CH259673A - Process for the preparation of a biguanide derivative. - Google Patents

Process for the preparation of a biguanide derivative.

Info

Publication number
CH259673A
CH259673A CH259673DA CH259673A CH 259673 A CH259673 A CH 259673A CH 259673D A CH259673D A CH 259673DA CH 259673 A CH259673 A CH 259673A
Authority
CH
Switzerland
Prior art keywords
preparation
propylbiguanide
bromophenyl
biguanide derivative
water
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 CH259673A publication Critical patent/CH259673A/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'-p-Brom-          pheriyl-N'-n-propylbiguanid,    welches ein       wertvolles    chemotherapeutisches Mittel ist  oder als Zwischenprodukt für die Herstel  lung von chemotherapeutischen     Mitteln    ver  wendet werden kann. Es ist     insbesondere    ein  wertvolles     Antimalariamittel.     



  Erfindungsgemäss wird die     besagte    neue  Verbindung, nämlich     N'-p-Bromphenyl-Ns-          ri-propylbiguanid,    dadurch erhalten, dass man       N"-n-Propyldicyandiamid    mit     p-Bromanilin          umsetzt.     



  Die Umsetzung erfolgt     zweckmässig    durch  Erhitzen     eines    Salzes des Amins mit dem       substiluierten        Dicyandiamid    in     Gegenwart     eines Lösungsmittels, wie z. B. Wasser oder       f-Äthoxyäthanol.     



  Dass     N'-p-Bromphenyl-N'-n-propylbigua-          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 las  sen 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     'läslich    sind, hergestellt werden.

   Auf  diese Weise kann man beispielsweise die    Salze mit Essigsäure, Milchsäure,     Methan-          sulfonsäure,        Methylendisalicylsäure,        Methy-          len-bis-ss-oxynaphthoesäure    und Salzsäure be  quem     herstellen.     



  Das folgende Beispiel diene zur Erläu  terung der Erfindung.         Beispiel:     Ein Gemisch von 12,6 Teilen     N3-n-Pro-          pyldicyandiamid    und 23 Teilen     p-Bromanilin-          chlorhydrat    in 350 Teilen Wasser wird wäh  rend 3     Stunden    unter     Rückfluss    zum     Siedeir     erhitzt. Hierauf lässt man     das    Gemisch ab  kühlen, worauf     abfiltriert    wird. Der feste       Rückstand    wird mit     kaltem    Wasser gewa  schen und aus     Wasser    umkristallisiert.

   Auf  diese Weise erhält man     N'-p-Bromphenyl-          N'-n-propylbiguanid    in Form seines     Mono-          hydrochlorids,    welches bei 221     bis    222  C  schmilzt.



  Process for the preparation of a biguanide derivative. The present invention relates to a process for the preparation of N'-p-bromopheriyl-N'-n-propylbiguanide, 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 N'-p-bromophenyl-Ns- ri-propylbiguanide, is obtained by reacting N "-n-propyldicyandiamide with p-bromoaniline.



  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 f-ethoxyethanol.



  The N'-p-bromophenyl-N'-n-propylbiguanide 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 in that the base in aqueous. Solutions of the acid dissolved 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 spär 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 easily prepared.



  The following example serves to explain the invention. Example: A mixture of 12.6 parts of N3-n-propyldicyandiamide and 23 parts of p-bromoaniline chlorohydrate in 350 parts of water is heated to the boil under reflux for 3 hours. The mixture is then allowed to cool, whereupon it is filtered off. The solid residue is washed with cold water and recrystallized from water.

   In this way, N'-p-bromophenyl-N'-n-propyl biguanide is obtained in the form of its monohydrochloride, which melts at 221 to 222.degree.

 

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung von N'-p- Bromphenyl-N'-n-propylbiguanid, dadurch gekennzeichnet, da.ss man N"-n-,Propyldicyan- di@a.mid mit p-Bromanilin umsetzt. Das N'-p-Bromphenyl-N'-n-propylbigua- nid ist eine starke Base, deren Monohydro- chlorid bei 221 bis 222 C schmilzt. Die neue Base besitzt kräftige Antimalariaeigenschaf- ten. PATENT CLAIM: Process for the preparation of N'-p-bromophenyl-N'-n-propylbiguanide, characterized in that N "-n-, propyldicyan- di@a.mid are reacted with p-bromoaniline. p-Bromophenyl-N'-n-propylbiguanide is a strong base whose monohydrochloride melts at 221 to 222 C. The new base has powerful antimalarial properties.
CH259673D 1945-10-08 1946-10-08 Process for the preparation of a biguanide derivative. CH259673A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB259673X 1945-10-08
GB170946X 1946-09-17
CH254800T 1946-10-08

Publications (1)

Publication Number Publication Date
CH259673A true CH259673A (en) 1949-01-31

Family

ID=27178029

Family Applications (1)

Application Number Title Priority Date Filing Date
CH259673D CH259673A (en) 1945-10-08 1946-10-08 Process for the preparation of a biguanide derivative.

Country Status (1)

Country Link
CH (1) CH259673A (en)

Similar Documents

Publication Publication Date Title
CH259673A (en) Process for the preparation of a biguanide derivative.
CH259698A (en) Process for the preparation of a biguanide derivative.
CH259704A (en) Process for the preparation of a biguanide derivative.
CH259678A (en) Process for the preparation of a biguanide derivative.
CH259707A (en) Process for the preparation of a biguanide derivative.
CH254800A (en) Process for the preparation of a biguanide derivative.
CH259713A (en) Process for the preparation of a biguanide derivative.
CH259708A (en) Process for the preparation of a biguanide derivative.
CH259677A (en) Process for the preparation of a biguanide derivative.
CH259661A (en) Process for the preparation of a biguanide derivative.
CH259679A (en) Process for the preparation of a biguanide derivative.
CH259674A (en) Process for the preparation of a biguanide derivative.
CH259683A (en) Process for the preparation of a biguanide derivative.
CH259668A (en) Process for the preparation of a biguanide derivative.
CH259666A (en) Process for the preparation of a biguanide derivative.
CH259675A (en) Process for the preparation of a biguanide derivative.
CH259684A (en) Process for the preparation of a biguanide derivative.
CH259660A (en) Process for the preparation of a biguanide derivative.
CH259685A (en) Process for the preparation of a biguanide derivative.
CH259699A (en) Process for the preparation of a biguanide derivative.
CH259659A (en) Process for the preparation of a biguanide derivative.
CH259681A (en) Process for the preparation of a biguanide derivative.
CH259672A (en) Process for the preparation of a biguanide derivative.
CH259669A (en) Process for the preparation of a biguanide derivative.
CH259693A (en) Process for the preparation of a biguanide derivative.