CH259648A - Process for the preparation of a biguanide derivative. - Google Patents

Process for the preparation of a biguanide derivative.

Info

Publication number
CH259648A
CH259648A CH259648DA CH259648A CH 259648 A CH259648 A CH 259648A CH 259648D A CH259648D A CH 259648DA CH 259648 A CH259648 A CH 259648A
Authority
CH
Switzerland
Prior art keywords
preparation
methyl
biguanide derivative
melts
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 CH259648A publication Critical patent/CH259648A/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     lIerstelhing    von     N'-p-Chlor-          hlienyl-N'-inetliyl-N'-isopropylbiguanid,        wel.-          ehes    ein wertvolles chemotherapeutisches Mit  tel ist oder als     Zwischenprodukt    für die Ver  stellung von chemotherapeutischen Mitteln  verwendet werden kann. Es ist insbesondere  ein wertvolles     Antimalariamittel.     



  Erfindungsgemäss wird die besagte neue  Verbindung, nämlich     N'-p-Chlorplienyl-N'-          methyl-N'-isopropylbiguanid,    dadurch erhal  ten, dass man     N3-11Tethyl-N@>-isopropyldicyan-          diainid    mit     p-Chloranilin    umsetzt.  



  Die     Umsetzung    erfolgt     zweckmässig    durch  Erhitzen eines Salzes des Amins mit dein  substituierten     Dic,v        andiamid    in Gegenwart  eines Lösungsmittels, wie z. B.     Wasser    oder       i,'-,1thoxyäthanol.     



  Das     N'-p-Chlorphenyl.-N'-methyl-N'-iso-          propylbiguanid    stellt eine starke Base dar,  welche mit     organischen    und anorganischen  Säuren beständige Salze ergibt, die in     man-          ehen    Fällen in Wasser leicht     4slieh    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  organischen Lösungsmittel, wie z. B.

   Aceton,  oder in einem Alkohol, in welchem die Salze  spärlich löslich sind, hergestellt werden. Auf  diese Weise kann     nian    beispielsweise die Salze       finit    Essigsäure, Milchsäure,     Methansulfon-          säure,        Metii3#lendisalicy        lsäure,    Methylen-bis-         ss-oxynaphthoesäure    und Salzsäure bequem  herstellen.  



  Das folgende Beispiel diene zur Erläute  rung der Erfindung.  



  <I>Beispiel:</I>  Ein Gemisch von 14,0 Teilen     N;-Methyl-N--          isopropyldicyandiamid    und 18 Teilen     p-Chlor-          a.nilin-chlorhydrat    in 150 Teilen Wasser wird  während 3 Stunden unter     Rückfluh    zum Sie  den erhitzt. Hierauf lässt man das Gemisch  abkühlen, worauf     abfiltriert    wird. Der feste  Rückstand wird mit kaltem     Äthylacetat    ge  waschen und aus Wasser umkristallisiert.

    Auf diese Weise erhält man     N'-p-Chlor-          phenyl-N'-methyl-N'-isopropylbiguanid    in  Form seines     Monohydroehlorids,    welches bei       245-246     C schmilzt. Die freie Base schmilzt  bei     174-175     C, ihr Acetat bei 212" C.



  Process for the preparation of a biguanide derivative. The present invention relates to a. Process for the production of N'-p-chlorohlienyl-N'-ethyl-N'-isopropylbiguanide, wel.- before a valuable chemotherapeutic agent is or can be used as an intermediate for the adjustment of chemotherapeutic agents. It is a particularly valuable antimalarial drug.



  According to the invention, said new compound, namely N'-p-chloroplienyl-N'-methyl-N'-isopropylbiguanide, is obtained by reacting N3-11Tethyl-N @> - isopropyldicyandiainide with p-chloroaniline.



  The reaction is conveniently carried out by heating a salt of the amine with your substituted dic, v andiamide in the presence of a solvent, such as. B. water or i, '-, 1thoxyethanol.



  N'-p-chlorophenyl.-N'-methyl-N'-isopropyl biguanide is a strong base which, with organic and inorganic acids, gives stable salts which in some cases are easily dissolvable in water. 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 conveniently in dry form by mixing the components in an organic solvent, such as. B.

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



  The following example serves to explain the invention.



  <I> Example: </I> A mixture of 14.0 parts of N; -methyl-N- isopropyldicyandiamide and 18 parts of p-chloro-a.niline chlorohydrate in 150 parts of water is refluxed for 3 hours heated. 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, N'-p-chlorophenyl-N'-methyl-N'-isopropyl biguanide is obtained in the form of its monohydrochloride, which melts at 245-246 ° C. The free base melts at 174-175 C, its acetate at 212 "C.

 

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung von N'-p- Chlorphenyl-N'-methy 1=N'-isopropy lbiguanid, dadurch gekennzeichnet, dass man N@-Methyl.- N'-isopropyldieyandiamid mit p-Chloranilin hinsetzt. Das N'-p-Clilorphenyl-N'-methyl-N'-iso- propylbiguanid ist eine starke Base vom Smp. 7.74-r75 C, deren '#\lonohydrochlorid bei 245 bis 246 C und deren Acetat bei 212" C schmilzt. PATENT CLAIM: Process for the preparation of N'-p-chlorophenyl-N'-methy 1 = N'-isopropy lbiguanide, characterized in that N @ -methyl.-N'-isopropyldiyandiamide is added with p-chloroaniline. The N'-p-clilorphenyl-N'-methyl-N'-isopropyl biguanide is a strong base with a melting point of 7.74 ° -75 ° C., whose hydrochloride melts at 245 to 246 ° C. and the acetate of which melts at 212 ° C. Die neue Base besitzt kräftige Anti- inalariaeigenschaften. The new base has strong anti-alarial properties.
CH259648D 1945-10-08 1946-10-08 Process for the preparation of a biguanide derivative. CH259648A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB259648X 1945-10-08
GB170946X 1946-09-17
CH254800T 1946-10-08

Publications (1)

Publication Number Publication Date
CH259648A true CH259648A (en) 1949-01-31

Family

ID=27178004

Family Applications (1)

Application Number Title Priority Date Filing Date
CH259648D CH259648A (en) 1945-10-08 1946-10-08 Process for the preparation of a biguanide derivative.

Country Status (1)

Country Link
CH (1) CH259648A (en)

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