CH259665A - Process for the preparation of a biguanide derivative. - Google Patents

Process for the preparation of a biguanide derivative.

Info

Publication number
CH259665A
CH259665A CH259665DA CH259665A CH 259665 A CH259665 A CH 259665A CH 259665D A CH259665D A CH 259665DA CH 259665 A CH259665 A CH 259665A
Authority
CH
Switzerland
Prior art keywords
preparation
biguanide derivative
acid
biguanide
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 CH259665A publication Critical patent/CH259665A/en

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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     N'-3,-I-Di-          ehlorl>lienyl-N        '-n-propylbiguanid,welches    ein  wertvolles     chemotherapeutisches    Mittel ist  oder als     Zwischenprodukt    für die Herstellung  von     ehemotherapeutisehen    Mitteln verwendet  werden kann. Es ist insbesondere ein wert  volles     Antimalariamittel.     



  Erfindungsgemäss wird die besagte neue  Verbindung, nämlich     N'-3,4-Dichlorphenyl-          N'-n-propylbiguanid,    dadurch erhalten, dass  man     N:'-n-Propyldicyandiainid    mit.     3,4=Di-          chloranilin    umsetzt.  



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



  Das     N'-3,4-Diclilorphenyl-N'-n-propz-1-          biguanid    stellt eine starke Base dar, welche  mit organischen und anorganischen Säuren  beständige Salze ergibt, die in     manehen     Fällen in Wasser leicht     löslieh    sind. Die Salze  lassen sieh dadurch herstellen, dass die     Base     in     wässrigen    Lösungen der Säure gelöst     und     hierauf das Wasser verdampft wird, doch  können sie in trockener Form bequemer       dureli    Vermischen der     Komponenten    in einem       ornanisehen    Lösungsmittel, wie z. B.

   Aceton,  oder in einem Alkohol, in welchem die Salze  spärlich löslich sind, hergestellt werden. Auf  diese Weise kann     inan        beispielsweise    die Salze    mit Essigsäure,     lIilchsättre,        Methansulfon-          säure,        lletliyleiidisalie5-lsäure,        Metliylen-bis-P-          oxynaphthoesäure    und Salzsäure bequem her  stellen.  



  Das folgende Beispiel diene     zur    Erläute  rung der Erfindung.         Beispiel:     Bin Gemisch von 13,9 Teilen     N 1-n-Pr        opy    1  dieyandiamid und 19,85 Teilen     3,4-Dichlor-          anilin-chlorhydrat    in 100 Teilen     P-Äthox@--          ät.lianolwird    während 3 Stunden unter     Rüek-          fluss        zuin    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       N'-3,4-Dichlorphenyl-N        I-n-propylbiguanid    in  Form seines     Monohydrochlorids,    welches bei       \?37-238"    C schmilzt.



  Process for the preparation of a biguanide derivative. The present invention relates to a process for the preparation of N'-3, -I-di-ehlorl> lienyl-N'-n-propylbiguanide, which is a valuable chemotherapeutic agent or can be used as an intermediate for the preparation of former therapeutic agents. It is a particularly valuable antimalarial drug.



  According to the invention, said new compound, namely N'-3,4-dichlorophenyl-N'-n-propylbiguanide, is obtained by reacting with N: '- n-propyldicyandiainide. 3.4 = dichloroaniline converts.



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



  The N'-3,4-diclilorphenyl-N'-n-propz-1-biguanide is a strong base which, with organic and inorganic acids, gives stable salts which in some cases are easily soluble in water. The salts can be produced by dissolving the base in aqueous solutions of the acid and then evaporating the water, but in dry form they can be more conveniently by mixing the components in an organic solvent, such as e.g. B.

   Acetone, or in an alcohol in which the salts are sparingly soluble. In this way, for example, the salts with acetic acid, lactic acid, methanesulfonic acid, lletliyleiidisalic-oleic acid, methylene-bis-oxynaphthoic acid and hydrochloric acid can be conveniently prepared.



  The following example serves to explain the invention. Example: A mixture of 13.9 parts of N 1-n-Pr opy 1 dieyandiamid and 19.85 parts of 3,4-dichloro-aniline chlorohydrate in 100 parts of P-ethox @ - ät.lianol is for 3 hours under Rüek- river heated to boiling point. The mixture is then allowed to cool and it is filtered off.

   The solid residue is washed with cold ethyl acetate and crystallized from 'water. In this way, N'-3,4-dichlorophenyl-N I-n-propyl biguanide is obtained in the form of its monohydrochloride, which melts at 37-238 "C.

 

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung von N'-3,4- Di- clilorplienyl-X'-n-pr opylbi-uanid, dadurch ge kennzeichnet, dass man 1\'-n-Propyldie;-an- diamid mit 3,4-Dichloranilin umsetzt. Das N'-3,4-Diehlorplienyl-N'-n-propyl- biguanid ist eine starke Base, deren Mono- l,vdrochlorid bei 237-238 C schmilzt. PATENT CLAIM: A process for the preparation of N'-3,4-dichloroplienyl-X'-n-propylbi-uanide, characterized in that 1 \ '- n-propyldie; -aniamide with 3,4- Dichloroaniline converts. N'-3,4-Diehlorplienyl-N'-n-propyl-biguanid is a strong base, the monol, hydrochloride of which melts at 237-238 ° C. Die neue Base besitzt kräftige Antima.lariaeigen- schaften. The new base has strong antimalarial properties.
CH259665D 1945-10-08 1946-10-08 Process for the preparation of a biguanide derivative. CH259665A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB259665X 1945-10-08
GB170946X 1946-09-17
CH254800T 1946-10-08

Publications (1)

Publication Number Publication Date
CH259665A true CH259665A (en) 1949-01-31

Family

ID=27178021

Family Applications (1)

Application Number Title Priority Date Filing Date
CH259665D CH259665A (en) 1945-10-08 1946-10-08 Process for the preparation of a biguanide derivative.

Country Status (1)

Country Link
CH (1) CH259665A (en)

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