CH259657A - Process for the preparation of a biguanide derivative. - Google Patents

Process for the preparation of a biguanide derivative.

Info

Publication number
CH259657A
CH259657A CH259657DA CH259657A CH 259657 A CH259657 A CH 259657A CH 259657D A CH259657D A CH 259657DA CH 259657 A CH259657 A CH 259657A
Authority
CH
Switzerland
Prior art keywords
preparation
methyl
biguanide derivative
acid
salts
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 CH259657A publication Critical patent/CH259657A/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'-3,4,5-Tri-          chlorpfienyl-N'-methyl-N'-isopropylbiguanid,          welches    ein wertvolles     ehemotherapeutisehes     Mittel ist oder als Zwischenprodukt für die  Herstellung von chemotherapeutischen Mit  teln verwendet werden kann. Es ist insbeson  dere ein wertvolles     Antimalariamittel.     



       Brfindnrigsgemäss    wird die besagte neue  Verbindung, nämlich     N'-3,4,5-Trichlorphen.yl-          N'-metliyl-N'-isopropylliiguanid,    dadurch ge  kennzeichnet, dass     man        N'-Metliyl-N'-isopro-          pyldicyandiamid    mit     3,4,5-Trichloranilin    um  setzt.  



  Die Umsetzung erfolgt     zweckmässig    durch  Erhitzen eines Salzes des Amins     finit    dem  substituierten     Dicyandiamid    in Gegenwart  eines Lösungsmittels, wie z. B. Wasser oder       b'-Äthoxyätha,nol.     



  Das     N'-3,4,5-Trichlorplienyl-N'-methyl-N'-          isopropylbiguanid    stellt eine starke Base dar,  welche mit organischen und anorganischen  Säuren beständige Salze ergibt, die in man  chen Fällen 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 organischen Lösungsmittel, wie z. B.  Aceton, oder in einem Alkohol, in welchem  die Salze spärlich löslich sind, hergestellt  werden.

   Auf diese Weise kann man beispiels  weise die Salze mit Essigsäure,     Milehsäure,            Methansulfonsäure,        Methylendisalicylsäure,          llethylen-bis-ss-oxynaphthoesäure    und Salz  säure bequem herstellen.  



  Das folgende Beispiel diene zur     Erläi..te-          rung    der Erfindung.  



  <I>Beispiel:</I>  Bin Gemisch von 13,0 Teilen     N'-14lethyl-          N:\-isopropyldieyandiamid    und 25,6 Teilen       3,4,5-Tricliloranilin-chlorhy        drat    in 80 Teilen       [)'-Äthoxyäthanol    wird während 3 Stunden  unter     Rückfluss    zum Sieden erhitzt. Hierauf  lässt man das Gemisch abkühlen, worauf     ab-          filt.riert    wird. Der feste Rückstand wird mit  kaltem     Äthylacetat    gewaschen und aus  Wasser umkristallisiert.

   Auf diese Weise er  liält man     N'-3,4,5-Triehlorphenyl-N'-methyl-          NT'-isopropylbiguanid    in Form seines     Mono-          hy        drochlorids,    welches bei     234-235     C  schmilzt.



  Process for the preparation of a biguanide derivative. The present invention relates to a process for the preparation of N'-3,4,5-trichlorophenyl-N'-methyl-N'-isopropylbiguanide, which is a valuable former therapeutic agent or can be used as an intermediate for the preparation of chemotherapeutic agents can. It is especially a valuable antimalarial agent.



       According to the invention, the said new compound, namely N'-3,4,5-Trichlorphen.yl-N'-methyl-N'-isopropylliiguanid, characterized in that N'-methyl-N'-isopropyldicyandiamide with 3 , 4,5-trichloroaniline sets.



  The reaction is conveniently carried out by heating a salt of the amine finite the substituted dicyandiamide in the presence of a solvent, such as. B. water or b'-Äthoxyätha, nol.



  The N'-3,4,5-trichloroplienyl-N'-methyl-N'-isopropylbiguanide is a strong base which gives stable salts with organic and inorganic acids, 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, llethylene-bis-β-oxynaphthoic acid and hydrochloric acid can be conveniently prepared.



  The following example serves to explain the invention.



  <I> Example: </I> A mixture of 13.0 parts of N'-14lethyl- N: \ - isopropyldiyandiamide and 25.6 parts of 3,4,5-tricliloraniline chlorohydrate in 80 parts of [) '- ethoxyethanol heated to boiling under reflux for 3 hours. The mixture is then left to cool, whereupon it is filtered off. The solid residue is washed with cold ethyl acetate and recrystallized from water.

   In this way, N'-3,4,5-triehlophenyl-N'-methyl-NT'-isopropylbiguanide is obtained in the form of its monohydrochloride, which melts at 234-235.degree.

 

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung von N'-3,4,5 Triehlorphenyl - Nj - methyl - N' - isopropy lbi- guanid, dadurch gekennzeichnet, dass man N' - Methyl - N' - isopropyldicyandiamid mit 3,4,5-Triehloranilin umsetzt. Das N'-3,4,5-Trichlorphenyl-N'-methyl-N'- isopropylbiguanid ist eine starke Base, deren Monohy drochlorid bei 234-235 C schmilzt. Claim: Process for the preparation of N'-3,4,5 triehlophenyl - Nj - methyl - N '- isopropy lbiguanide, characterized in that N' - methyl - N '- isopropyldicyandiamide with 3,4,5-triehloraniline implements. The N'-3,4,5-trichlorophenyl-N'-methyl-N'-isopropylbiguanid is a strong base whose monohydrochloride melts at 234-235 ° C. Die neue Base besitzt kräftige Antimalaria- eigenschaften. The new base has powerful antimalarial properties.
CH259657D 1945-10-08 1946-10-08 Process for the preparation of a biguanide derivative. CH259657A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB259657X 1945-10-08
GB170946X 1946-09-17
CH254800T 1946-10-08

Publications (1)

Publication Number Publication Date
CH259657A true CH259657A (en) 1949-01-31

Family

ID=27178013

Family Applications (1)

Application Number Title Priority Date Filing Date
CH259657D CH259657A (en) 1945-10-08 1946-10-08 Process for the preparation of a biguanide derivative.

Country Status (1)

Country Link
CH (1) CH259657A (en)

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