CH259714A - Process for the preparation of a biguanide derivative. - Google Patents

Process for the preparation of a biguanide derivative.

Info

Publication number
CH259714A
CH259714A CH259714DA CH259714A CH 259714 A CH259714 A CH 259714A CH 259714D A CH259714D A CH 259714DA CH 259714 A CH259714 A CH 259714A
Authority
CH
Switzerland
Prior art keywords
preparation
bromo
iodophenyl
isopropylbiguanide
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 CH259714A publication Critical patent/CH259714A/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)
  • Agricultural Chemicals And Associated Chemicals (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     N'-3-Brom-4-          jodphenyl    -     N'-    in     etliyl    -     N'    -     isopi'opylbiguanid,     welches ein wertvolles     chemotherapeutisches     Mittel ist oder als     Zwisehenprodukt    für die  Herstellung von chemotherapeutischen Mitteln       verwendet    werden kann. Es ist insbesondere  ein wertvolles     Antimalariamittel.     



       Erfinclungsgemäss    wird die besagte neue  Verbindung, nämlich     N1-3-Brom-4-jodphenyl-          N'-niethyl-N        '-isopropylbiguanid,    dadurch er  lialten, dass man     N'-lletliyl-N'-isopropyl-          dieyanclianiid    mit     3-Brom-4-jodanilin        -umsetzt.     



  Die     Umsetzung        erfolgt        nveckmässig    durch  Erhitzen eines Salzes des minn mit dem sub  stituierten     Dieyandiamid    in Gegenwart eines       Lösungsmittels,    wie z. B. Wasser oder     ss-          Äthoxyäthanol.     



  Das     Nl-3-Brom-4-jodphenyl-N'-methyl-N'-          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       hssigsättre,    Milchsäure,     3lethansulfonsäure,            Methj-lendisalic3-lsäure,        Methylen-bis-f-oxy-          naphthoesäure    und Salzsäure bequem her  stellen.  



  Das folgende Beispiel diene zur Erläute  rung der Erfindung.    <I>Beispiel:</I>    Ein Gemisch von 13,0 Teilen     N3-Methyl-          N'-isopropyldicy        andiamid    und 23,4 Teilen     3-          Brom-4-jodanilin-ehlorhydrat    in 70 Teilen  Wasser 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  Wasser gewaschen und aus Wasser umkri  stallisiert.

   Auf diese Weise erhält man N1-3  Brom- 4 -     jodphenyl        -N'    -     methy        1-N'-        isopropyl-          biguanid    in Form seines     Monohydrochlorids,          ,v        elches    bei 232 bis 233  C schmilzt.



  Process for the preparation of a biguanide derivative. The present invention relates to a process for the preparation of N'-3-bromo-4-iodophenyl-N'- in etliyl-N'-isopi'opylbiguanide, which is a valuable chemotherapeutic agent or used as a by-product for the preparation of chemotherapeutic agents can be. It is a particularly valuable antimalarial drug.



       According to the invention, the said new compound, namely N1-3-bromo-4-iodophenyl-N'-niethyl-N'-isopropylbiguanide, is produced by adding N'-lletliyl-N'-isopropyl-dieyanclianiide with 3-bromo 4-iodaniline -reacts.



  The reaction takes place by heating a salt of the minn with the sub-substituted Dieyandiamid in the presence of a solvent, such as. B. water or ss- ethoxyethanol.



  The Nl-3-bromo-4-iodophenyl-N'-methyl-N'-isopropylbiguanide is a strong base which gives stable salts with organic and inorganic acids, which in some cases easily in water. are soluble. The salts can be prepared in 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 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, methanesulphonic acid, methj-lendisalic-lic acid, methylene-bis-f-oxynaphthoic acid and hydrochloric acid can be conveniently prepared.



  The following example serves to explain the invention. <I> Example: </I> A mixture of 13.0 parts of N3-methyl-N'-isopropyldicyandiamide and 23.4 parts of 3-bromo-4-iodaniline-chlorohydrate in 70 parts of water is refluxed for 3 hours heated to boiling. The mixture is then allowed to cool and it is filtered off. The solid residue is washed with cold water and crystallized umkri from water.

   In this way, N1-3 bromine-4-iodophenyl -N'-methy 1-N'-isopropyl biguanide is obtained in the form of its monohydrochloride, which melts at 232 to 233 ° C.

 

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung von N1-3-Brom- -4-jodphenyl-N'-methyl-N'-isopropyIbiguanid, dadurch gekennzeichnet, dass man N'-llethyl- N"-isopropyIdicy andianüd mit. 3-Brom-4-jod- anilin umsetzt. , Das N'-3-Brom-4-jodphenyl-N'-methyl-N'- isopropylbiguanid ist eine starke Base, deren llonohydrochlorid bei 232 bis 233 C schmilzt. Die neue Base besitzt kräftige Antimalaria eigenschaften. PATENT CLAIM: A process for the preparation of N1-3-bromo--4-iodophenyl-N'-methyl-N'-isopropylbiguanide, characterized in that N'-llethyl-N "-isopropyIdicy andianeüd with. 3-bromo-4- iodine aniline converts., The N'-3-bromo-4-iodophenyl-N'-methyl-N'-isopropylbiguanide is a strong base whose ionohydrochloride melts at 232 to 233 C. The new base has powerful antimalarial properties.
CH259714D 1945-10-08 1946-10-08 Process for the preparation of a biguanide derivative. CH259714A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB259714X 1945-10-08
GB170946X 1946-09-17
CH254800T 1946-10-08

Publications (1)

Publication Number Publication Date
CH259714A true CH259714A (en) 1949-01-31

Family

ID=27178070

Family Applications (1)

Application Number Title Priority Date Filing Date
CH259714D CH259714A (en) 1945-10-08 1946-10-08 Process for the preparation of a biguanide derivative.

Country Status (1)

Country Link
CH (1) CH259714A (en)

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