CH259709A - Process for the preparation of a biguanide derivative. - Google Patents

Process for the preparation of a biguanide derivative.

Info

Publication number
CH259709A
CH259709A CH259709DA CH259709A CH 259709 A CH259709 A CH 259709A CH 259709D A CH259709D A CH 259709DA CH 259709 A CH259709 A CH 259709A
Authority
CH
Switzerland
Prior art keywords
preparation
chloro
biguanide derivative
acid
iodophenyl
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 CH259709A publication Critical patent/CH259709A/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-3-Chlor-4-          jodphenyl-N1-äthylbiguanid,    welches ein wert  volles chemotherapeutisches Mittel ist oder  als Zwischenprodukt für die Herstellung von  chemotherapeutischen Mitteln verwendet wer  den kann. Es ist insbesondere ein wertvolles       Antimalariamittel.     



  Erfindungsgemäss wird die besagte nette  Verbindung, nämlich     Nl-3-Chlor-4-jodphenyl-          NI-äthylbiguanid,    dadurch erhalten, dass man       N'-Äthyldicyandiamid    mit     3-Chlor-4-jodanilin.     umsetzt.  



  Die Umsetzung erfolgt zweckmässig durch  Erhitzen eines Salzes des Amins mit dem sub  stituierten     Dicyandiamid    in Gegenwart eines  Lösungsmittels, wie z. B. Nasser oder       Ätlioxyäthanol.     



  Das     Nl-3-Clilor-4-jodpllenyl-N'-äthylbigua-          nid    stellt eine starke Base dar, welche mit  organischen und anorganischen Säuren be  ständige Salze ergibt, die in manchen Fällen  in Wasser leicht löslich sind. Die Salze lassen  sich dadurch herstellen, dass die Base in     wäss-          rigen    Lösungen der Säure gelöst und hierauf  das Wasser verdampft wird, doch können sie  in trockener Form bequemer durch Vermi  schen 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,     Methansulfonsäure,          Methylendisalicylsäure,        Methylen-bis-ss-oxy-          liaphthoesäure    und Salzsäure bequem her  stellen.  



  Das folgende Beispiel diene zur Erläute  rung der Erfindung.  



  <I>Beispiel:</I>  Ein Gemisch von 11,2 Teilen     N3-Äthyl-          dicyandiamid    und 29 Teilen     3-Chlor-4-jod-          anilin-chlorhydrat    in 85 Teilen     ss'-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     Ni-          3-Chlor-4-jodphellyl-N'-äthylbiguanid    in Form  seines     Monohydrochlorids,    welches bei 226 bis  227  C schmilzt.



  Process for the preparation of a biguanide derivative. The present invention relates to a process for the preparation of Nl-3-chloro-4-iodophenyl-N1-ethylbiguanide, 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 nice compound, namely Nl-3-chloro-4-iodophenyl-NI-ethylbiguanide, is obtained by reacting N'-ethyldicyandiamide with 3-chloro-4-iodaniline. implements.



  The reaction is conveniently carried out by heating a salt of the amine with the sub-substituted dicyandiamide in the presence of a solvent, such as. B. Nasser or Ätlioxyäthanol.



  The Nl-3-Clilor-4-iodoplenyl-N'-ethylbiguanide is a strong base which, with organic and inorganic acids, gives permanent salts which in some cases are easily soluble 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 salts with acetic acid, lactic acid, methanesulfonic acid, methylenedisalicylic acid, methylene-bis-β-oxy-liaphthoic acid and hydrochloric acid can be conveniently prepared.



  The following example serves to explain the invention.



  <I> Example: </I> A mixture of 11.2 parts of N3-ethyl dicyandiamide and 29 parts of 3-chloro-4-iodo-aniline chlorohydrate in 85 parts of ss'-ethoxyethanol is reused for 3 hours river heated to the boil. 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-3-chloro-4-iodophellyl-N'-ethyl biguanide is obtained in the form of its monohydrochloride, which melts at 226 to 227.degree.

 

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung von Nl-3-Chlor- 4-jodphenyl-N#,-äthylbigiianid, dadurch ge kennzeichnet, dass man N "-Äthyldicyandiamid mit 3-Chlor-4-jodanilin umsetzt. Das Nl-3-Chlor-4-jodphenyl-N1-äthylbigua- nid ist eine starke Base, deren Monohydro- chlorid bei 226 bis 227 C schmilzt. Die neue Base besitzt kräftige Antimalariaeigenschaften. PATENT CLAIM: Process for the preparation of Nl-3-chloro-4-iodophenyl-N #, - äthylbigiianid, characterized in that N "-ethyldicyandiamide is reacted with 3-chloro-4-iodaniline. The Nl-3-chloro-4 -iodophenyl-N1-ethylbiguanide is a strong base whose monohydrochloride melts at 226 to 227 C. The new base has powerful anti-malarial properties.
CH259709D 1945-10-08 1946-10-08 Process for the preparation of a biguanide derivative. CH259709A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB259709X 1945-10-08
GB170946X 1946-09-17
CH254800T 1946-10-08

Publications (1)

Publication Number Publication Date
CH259709A true CH259709A (en) 1949-01-31

Family

ID=27178065

Family Applications (1)

Application Number Title Priority Date Filing Date
CH259709D CH259709A (en) 1945-10-08 1946-10-08 Process for the preparation of a biguanide derivative.

Country Status (1)

Country Link
CH (1) CH259709A (en)

Similar Documents

Publication Publication Date Title
CH259709A (en) Process for the preparation of a biguanide derivative.
CH259713A (en) Process for the preparation of a biguanide derivative.
CH259679A (en) Process for the preparation of a biguanide derivative.
CH254800A (en) Process for the preparation of a biguanide derivative.
CH259707A (en) Process for the preparation of a biguanide derivative.
CH259661A (en) Process for the preparation of a biguanide derivative.
CH259699A (en) Process for the preparation of a biguanide derivative.
CH259698A (en) Process for the preparation of a biguanide derivative.
CH259666A (en) Process for the preparation of a biguanide derivative.
CH259708A (en) Process for the preparation of a biguanide derivative.
CH259704A (en) Process for the preparation of a biguanide derivative.
CH259703A (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.
CH259694A (en) Process for the preparation of a biguanide derivative.
CH259683A (en) Process for the preparation of a biguanide derivative.
CH259674A (en) Process for the preparation of a biguanide derivative.
CH259688A (en) Process for the preparation of a biguanide derivative.
CH259672A (en) Process for the preparation of a biguanide derivative.
CH259670A (en) Process for the preparation of a biguanide derivative.
CH259662A (en) Process for the preparation of a biguanide derivative.
CH259663A (en) Process for the preparation of a biguanide derivative.
CH259668A (en) Process for the preparation of a biguanide derivative.
CH259660A (en) Process for the preparation of a biguanide derivative.
CH259689A (en) Process for the preparation of a biguanide derivative.