CH259710A - Process for the preparation of a biguanide derivative. - Google Patents
Process for the preparation of a biguanide derivative.Info
- Publication number
- CH259710A CH259710A CH259710DA CH259710A CH 259710 A CH259710 A CH 259710A CH 259710D A CH259710D A CH 259710DA CH 259710 A CH259710 A CH 259710A
- Authority
- CH
- Switzerland
- Prior art keywords
- preparation
- chloro
- methyl
- iodophenyl
- biguanide derivative
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C279/00—Derivatives of guanidine, i.e. compounds containing the group, the singly-bound nitrogen atoms not being part of nitro or nitroso groups
- C07C279/20—Derivatives 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
- C07C279/24—Y being a hetero atom
- C07C279/26—X 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)
- Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
Description
Verfahren zur Herstellung eines Biguanidderivates. Die vorliegende Erfindung betrifft ein Verfahren zur Herstellung von N1-3-Chlor-4- ,jodphenyl - N 5 - nietliyl - N:-, - isopropylbiguanid, -%aelches ein wertvolles chemotherapeutisehes 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, e-, nämlich N 1-3-Chlor-4-jodpheny 1- NI-methyl-N",-isopropyIbig-ianid, dadurch er halten, dass man N3-hlethyl-N3-isopropyl- dicyaudiamid mit 3-Chlor-4-jodanilin um setzt.
Die Umsetzung erfolgt zweckmässig durch Erhitzen eines Salzes des Amins mit dem sub stituierten Dicyandiamid in fTegen-%vart eines Lösungsmittels, -vie z. B. Wasser oder ss- @1thor-väthanol.
Das N1-3-Clilor-4-jodphenyl-N -methyl-N5- 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 sieh dadurch herstellen, dass die Base in wässrigen Lös-uigen der Säure ge löst 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 beispielsweise die Salze mit Essigsäure, :Milchsäure, Methansulfon- säure, Methylendisalicylsäu re, 111ethylen-bis-p- oxynapht.hoesäure und Salzsäure bequem her stellen.
Das folgende Beispiel diene zur Erläute rung der Erfindung. <I>Beispiel:</I> Ein Gemisch von 14 Teilen N3-lslethyl-N3- isoprop@-ldieyandiamid und 29 Teilen 3-Chlor- 4-jodanilin-ehlorhydrat in 120 Teilen Athoxyäthanol wird während 3 Stunden -unter Rüekfluss zum Sieden erhitzt. Hierauf lässt man das Gemisch abkühlen, worauf abfiltriert wird. Der feste Rückstand wird mit kaltem Athylacetat gewaschen und aus Wasser um kristallisiert.
Auf diese Weise erhält. man N1 3 - Chlor-4-j odphenyl -N' -methyl-N '-isopropyl- biguanid in Form seines Monohy drochlorids, welches bei 231 C schmilzt.
Process for the preparation of a biguanide derivative. The present invention relates to a process for the preparation of N1-3-chloro-4-, iodophenyl - N 5 - nietliyl - N: -, - isopropylbiguanide, -% which is a valuable chemotherapeutic agent or as an intermediate for the preparation of chemotherapeutic agents can be used. It is especially a valuable antimalarial agent.
According to the invention, the said new compound, e-, namely N 1-3-chloro-4-iodopheny 1- NI-methyl-N ", - isopropyIbig-ianid, is obtained by using N3-methyl-N3-isopropyl-dicyaudiamide with 3-chloro-4-iodaniline.
The reaction is conveniently carried out by heating a salt of the amine with the sub-substituted dicyandiamide in fTegen-% vart of a solvent, -vie z. B. water or ss- @ 1thor-väthanol.
The N1-3-Clilor-4-iodophenyl-N -methyl-N5-isopropylbiguanid is a strong base, which with organic. and inorganic acids results in stable salts, which in some cases easily in water. are soluble. 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 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, 111ethylene-bis-p-oxynaphthoic acid and hydrochloric acid can be conveniently prepared.
The following example serves to explain the invention. <I> Example: </I> A mixture of 14 parts of N3-islethyl-N3-isoprop®-ldieyandiamide and 29 parts of 3-chloro-4-iodaniline chlorohydrate in 120 parts of ethoxyethanol is heated to boiling for 3 hours under reflux . 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.
That way it gets. one N1 3 - chloro-4-iodophenyl -N '-methyl-N' -isopropyl biguanid in the form of its Monohy drochlorids, which melts at 231C.
Claims (1)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB259710X | 1945-10-08 | ||
GB170946X | 1946-09-17 | ||
CH254800T | 1946-10-08 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH259710A true CH259710A (en) | 1949-01-31 |
Family
ID=27178066
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH259710D CH259710A (en) | 1945-10-08 | 1946-10-08 | Process for the preparation of a biguanide derivative. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH259710A (en) |
-
1946
- 1946-10-08 CH CH259710D patent/CH259710A/en unknown
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