CH311545A - 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
CH311545A
CH311545A CH311545DA CH311545A CH 311545 A CH311545 A CH 311545A CH 311545D A CH311545D A CH 311545DA CH 311545 A CH311545 A CH 311545A
Authority
CH
Switzerland
Prior art keywords
anilide
methyl
fatty acid
halogen
substituted fatty
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 CH311545A publication Critical patent/CH311545A/en

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Description

  

      Verfahren        zur        Herstellung    eines neuen basisch     substituierten    Fettsäure:       (2-halogen-6-methyl-anilids).       Gegenstand des vorliegenden Patentes ist  ein     Verfahren    zur Herstellung eines neuen  basisch substituierten     Fettsäure-(2-halogen-6-          metliyl-anilids),    welches dadurch gekennzeich  net ist,     dass    man auf eine Verbindung der    Formel  
EMI0001.0010     
    eine Verbindung der Formel.  
EMI0001.0011     
    in welchen Formeln X und Y reaktionsfähige,  bei der Reaktion sieh abspaltende Reste be  deuten, einwirken lässt.  



  Als Verbindungen der Formel I kommen  für einen Umsatz beispielsweise in Frage       2-Chlor-6-methy        l-anilin,    eventuell in Form sei  ner Salze, wie des     Hydrochlorids    oder des  Sulfates, weiter die     N-Halogen-magnesyl-Ver-          bindungen    (X =<B>Mg.</B>     Ha1)        usf.     



  Als Verbindungen der Formel     II    kommen  beispielsweise in Frage:     ,B-Pyrrolidino-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,        Phosphorogychlorid        usf.    mit     ss-Pyrro-          lidino-buttersäure        behandeln.     



  Weiter kann man auch     2-Chlor-6-methyl-          anilin        bzw.    ein     Salz    desselben mit einem       ,B    -     Pyrrolidino    -     buttersäurehalogenid    (bzw.  einem     Salz    eines solchen) oder einem     Anhy-          drid    zur Reaktion bringen.  



  Es ist weiterhin auch möglich,     2-Chlor-6-          meth3T1-anilin    mit einem     f-Pyrrolidino-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-Pyrrolidino-buttersäurealkylester    um  zusetzen.  



  Das auf diese Weise erhaltene     ss-Pyrro-          lidino    -     buttersäure-    (2- chlor- 6 -     methyl-anilid    )  bildet ein farbloses, bei 87-88  schmelzendes  Kristallpulver; dessen Hydrochlorid schmilzt  bei 185-186 . Das neue     Anilid    soll als Lokal  anästhetikum und als Zwischenprodukt zur  Herstellung weiterer Derivate Verwendung  finden.  



  <I>Beispiel:</I>  22 Gewichtsteile     ,B-Pyrrolidino-buttersäure-          chlorid-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-Pyrrolidino-butter-          säure-(2-ehlor-6-methyl-anilid)    dar, das durch  Umkristallisation aus     Petrolätlicr        gereinigt     werden kann.  



  Die Reaktion kann auch ohne     Verdün-          nungs-    und Kondensationsmittel     durehge-          führt    werden, indem man     beispielsweise    das       ss-Pyrrolidino-buttersäurechlorid-liydroclilorid     mit     2-Chlor-6-methyl-anilin    trocken erhitzt,  anschliessend 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 for the preparation of a new basic substituted fatty acid (2-halo-6-methyl-anilide), which is characterized in that a compound of the formula
EMI0001.0010
    a compound of the formula.
EMI0001.0011
    in which formulas X and Y are reactive radicals that split off during the reaction.



  Compounds of the formula I that can be used for conversion are, 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 = <B> Mg. </B> Ha1) etc.



  As compounds of the formula II, for example: B-pyrrolidino-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,

         For example, 2-chloro-6-methylaniline or a salt thereof can be treated with β-pyrrolidino-butyric acid in the presence of a water-splitting agent suitable for this purpose, such as phosphorus pentoxide, phosphorogychloride, etc.



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



  It is furthermore also possible to acylate 2-chloro-6-meth3T1-aniline with an f-pyrrolidino-butyric acid ester, preferably an aryl ester, at elevated temperature or, for example, a halogen-magnesyl-2-chloro-6-methyl- aniline (obtained by reacting the base with an alkylmagnesium halide) with an s-pyrrolidino-butyric acid alkyl ester.



  The ss-pyrrolidino-butyric acid (2-chloro-6-methyl-anilide) obtained in this way forms a colorless crystal powder which melts at 87-88; its hydrochloride melts at 185-186. The new anilide is to be used as a local anesthetic and as an intermediate for the production of other derivatives.



  <I> Example: </I> 22 parts by weight of B-pyrrolidino-butyric acid chloride 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-pyrrolidino-butyric acid (2-chloro-6-methyl-anilide), which can be purified by recrystallization from petroleum ether.



  The reaction can also be carried out without a diluent or condensation agent, for example by heating the β-pyrrolidino-butyric acid chloride liydroclilorid with 2-chloro-6-methyl-aniline to dryness, then diluting the reaction mass with water and in the usual way worked up.

 

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines neuen basisch substituierten Fettsäure-(2-lialogen-6- methyl-anilids), dadurch gekennzeichnet, da.ss man auf eine Verbindung der Formel EMI0002.0017 eine Verbindung der Formel EMI0002.0018 in welchen Formeln K und Y reaktionsfällige, bei der Reaktion sich abspaltende Reste be deuten, einwirken lässt. PATENT CLAIM: Process for the preparation of a new basic substituted fatty acid (2-lialogen-6-methyl-anilide), characterized in that one is based on a compound of the formula EMI0002.0017 a compound of the formula EMI0002.0018 in which formulas K and Y are reactive residues that are split off during the reaction, can act. Das auf diese Weise erhaltene ss-Pyrro- lidino-buttersäure-(2-clilor-6-nietliyl-anilid) ist ein farbloses, bei 87-88 schmelzendes Kri stallpulver; dessen Hy droehlorid schmilzt bei 185-l.86 . Das neue Anilid soll als Lokal anästhetikum und als Zwischenprodukt Ver wendung finden. The β-pyrrolidino-butyric acid (2-clilor-6-nietliyl-anilide) obtained in this way is a colorless crystal powder which melts at 87-88; its hydrochloride melts at 185-1.86. The new anilide is to be used as a local anesthetic and as an intermediate product. UNTERANSPRUCH Verfahren nach Patentanspruch, dadurch gekennzeichnet, dass man 2-Chlor-6-methyl- anilin mit einem ss-Py i,rolidino-buttersäuile- ha.logenid umsetzt. SUBSTANTIAL CLAIM Process according to patent claim, characterized in that 2-chloro-6-methyl-aniline is reacted with a ss-Py i, rolidino-buttersäuile- ha.logenid.
CH311545D 1952-02-25 1952-02-25 Process for the production of a new basic substituted fatty acid (2-halogen-6-methyl-anilide). CH311545A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH311545T 1952-02-25
CH306201T 1955-03-31

Publications (1)

Publication Number Publication Date
CH311545A true CH311545A (en) 1955-11-30

Family

ID=25735072

Family Applications (1)

Application Number Title Priority Date Filing Date
CH311545D CH311545A (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) CH311545A (en)

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