CH259707A - Process for the preparation of a biguanide derivative. - Google Patents

Process for the preparation of a biguanide derivative.

Info

Publication number
CH259707A
CH259707A CH259707DA CH259707A CH 259707 A CH259707 A CH 259707A CH 259707D A CH259707D A CH 259707DA CH 259707 A CH259707 A CH 259707A
Authority
CH
Switzerland
Prior art keywords
chloro
preparation
iodophenyl
biguanide
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 CH259707A publication Critical patent/CH259707A/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     N'-3-Chlor-4-          jodphenyl-NS-isopropylbiguanid,    welches ein  wertvolles chemotherapeutisches Mittel ist  oder als Zwischenprodukt für die Herstellung  von     chemotherapeutisehen    Mitteln verwendet  werden kann. Es ist insbesondere ein wert  volles     Antimalariamittel.     



  Erfindungsgemäss wird die besagte neue  Verbindung, nämlich     Nl-3-Chlor-4-jodphenyl-          N5-isopropylbiguanid,    dadurch erhalten, dass  man     N3-Isopropyldicyandiamid    mit     3-Chlor-          4-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-Äthoxyäthanol.     



  Das     Ni-3-Chlor-4-jodphenyl-Ng-isopropyl-          biguanid    stellt eine starke Base dar, welche  mit organischen und anorganischen Säuren  beständige Salze ergibt, die in manchen Fäl  len 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-          n.a,phthoesäure    und Salzsäure bequem her  stellen.  



  Das folgende Beispiel diene zur Erläute  rung der Erfindung.  



  <I>Beispiel:</I>  Ein Gemisch von 12,6 Teilen     N3-Isopropyl.-          clicyandiamid    und 29,2 Teilen     3-Chlor-4-jod-          anilin-chlorhydrat    in 100 Teilen     fl'-Äthoxy-          äthanol    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       Äthylacetat    gewaschen und aus Wasser um  kristallisiert.

   Auf diese Weise erhält man     Nl-          3-Chlor-4-jodphenyl-N'-isopropylbiguanid    in  Form seines     Monohydrochlorids,    welches bei  220 bis 222  C schmilzt.



  Process for the preparation of a biguanide derivative. The present invention relates to a process for the preparation of N'-3-chloro-4-iodophenyl-NS-isopropyl biguanide which is a valuable chemotherapeutic agent or which 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-3-chloro-4-iodophenyl-N5-isopropyl biguanide, is obtained by reacting N3-isopropyldicyandiamide with 3-chloro-4-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-ethoxyethanol.



  Ni-3-chloro-4-iodophenyl-Ng-isopropyl biguanide 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 prepared by dissolving the base in aqueous solutions of the acid and then evaporating the water, but they can pass through more conveniently in dry form. 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-ss-oxy-n.a, phthoic acid and hydrochloric acid can be conveniently prepared.



  The following example serves to explain the invention.



  <I> Example: </I> A mixture of 12.6 parts of N3-isopropyl.-clicyandiamide and 29.2 parts of 3-chloro-4-iodoaniline chlorohydrate in 100 parts of fl'-ethoxyethanol is used for 3 Heated to boiling under reflux for 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, Nl-3-chloro-4-iodophenyl-N'-isopropyl biguanide is obtained in the form of its monohydrochloride, which melts at 220 to 222.degree.

 

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung von Nl-3-Chlor- 4-jodphenyl-NS-isopropylbiguanid, dadurch gekennzeichnet, dass man Ns-Isopropyldicyan- di.amid mit 3-Chlor-4-jodanilin umsetzt. Das Nl-3-Chlor-4-jodphenyl-N5-isopropyl- biguanid ist eine starke Base, deren Mono- hydrochlorid bei 220 bis 222 C schmilzt. Die neue Base besitzt kräftige Antimalariacigen- schaften. PATENT CLAIM: Process for the production of Nl-3-chloro-4-iodophenyl-NS-isopropylbiguanide, characterized in that Ns-isopropyldicyandi.amide is reacted with 3-chloro-4-iodaniline. Nl-3-chloro-4-iodophenyl-N5-isopropyl biguanide is a strong base, the monohydrochloride of which melts at 220 to 222.degree. The new base has powerful antimalarial properties.
CH259707D 1945-10-08 1946-10-08 Process for the preparation of a biguanide derivative. CH259707A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB259707X 1945-10-08
GB170946X 1946-09-17
CH254800T 1946-10-08

Publications (1)

Publication Number Publication Date
CH259707A true CH259707A (en) 1949-01-31

Family

ID=27178063

Family Applications (1)

Application Number Title Priority Date Filing Date
CH259707D CH259707A (en) 1945-10-08 1946-10-08 Process for the preparation of a biguanide derivative.

Country Status (1)

Country Link
CH (1) CH259707A (en)

Similar Documents

Publication Publication Date Title
CH259707A (en) Process for the preparation of a biguanide derivative.
CH259704A (en) Process for the preparation of a biguanide derivative.
CH259698A (en) Process for the preparation of a biguanide derivative.
CH259713A (en) Process for the preparation of a biguanide derivative.
CH259706A (en) Process for the preparation of a biguanide derivative.
CH259708A (en) Process for the preparation of a biguanide derivative.
CH259699A (en) Process for the preparation of a biguanide derivative.
CH259654A (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.
CH259660A (en) Process for the preparation of a biguanide derivative.
CH259709A (en) Process for the preparation of a biguanide derivative.
CH259677A (en) Process for the preparation of a biguanide derivative.
CH259703A (en) Process for the preparation of a biguanide derivative.
CH259661A (en) Process for the preparation of a biguanide derivative.
CH254800A (en) Process for the preparation of a biguanide derivative.
CH259663A (en) Process for the preparation of a biguanide derivative.
CH259681A (en) Process for the preparation of a biguanide derivative.
CH259693A (en) Process for the preparation of a biguanide derivative.
CH259689A (en) Process for the preparation of a biguanide derivative.
CH259683A (en) Process for the preparation of a biguanide derivative.
CH259662A (en) Process for the preparation of a biguanide derivative.
CH259672A (en) Process for the preparation of a biguanide derivative.
CH259673A (en) Process for the preparation of a biguanide derivative.
CH259653A (en) Process for the preparation of a biguanide derivative.