CH259710A - Process for the preparation of a biguanide derivative. - Google Patents

Process for the preparation of a biguanide derivative.

Info

Publication number
CH259710A
CH259710A CH259710DA CH259710A CH 259710 A CH259710 A CH 259710A CH 259710D A CH259710D A CH 259710DA CH 259710 A CH259710 A CH 259710A
Authority
CH
Switzerland
Prior art keywords
preparation
chloro
methyl
iodophenyl
biguanide derivative
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 CH259710A publication Critical patent/CH259710A/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     N1-3-Chlor-4-          ,jodphenyl    - N 5 -     nietliyl    -     N:-,    -     isopropylbiguanid,          -%aelches    ein wertvolles     chemotherapeutisehes     Mittel ist oder als Zwischenprodukt für die  Herstellung von chemotherapeutischen Mit  teln verwendet werden kann. Es ist insbeson  dere ein wertvolles     Antimalariamittel.     



  Erfindungsgemäss wird die     besagte    neue       Verbindung,        e-,        nämlich        N        1-3-Chlor-4-jodpheny        1-          NI-methyl-N",-isopropyIbig-ianid,    dadurch er  halten, dass     man        N3-hlethyl-N3-isopropyl-          dicyaudiamid    mit     3-Chlor-4-jodanilin    um  setzt.  



  Die Umsetzung erfolgt zweckmässig durch  Erhitzen eines Salzes des Amins mit dem sub  stituierten     Dicyandiamid    in     fTegen-%vart    eines       Lösungsmittels,        -vie    z. B. Wasser oder     ss-          @1thor-väthanol.     



  Das     N1-3-Clilor-4-jodphenyl-N -methyl-N5-          isopropylbiguanid    stellt eine starke Base dar,  welche mit organischen. und anorganischen  Säuren beständige Salze ergibt, die in man  chen Fällen     in    Wasser leicht. löslich sind.  Die Salze lassen sieh dadurch herstellen, dass  die Base in     wässrigen        Lös-uigen    der Säure ge  löst 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,        Methylendisalicylsäu        re,        111ethylen-bis-p-          oxynapht.hoesäure    und     Salzsäure    bequem her  stellen.  



  Das folgende Beispiel diene zur Erläute  rung der Erfindung.    <I>Beispiel:</I>  Ein Gemisch von 14 Teilen     N3-lslethyl-N3-          isoprop@-ldieyandiamid    und 29 Teilen     3-Chlor-          4-jodanilin-ehlorhydrat    in 120 Teilen       Athoxyäthanol    wird während 3 Stunden     -unter          Rüekfluss    zum Sieden erhitzt. Hierauf lässt  man das Gemisch abkühlen, worauf     abfiltriert     wird. Der feste Rückstand wird mit kaltem       Athylacetat    gewaschen und aus Wasser um  kristallisiert.

   Auf diese Weise erhält. man N1  3 -     Chlor-4-j        odphenyl        -N'        -methyl-N        '-isopropyl-          biguanid    in Form seines     Monohy        drochlorids,     welches bei 231 C     schmilzt.  



  Process for the preparation of a biguanide derivative. The present invention relates to a process for the preparation of N1-3-chloro-4-, iodophenyl - N 5 - nietliyl - N: -, - isopropylbiguanide, -% which is a valuable chemotherapeutic agent or as an intermediate for the preparation of chemotherapeutic agents can be used. It is especially a valuable antimalarial agent.



  According to the invention, the said new compound, e-, namely N 1-3-chloro-4-iodopheny 1- NI-methyl-N ", - isopropyIbig-ianid, is obtained by using N3-methyl-N3-isopropyl-dicyaudiamide with 3-chloro-4-iodaniline.



  The reaction is conveniently carried out by heating a salt of the amine with the sub-substituted dicyandiamide in fTegen-% vart of a solvent, -vie z. B. water or ss- @ 1thor-väthanol.



  The N1-3-Clilor-4-iodophenyl-N -methyl-N5-isopropylbiguanid is a strong base, which with organic. and inorganic acids results in stable salts, which in some cases easily in water. are soluble. 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 an alcohol in which the salts are sparingly soluble.

   In this way, for example, the salts with acetic acid, lactic acid, methanesulfonic acid, methylenedisalicylic acid, 111ethylene-bis-p-oxynaphthoic acid and hydrochloric acid can be conveniently prepared.



  The following example serves to explain the invention. <I> Example: </I> A mixture of 14 parts of N3-islethyl-N3-isoprop®-ldieyandiamide and 29 parts of 3-chloro-4-iodaniline chlorohydrate in 120 parts of ethoxyethanol is heated to boiling for 3 hours under reflux . The mixture is then allowed to cool and it is filtered off. The solid residue is washed with cold ethyl acetate and recrystallized from water.

   That way it gets. one N1 3 - chloro-4-iodophenyl -N '-methyl-N' -isopropyl biguanid in the form of its Monohy drochlorids, which melts at 231C.

 

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung von N'-3-Chlor- 4-jodphenyl - N5-methyl-N--@-isopropylbiguanid, dadurch gekennzeichnet, da.ss man N3-Methyl- N3-isopropyIdicyandiamid mit 3-Chlor-4-jod- anilin umsetzt. Das N1-3-Chlor-4-jodphenyl-N@'-methyl-N'- isopropylbiguanid ist eine starke Base, deren Monohydrochlorid bei 231 C schmilzt. Die neue Base besitzt kräftige Antimalariaeigen-. sehalten. PATENT CLAIM: A process for the preparation of N'-3-chloro-4-iodophenyl - N5-methyl-N - @ - isopropyl biguanide, characterized in that N3-methyl-N3-isopropyidicyandiamide is used with 3-chloro-4-iodine - converts aniline. The N1-3-chloro-4-iodophenyl-N @ '- methyl-N'-isopropyl biguanide is a strong base whose monohydrochloride melts at 231 ° C. The new base has strong antimalarial properties. see.
CH259710D 1945-10-08 1946-10-08 Process for the preparation of a biguanide derivative. CH259710A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB259710X 1945-10-08
GB170946X 1946-09-17
CH254800T 1946-10-08

Publications (1)

Publication Number Publication Date
CH259710A true CH259710A (en) 1949-01-31

Family

ID=27178066

Family Applications (1)

Application Number Title Priority Date Filing Date
CH259710D CH259710A (en) 1945-10-08 1946-10-08 Process for the preparation of a biguanide derivative.

Country Status (1)

Country Link
CH (1) CH259710A (en)

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