CH311546A - 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).

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Publication number
CH311546A
CH311546A CH311546DA CH311546A CH 311546 A CH311546 A CH 311546A CH 311546D A CH311546D A CH 311546DA CH 311546 A CH311546 A CH 311546A
Authority
CH
Switzerland
Prior art keywords
methyl
anilide
halogen
production
piperidino
Prior art date
Application number
Other languages
German (de)
Inventor
Aktiengesellschaft Cilag
Original Assignee
Cilag Ag
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 Cilag Ag filed Critical Cilag Ag
Publication of CH311546A publication Critical patent/CH311546A/en

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  • Hydrogenated Pyridines (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)

Description

  

      Verfahren    zur Herstellung eines neuen basisch substituierten     Fettsäure-          (2-halogen-6-methyl-anilids).       Gegenstand des vorliegenden Patentes ist  ein Verfahren     mir    Herstellung eines neuen  basisch substituierten     Fettsäure-(2-halogen-6-          metliyl-anilids),    welches dadurch     gekennzeich-          riet    ist, dass man auf eine Verbindung der  Formel  
EMI0001.0009     
    eine Verbindung der Formel  
EMI0001.0010     
    in welchen Formeln X und Y reaktionsfähige,  bei der Reaktion sich abspaltende Reste be  deuten, einwirken lässt.  



  Als Verbindungen der Formel I kommen  für einen Umsatz beispielsweise in Frage:       2-Chlor-6-methyl-anilin,    eventuell in Form sei  ner Salze, wie des Hydrochlorids oder des  Sulfates, weiter die     N-Halogen-magnesyl-Ver-          bindungen    (X = Mg.     Hal)        usf.     



  Als Verbindungen der Formel     II    kommen  beispielsweise in Frage:     ss-Piperidino-butter-          säure    selbst und ihre reaktionsfähigen funk  tionellen Derivate wie ihre     Halogenide,    ihre  Ester, ihre     Anhydride,    beispielsweise die rei  nen und auch die gemischten     Anhydride    mit  Phosphorsäure,

   Schwefelsäure und Kohlen  säure     usf.       Man kann beispielsweise     2-Chlor-6-methyl-          anilin    oder auch ein     Salz    desselben in Gegen  wart eines für diese Zwecke geeigneten was  serabspaltenden Mittels wie     Phosphorpent-          oxyd,        Phosphoroxychlorid        usf.    mit     ss-Piperi-          dino-buttersäure    behandeln.  



  Weiter kann man auch     2-Chlor-6-inethyl-          anilin    bzw. ein Salz desselben mit einem     ss-          Piperidino-buttersäurehalogenid    (bzw. einem  Salz eines solchen) oder einem     Anhydrid    zur  Reaktion     bringen.     



  Es ist weiterhin auch möglich,     2-Chlor-6-          methyl-anilin    mit einem     ss-Piperidino-butter-          säureester,    vorzugsweise einem     Arylester,    bei  erhöhter Temperatur zu     acylieren    oder bei  spielsweise ein     Halogen-magnesyl-2-chlor-6-          methyl-anilin    (erhalten durch     Umsetzen    der  Base mit einem     Alkylmagnesiumhalid)    mit  einem     ss-Piperidino-bitttersäurealkylester    um  zusetzen.  



  Das auf diese Weise erhaltene     ss-Piperi-          dino-buttersäure-(2-chlor-6-methyl-anilid)    bil  det ein farbloses, bei 88-90  schmelzendes  Kristallpulver. Das neue     Anilid    soll als Lokal  anästhetikum und als Zwischenprodukt zur       Herstellung    weiterer Derivate     Verwendung     finden.  



  <I>Beispiel:</I>  24 Gewichtsteile     ss-Piperidino-buttersäitre-          clilorid-hydrochlorid    in     Benzol    werden mit  einer Mischung von 14 Gewichtsteilen     2-Chlor-          6-methyl-anilin    und 20 Gewichtsteilen     Tri-          äthylamin    erwärmt. Anschliessend wird das  gebildete     Triäthylaminhydrochlorid    durch      Ausschütteln mit Wasser entfernt     und    die       Benzollösung    nach dem Trocknen verdampft.

    Der Rückstand stellt das     ss-Piperidino-butter-          säure-2-chlor-6-methyl-anilid    dar, das durch  Umkristallisation aus     Petroläther    gereinigt  werden kann.  



  Die Reaktion kann auch ohne     Verdün-          nungs-    und Kondensationsmittel durchgeführt  werden, indem man beispielsweise das     ss-Pi-          peridino-buttersäure-chlorid-hydrochlorid    mit       2-Chlor-6-methyl-anilin    trocken erhitzt, an  schliessend die Reaktionsmasse mit Wasser  verdünnt und in üblicher Weise aufarbeitet.



