CH259670A - Process for the preparation of a biguanide derivative. - Google Patents

Process for the preparation of a biguanide derivative.

Info

Publication number
CH259670A
CH259670A CH259670DA CH259670A CH 259670 A CH259670 A CH 259670A CH 259670D A CH259670D A CH 259670DA CH 259670 A CH259670 A CH 259670A
Authority
CH
Switzerland
Prior art keywords
methyl
preparation
dichlorophenyl
biguanide derivative
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 CH259670A publication Critical patent/CH259670A/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

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  • 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'-3,4-Di-          chlorphenyl@N'-methyl-N'-isopropylbigua.nid,     welches ein wertvolles chemotherapeutisches  Mittel ist. oder als Zwischenprodukt für die  Herstellung von chemotherapeutischen Mit  teln verwendet werden kann. Es ist insbeson  dere ein wertvolles     Antimalariamittel.     



  Erfindungsgemäss wird die besagte neue       Verbindung,    nämlich     N'-3,4-Dichlorphenyl-          N'-methy        l-N'-isopropylbiguanid,    dadurch er  halten, dass man     N3-IVlethyl-N'-isopropyldi-          eyandiaxnid    mit     3,4-Diehloranilin        umsetzt.     



  Die Umsetzung erfolgt zweckmässig durch  Erhitzen eines Salzes des Amins mit dem  substituierten     Dieyandiamid    in Gegenwart  eines     Lösungsmittels,    wie z. B. Wasser oder       ss-Athoxyäthanol.     



  Das     N'-3,4,Dichlorphenyl-N:"-methyl-I@T'-          isoprol>ylbigruanid    stellt eine starke Base dar,        -elche    mit organischen und     anorga.nisehen     Säuren     be#tändige    Salze ergibt, die in man  chen Fällen in Wasser leicht löslich sind. Die  Salze lassen. sich dadurch herstellen, dass die       Base    in     -%vässrigen    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 m einem Alkohol, in welchem die Salze  spärlich löslich sind, hergestellt werden.

   Auf  diese Weise kann man beispielsweise die  Salze mit Essigsäure, Milchsäure, 14lethansul-         fonsäure,        3lethylendisalicylsäure,        14lethylen-          bis-,f-oxynaphthoesäure    und Salzsäure be  quem herstellen.  



  Das folgende Beispiel diene zur Erläute  rung der Erfindung.         ReispieZ:       Ein Gemisch von 15,4 Teilen     N3-Methyl-          N3-isopropyldicyandiamid    und 19,85 Teilen       3,4-Dichloranilin-chlorhydrat    in 100 Teilen       ss--Athoxyäthanol    wird während 3 Stunden  unter     Rückfluss    zur. Sieden erhitzt.

   Hierauf  lässt man das Gemisch abkühlen, worauf ab  filtriert     wird.    Der feste Rückstand wird mit  kaltem     Äthylacetat    gewaschen und aus Was  ser     umkristallisiert.    Auf diese Weise erhält  man     N'-3,4-Dichlorphenyl-N'-methyl-N'-iso-          propy        lbiguanid    in Form seines     Monohydro-          chloiids,    welches hei 251 bis     25211    C schmilzt.



  Process for the preparation of a biguanide derivative. The present invention relates to a process for the preparation of N'-3,4-dichlorophenyl@N'-methyl-N'-isopropylbigua.nid, which is a valuable chemotherapeutic agent. or can be used as an intermediate for the preparation of chemotherapeutic agents. It is especially a valuable antimalarial agent.



  According to the invention, said new compound, namely N'-3,4-dichlorophenyl-N'-methyl-N'-isopropylbiguanide, is obtained by adding N3-IVlethyl-N'-isopropyldi-eyandiaxnide with 3,4-diehloraniline implements.



  The reaction is conveniently carried out by heating a salt of the amine with the substituted dieyandiamide in the presence of a solvent, such as. B. water or ss-ethoxyethanol.



  The N'-3,4, dichlorophenyl-N: "- methyl-I @ T'-isoprol> ylbigruanid is a strong base, which results in salts with organic and inorganic acids, which in some cases The salts can be prepared by dissolving the base in -% aqueous solutions of the acid and then evaporating the water, but they can be more conveniently prepared in dry form by mixing the components in an organic solvent, such as e.g. B. acetone, or m an alcohol in which the salts are sparingly soluble.

   In this way, for example, the salts with acetic acid, lactic acid, 14lethanesulphonic acid, 3lethylene disalicylic acid, 14lethylene bis-, f-oxynaphthoic acid and hydrochloric acid can be easily prepared.



  The following example serves to explain the invention. ReispieZ: A mixture of 15.4 parts of N3-methyl-N3-isopropyldicyandiamide and 19.85 parts of 3,4-dichloroaniline chlorohydrate in 100 parts of ss-ethoxyethanol is refluxed for 3 hours. Boiling heated.

   The mixture is then allowed to cool, whereupon it is filtered off. The solid residue is washed with cold ethyl acetate and recrystallized from What water. In this way, N'-3,4-dichlorophenyl-N'-methyl-N'-isopropyl biguanide is obtained in the form of its monohydrochloride, which melts at 251 to 25211 ° C.

 

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung von N'-3,4-Di- chlorphenyl-@T''-methyl-N'-i-opropylbigua-nid, dadurch gekennzeichnet, da.ss man N3-Methyl- N--isopropyldieyandia.mid mit 3,4-Dichlor- anilin umsetzt. Das N'-3,4-Dichlorphenyl-N'-methyl-N'- isopropylbigua.nid ist eine starke Base, deren Monohydrochlorid bei 251 bis 252 schmilzt. PATENT CLAIM: Process for the production of N'-3,4-dichlorophenyl- @ T "- methyl-N'-i-opropylbigua-nid, characterized in that one N3-methyl- N - isopropyldieyandia.mid reacted with 3,4-dichloro aniline. The N'-3,4-dichlorophenyl-N'-methyl-N'-isopropylbigua.nid is a strong base whose monohydrochloride melts at 251-252. Die neue Base besitzt kräftige Antima.laria- eigenscha.ften:. The new base has powerful antima.laria properties:
CH259670D 1945-10-08 1946-10-08 Process for the preparation of a biguanide derivative. CH259670A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB259670X 1945-10-08
GB170946X 1946-09-17
CH254800T 1946-10-08

Publications (1)

Publication Number Publication Date
CH259670A true CH259670A (en) 1949-01-31

Family

ID=27178026

Family Applications (1)

Application Number Title Priority Date Filing Date
CH259670D CH259670A (en) 1945-10-08 1946-10-08 Process for the preparation of a biguanide derivative.

Country Status (1)

Country Link
CH (1) CH259670A (en)

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