicyandiamid und 24,6 Teilen     p-Chloranilin-          chlorhy        drat    in 200 Teilen Wasser wird wäh  rend 3 Stunden unter Rückfloss zum Sieden  erhitzt. Hierauf lässt man das Gemisch ab  kühlen, worauf     abfiltriert    wird. Der feste  Rückstand wird mit kaltem Wasser gewa  schen und aus Wasser umkristallisiert.

   Auf  diese Weise erhält man     NI-p-Chlorphenyl-N'-          n-propylbigtianid    in Form seines     Monohy        dro-          ehlorids,    welches in die Base übergeführt  wird, die, aus     wässrigem        Äthy        lall#:ohol    um  kristallisiert, bei 58,5-60" C schmilzt.



  Process for the preparation of a biguanide derivative. The present invention relates to a process for the production of NI-p-chloro-hhenyl-N'-n-propylbiguanide, which is a valuable chemotherapeutic agent or used as an intermediate for the preparation of chemotherapeutic agents. can be. It is a particularly valuable antimalarial drug.



  According to the invention, said new compound, namely NI-p-chlorophenyl-N'-n-propyl biguanide, is obtained by reacting N'-n-propyldicyandianlide with p-chloroaniline.



  The implementation takes place. Conveniently by heating a salt of the amine with the -i substituted dicyandiamide in the presence of a solvent, such as. B. water or ss-ethoxyethanol.



  The NI-p-Clllorphenyl-N'-n-propylbigizanid 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 produced by the fact that the base is dissolved in aqueous solutions of the acid and then the water is evaporated, but they can be more convenient in dry form by mixing the components in an organic solvent, such as. B. acetone, or in vain alcohol, in which the salts are sparsely soluble Lich, are prepared.

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



  The following example serves to explain the invention.



  <I> Example: </I> A mixture of 12.6 parts of N'-n-Pr opy 1 dicyandiamide and 24.6 parts of p-chloroaniline chlorohydrate in 200 parts of water is heated to boiling under reflux for 3 hours . The mixture is then left to cool, whereupon it is filtered off. The solid residue is washed with cold water and recrystallized from water.

   In this way, NI-p-chlorophenyl-N'-n-propylbigtianide is obtained in the form of its monohydrochloride, which is converted into the base, which crystallizes from aqueous ethyl alcohol at 58.5-60 "C is melting.

 

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung von NI-p- Clllorphenyl -N' -1l -propy lbiguanid, dadurch gekennzeichnet, dass .man N'-n-Propyldicy an diamid mit p-Chloranilin umsetzt. Das NI-p-Chlorphenyl-N'-n-propylbiguanid ist eine starke Base, deren Acetat bei 164 bis 165 C schmilzt. Die Base selbst schmilzt bei 58,5-60 C. Die neue Base besitzt kräftige Antimalariaeigenschaften. PATENT CLAIM: Process for the production of NI-p-Clllorphenyl -N '-1l -propy lbiguanid, characterized in that .man converts N'-n-Propyldicy to diamide with p-chloroaniline. NI-p-chlorophenyl-N'-n-propylbiguanide is a strong base, the acetate of which melts at 164 to 165 ° C. The base itself melts at 58.5-60 C. The new base has powerful anti-malarial properties.
CH259650D 1945-10-08 1946-10-08 Process for the preparation of a biguanide derivative. CH259650A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB259650X 1945-10-08
GB170946X 1946-09-17
CH254800T 1946-10-08

Publications (1)

Publication Number Publication Date
CH259650A true CH259650A (en) 1949-01-31

Family

ID=27178006

Family Applications (1)

Application Number Title Priority Date Filing Date
CH259650D CH259650A (en) 1945-10-08 1946-10-08 Process for the preparation of a biguanide derivative.

Country Status (1)

Country Link
CH (1) CH259650A (en)

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