      Process for the production of a new basic substituted fatty acid (2-halogen-6-methyl-anilide). The subject of the present patent is a process with the production of a new basic substituted fatty acid (2-halo-6-methyl-anilide), which is characterized by the fact that a compound of the formula
EMI0001.0009
    a compound of the formula
EMI0001.0010
    in which formulas X and Y are reactive residues that are split off during the reaction.



  Compounds of the formula I that can be used for conversion include, for example: 2-chloro-6-methyl-aniline, possibly in the form of its salts, such as the hydrochloride or the sulfate, and the N-halo-magnesyl compounds (X = Mg. Hal) etc.



  Examples of possible compounds of the formula II are: ß-piperidino-butyric acid itself and its reactive functional derivatives such as its halides, its esters, its anhydrides, for example the pure and also the mixed anhydrides with phosphoric acid,

   Sulfuric acid and carbonic acid, etc. You can, for example, 2-chloro-6-methyl-aniline or a salt thereof in the presence of a water-splitting agent suitable for this purpose such as phosphorus pentoxide, phosphorus oxychloride, etc. with β-piperidino-butyric acid to treat.



  Furthermore, 2-chloro-6-ynethylaniline or a salt thereof can also be reacted with an β-piperidino-butyric acid halide (or a salt of such) or an anhydride.



  It is furthermore also possible to acylate 2-chloro-6-methyl-aniline with an β-piperidino-butyric acid ester, preferably an aryl ester, at elevated temperature or, for example, a halo-magnesyl-2-chloro-6-methyl- aniline (obtained by reacting the base with an alkylmagnesium halide) with an alkyl ss-piperidino-bitter acid ester.



  The β-piperidino-butyric acid (2-chloro-6-methyl-anilide) obtained in this way forms a colorless crystal powder that melts at 88-90. The new anilide will be used as a local anesthetic and as an intermediate product for the production of other derivatives.



  <I> Example: </I> 24 parts by weight of β-piperidino-buttersäitre- clilorid hydrochloride in benzene are heated with a mixture of 14 parts by weight of 2-chloro-6-methyl-aniline and 20 parts by weight of triethylamine. The triethylamine hydrochloride formed is then removed by shaking with water and the benzene solution is evaporated after drying.

    The residue is the ss-piperidino-butyric acid-2-chloro-6-methyl-anilide, which can be purified by recrystallization from petroleum ether.



  The reaction can also be carried out without diluents and condensation agents, for example by heating the β-piperidino-butyric acid chloride hydrochloride dry with 2-chloro-6-methyl-aniline, then diluting the reaction mass with water and adding worked up in the usual way.

 

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines neuen basisch substituierten FettsäLire-(2-halogen-6- methyl-anilids), dadurch gekennzeichnet, dass man auf eine Verbindung der Formel EMI0002.0014 eine Verbindung der Formel EMI0002.0015 in welchen Formeln X und V reaktionsfähige, bei der Reaktion sieh abspaltende Reste be deuten, einwirken lässt. Das auf diese Weise erhaltene ss-Piperi- dino-buttersäure-(2-elilor-6-methyl-anilid) ist ein farbloses, bei 88-90 schmelzendes Kri stallpulver. PATENT CLAIM: Process for the preparation of a new basic substituted FettsäLire- (2-halogen-6-methyl-anilide), characterized in that one is based on a compound of the formula EMI0002.0014 a compound of the formula EMI0002.0015 in which formulas X and V are reactive radicals that split off during the reaction. The β-piperidino-butyric acid (2-elilor-6-methyl-anilide) obtained in this way is a colorless crystal powder that melts at 88-90. Das neue Anilid soll als Lokal-; anästlietikum und als Zwisehenprodukt Ver wendung finden. UNTERANSPRUCH: Verfahren nach Patentansprueb, dadurch gekennzeichnet, dass man 2-Chlor-6-methyl-. anilin mit einem ss-Piperidino-b-Littersäiire- halogenid umsetzt. The new anilide is said to be used as a local; anesthetic and as an intermediate product. SUBCLAIM: Process according to patent claim, characterized in that 2-chloro-6-methyl-. aniline with an ß-piperidino-b-litter acid halide.
CH311546D 1952-02-25 1952-02-25 Process for the production of a new basic substituted fatty acid (2-halogen-6-methyl-anilide). CH311546A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH311546T 1952-02-25
CH306201T 1955-03-31

Publications (1)

Publication Number Publication Date
CH311546A true CH311546A (en) 1955-11-30

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Family Applications (1)

Application Number Title Priority Date Filing Date
CH311546D CH311546A (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) CH311546A (en)

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