CH311637A - Process for the production of a new basic substituted fatty acid (2-halogen-6-methyl-anilide). - Google Patents
Process for the production of a new basic substituted fatty acid (2-halogen-6-methyl-anilide).Info
- Publication number
- CH311637A CH311637A CH311637DA CH311637A CH 311637 A CH311637 A CH 311637A CH 311637D A CH311637D A CH 311637DA CH 311637 A CH311637 A CH 311637A
- Authority
- CH
- Switzerland
- Prior art keywords
- anilide
- methyl
- production
- halogen
- fatty acid
- Prior art date
Links
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- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
Description
Verfahren zur Herstellung eines neuen basisch substituierten Fettsäure (2-halogen-6.methyl-anilias). Gegenstand des vorliegenden Patentes bil det ein Verfahren zur Herstellung eines neuen basisch substituierten Fettsä.ure-(2-ha.logen-6- methyl-anilids), welches dadurch gekennzeich net ist, dass man eine Verbindung der Formel
EMI0001.0003
in welcher X einen reaktionsfähigen, während der Reaktion sich abspaltenden Rest bedeutet, mit N-n-Butyl-piperazin umsetzt.
Der Rest X kann in einem Halogenatom oder einem sonstigen für den Austausch gegen den basischen Rest geeigneten reaktionsfähigen Substituenten, wie z. B. einer Alky1sulfonyl- ox7- oder Arylsulfonyloxygruppe, bestehen. Der Austausch der Gruppe X gegen den N- n-Buty 1-piperazinrest erfolgt z. B. durch ein faches Erwärmen mit N-n-Butyl-piperazin ge gebenenfalls in Gegenwart eines basisch rea gierenden Kondensationsmittels oder von N- n-Butyl-piperazin im Überschuss.
Das N-n- Butyl-piperazinyl- (N') -essigsäure-(2-chlor-6- methyl-anilid) ist ein farbloses, säurelösliches Öl. Das Hydrochlorid der Base schmilzt bei 204-206 unter Zersetzung.
Das neue Anilid soll als Lokalanästhetikiun und als Zwischenprodukt zur Herstellung wei terer Derivate Verwendung finden. <I>Beispiel:</I> 22 Gewichtsteile Chloracet-(2-chlor -6-me- thyl-anilid) (gewonnen durch Umsetzen von 2-Chlor-6-methy 1-anilin mit Chlor acetylchlorid in Gegenwart von Natriumacetat, Schmp. 140 bis 141 )
werden in 100 Gewichtsteilen Ätha- nol suspendiert und mit 15 Gewichtsteilen N- n-Btityl-piperazin versetzt. Die Temperatur steigt dabei leicht. an, und ein grosser Teil des Reaktionsgemisches geht. in Lösung. Nun wird während 4 Stunden bei Zimmertemperatur ge rührt und dann einige Stunden bei 65-75 . Man versetzt mit. Wasser, behandelt die Reak tionslösung mit. Wasserdampf und sättigt. dann mit Kochsalz. Das abgeschiedene Öl wird in Äther aufgenommen.
Nach dem Trocknen der ätherischen Lösung und Verjagen des Lösungs mittels verbleibt ein Öl, das durch Überfüh ren in das Hydrochlorid gereinigt wird. Man erhält 35 Gewichtsteile reines N-n-Butyl- piperazinyl - (INT') - essigsäure- (2-chlor-6-methyl- anilid). Die Umsetzung mit N-n-Butylpiper- a.zin kann auch in Benzol stattfinden.
Process for the production of a new basic substituted fatty acid (2-halogen-6.methyl-anilias). The subject of the present patent bil det a process for the production of a new basic substituted Fettsä.ure- (2-ha.logen-6-methyl-anilids), which is characterized in that a compound of the formula
EMI0001.0003
in which X is a reactive radical which is split off during the reaction, is reacted with N-n-butyl-piperazine.
The radical X can be in a halogen atom or any other reactive substituent suitable for replacement with the basic radical, such as. B. an Alky1sulfonyl- ox7- or Arylsulfonyloxygruppe exist. The exchange of group X for the N-n-buty 1-piperazine radical takes place, for. B. by a fold of heating with N-n-butyl-piperazine ge optionally in the presence of a basic rea acting condensing agent or N-n-butyl-piperazine in excess.
N-n-butyl-piperazinyl- (N ') -acetic acid- (2-chloro-6-methyl-anilide) is a colorless, acid-soluble oil. The hydrochloride of the base melts at 204-206 with decomposition.
The new anilide is to be used as a local anesthetic and as an intermediate product for the production of further derivatives. <I> Example: </I> 22 parts by weight of chloroacet- (2-chloro-6-methyl-anilide) (obtained by reacting 2-chloro-6-methy 1-aniline with chloroacetyl chloride in the presence of sodium acetate, mp . 140 to 141)
are suspended in 100 parts by weight of ethanol and mixed with 15 parts by weight of N-n-Btityl-piperazine. The temperature rises slightly. on, and a large part of the reaction mixture goes. in solution. The mixture is then stirred for 4 hours at room temperature and then for a few hours at 65-75. One adds. Water, treats the reaction solution with. Water vapor and saturates. then with table salt. The separated oil is taken up in ether.
After the essential solution has dried and the solvent has been driven off, an oil remains which is purified by transferring it into the hydrochloride. 35 parts by weight of pure N-n-butylpiperazinyl (INT ') acetic acid (2-chloro-6-methyl anilide) are obtained. The reaction with N-n-butylpiper- azine can also take place in benzene.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH311637T | 1952-02-25 | ||
CH307799T | 1952-11-25 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH311637A true CH311637A (en) | 1955-11-30 |
Family
ID=25735370
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH311637D CH311637A (en) | 1952-02-25 | 1952-02-25 | Process for the production of a new basic substituted fatty acid (2-halogen-6-methyl-anilide). |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH311637A (en) |
-
1952
- 1952-02-25 CH CH311637D patent/CH311637A/en unknown
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