CH259706A - Process for the preparation of a biguanide derivative. - Google Patents

Process for the preparation of a biguanide derivative.

Info

Publication number
CH259706A
CH259706A CH259706DA CH259706A CH 259706 A CH259706 A CH 259706A CH 259706D A CH259706D A CH 259706DA CH 259706 A CH259706 A CH 259706A
Authority
CH
Switzerland
Prior art keywords
bromo
preparation
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 CH259706A publication Critical patent/CH259706A/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.       Die vorliegende Erfindung betrifft ein  Verfahren. zur Herstellung von     Nl-4-Brom-3-          jodplieny        l-N'        -methy        1-N'-        isopropylbiguanid,     welches ein wertvolles chemotherapeutische  Mittel ist oder als Zwischenprodukt für die  Herstellung von chemotherapeutischen Mitteln  verwendet werden kann. Es ist insbesondere  ein wertvolles     Antimalariamittel.     



  Erfindungsgemäss wird die besagte neue  Verbindung, nämlich     Nl-4-Brom-3-jodphenyl-          N -methyl-NS-isopropylbiguanid,    dadurch er  halten, dass man     N3-Methyl-N3-isopropyl-          dieyandiamid    mit     4-Brom-3-jodanilin    umsetzt.  



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



  Das     Ni-4-Brom-3-jodphenyl-N'-methyl-NT'-          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 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 orga  nischen Lösungsmittel, wie z. B. Aceton, oder  in einem Alkohol, in welchem die Salze spär  lich löslich sind, hergestellt werden.

   Auf diese  Weise kann man beispielsweise die Salze mit  Essigsäure, Milchsäure,     Methansulfonsäure,            Methylendisalicylsäure,        Methylen-bis-ss-oxy-          naphthoesäure    und Salzsäure bequem her  stellen.  



  Das folgende Beispiel diene zur Erläute  rung der Erfindung.    <I>Beispiel:</I>    Ein Gemisch von 14 Teilen     N3-Methyl-N3-          isopropyldicyandiamid    und 34 Teilen     4-Brom-          3-jodanilin-chlorhydrat    in 110 Teilen     ss-          Äthoxyäthanol    wird während 3 Stunden unter       R.ückfluss    zum Sieden erhitzt. Hierauf lässt  man das Gemisch abkühlen, worauf     abfiltriert     wird. Der feste Rückstand wird mit kaltem       Xthylacetat    gewaschen und aus Wasser um  kristallisiert.

   Auf diese Weise erhält man NI  4 -Brom- 3 -     jodphenyl-N'-methyl-N        \-isopropy        1-          bigUanid    in Form seines     Monohy        drochlorids,          jvelches    bei 241 bis 242 C schmilzt.



  Process for the preparation of a biguanide derivative. The present invention relates to a method. for the preparation of Nl-4-bromo-3-iodplieny l-N '-methy 1-N'-isopropylbiguanide, 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 Nl-4-bromo-3-iodophenyl-N -methyl-NS-isopropylbiguanide, is obtained by reacting N3-methyl-N3-isopropyl-dieyandiamide with 4-bromo-3-iodaniline .



  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 ss- Äthoxyät.hanol.



  Ni-4-bromo-3-iodophenyl-N'-methyl-NT'-isopropylbiguanide 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 dissolving the base 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 orga African solvent, such as. B. acetone, or in an alcohol in which the salts are sparse Lich soluble, are produced.

   In this way, for example, the salts with acetic acid, lactic acid, methanesulfonic acid, methylenedisalicylic acid, methylene-bis-β-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-methyl-N3- isopropyldicyandiamide and 34 parts of 4-bromo-3-iodaniline chlorohydrate in 110 parts of s-ethoxyethanol is heated to boiling under R. reflux for 3 hours . 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.

   In this way, NI 4 -bromo-3-iodophenyl-N'-methyl-N \ -isopropy 1-bigUanide is obtained in the form of its monohydrochloride, which melts at 241 to 242 C.

 

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung von N'-4-Brom- 3-jodphenyl -N5 -inethyl-N'-isopropylbiguanid, dadurch gekennzeichnet, dass man N3-Methyl- N3-isopropyldicyandiainid mit 4-Brom-3-jod- anilin umsetzt. Das Ni-4-Brom-3-jodphenyl-N'-methyl-N'-. isopropylbiguanid ist eine starke Base, deren Monohydroehlorid bei 241 bis 242" C schmilzt. Die neue Base besitzt kräftige Antimalaria eigenschaften. Claim: Process for the production of N'-4-bromo-3-iodophenyl -N5 -inethyl-N'-isopropylbiguanide, characterized in that N3-methyl-N3-isopropyldicyandiainide is reacted with 4-bromo-3-iodo-aniline. The Ni-4-bromo-3-iodophenyl-N'-methyl-N'-. Isopropyl biguanide is a strong base whose monohydrochloride melts at 241 to 242 "C. The new base has powerful antimalarial properties.
CH259706D 1945-10-08 1946-10-08 Process for the preparation of a biguanide derivative. CH259706A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB259706X 1945-10-08
GB170946X 1946-09-17
CH254800T 1946-10-08

Publications (1)

Publication Number Publication Date
CH259706A true CH259706A (en) 1949-01-31

Family

ID=27178062

Family Applications (1)

Application Number Title Priority Date Filing Date
CH259706D CH259706A (en) 1945-10-08 1946-10-08 Process for the preparation of a biguanide derivative.

Country Status (1)

Country Link
CH (1) CH259706A (en)

Similar Documents

Publication Publication Date Title
CH259706A (en) Process for the preparation of a biguanide derivative.
CH259707A (en) Process for the preparation of a biguanide derivative.
CH259663A (en) Process for the preparation of a biguanide derivative.
CH259654A (en) Process for the preparation of a biguanide derivative.
CH259681A (en) Process for the preparation of a biguanide derivative.
CH259704A (en) Process for the preparation of a biguanide derivative.
CH259660A (en) Process for the preparation of a biguanide derivative.
CH259698A (en) Process for the preparation of a biguanide derivative.
CH259649A (en) Process for the preparation of a biguanide derivative.
CH259714A (en) Process for the preparation of a biguanide derivative.
CH259662A (en) Process for the preparation of a biguanide derivative.
CH259653A (en) Process for the preparation of a biguanide derivative.
CH259703A (en) Process for the preparation of a biguanide derivative.
CH259689A (en) Process for the preparation of a biguanide derivative.
CH259713A (en) Process for the preparation of a biguanide derivative.
CH259677A (en) Process for the preparation of a biguanide derivative.
CH259708A (en) Process for the preparation of a biguanide derivative.
CH259666A (en) Process for the preparation of a biguanide derivative.
CH259679A (en) Process for the preparation of a biguanide derivative.
CH259683A (en) Process for the preparation of a biguanide derivative.
CH259656A (en) Process for the preparation of a biguanide derivative.
CH259699A (en) Process for the preparation of a biguanide derivative.
CH259675A (en) Process for the preparation of a biguanide derivative.
CH259693A (en) Process for the preparation of a biguanide derivative.
CH259694A (en) Process for the preparation of a biguanide derivative.