CH311542A - 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
CH311542A
CH311542A CH311542DA CH311542A CH 311542 A CH311542 A CH 311542A CH 311542D A CH311542D A CH 311542DA CH 311542 A CH311542 A CH 311542A
Authority
CH
Switzerland
Prior art keywords
anilide
methyl
pyrrolidino
production
halogen
Prior art date
Application number
Other languages
German (de)
Inventor
Aktiengesellschaft Cilag
Original Assignee
Cilag Ag
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Publication date
Application filed by Cilag Ag filed Critical Cilag Ag
Publication of CH311542A publication Critical patent/CH311542A/en

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  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (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       (,in    Verfahren zur Herstellung eines neuen  basisch substituierten     Fettsäure-(2-halogen-6-          inethyl-anilids),    welches dadurch gekennzeich  net ist, dass man auf eine Verbindung der  Formel  
EMI0001.0005     
    eine Verbindung der Formel  
EMI0001.0006     
    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:       \?-Clilor-6-inethyl-anilin,    eventuell in Form sei  ner Salze, wie des Hydrochlorids oder des  Sulfates, weiter die     N-Halogen-magnesyl-Ver-          bindungen    (X     =11Zg.        Hal)        usf.     



  Als Verbindungen der Formel     II    kommen  beispielsweise in Frage:     ss-Pyrrolidino-pro-          pionsäure    selbst und ihre reaktionsfähigen  funktionellen Derivate wie ihre     Halogenide,     ihre Ester, ihre     Anhydride,    beispielsweise die       reinen    und auch die gemischten     Anhydride     mit Phosphorsäure,

   Schwefelsäure und Koh  lensäure     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-Pyrro-          lidino-propionsäure    behandeln.  



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



  Es ist weiterhin auch möglich,     2-Chlor-6-          methyl-anilin    mit einem     ss-Pyrrolidino-pro-          pionsäureester,    vorzugsweise einem.     Arylester,     bei erhöhter Temperatur zu     acylieren    oder  beispielsweise ein     Halogen-magnesyl-2-chlor-6-          methyl-anilin    (erhalten durch Umsetzen der  Base mit einem     Alkylmagnesiumhalid)    mit  einem     ss-Pyrrolidino-propionsäureester    umzu  setzen.  



  Das auf diese     kreise    erhaltene     ss-Pyrro-          lidino-        propionsäure-        (2-chlor-6-methyl    -     anilid    )  bildet ein Öl, das nach einiger Zeit zu farb  losen, bei     80     schmelzenden Kristallen er  starrt; dessen Hydrochlorid schmilzt bei<B>156</B>  bis 157 . Das neue     Anilid    soll als Lokal  anästhetikum und als     Zwisehenprodukt    zur  Herstellung weiterer Derivate Verwendung  finden.  



  <I>Beispiel 1:</I>  20 Gewichtsteile     ss    -     Pyrrolidino    -     propion-          säurechlorid-hydrochlorid    in Benzol werden      mit einer     Mischung    von 14 Gewichtsteilen       2-Chlor-6-methyl-anilin    und 20     Gewifits-          teilen        Triäthvlamin        erwärmt.    Anschliessend  wird das gebildete     Triäthylaminliydrochlorid     durch Ausschütteln mit Wasser entfernt und  die     Benzollösung    nach dem Trocknen ver  dampft.

   Der Rückstand stellt das     ss-Pyrro-          lidino-propionsäure-(2-chlorid-6-methy        l-anilid)     dar, das durch Vakuumdestillation durch  Überführen in das Hydrochlorid gereinigt  werden kann.  



  Die Reaktion     kann    auch ohne     Verdün-          nungs-    und Kondensationsmittel durchge  führt werden, indem man beispielsweise das ss  Pyr     rolidino-propionsäure-ehlorid-hydroehlorid     mit     2-Chlor-6-metlivl-anilin    trocken erhitzt,       anschliessend    die Reaktionsmasse mit Wasser  verdünnt und in üblicher Weise aufarbeitet.

    <I>Beispiel 2:</I>  Ein     Mol        Brom-magnesyl-2-elilor-6-met.liyl-          anilin    (gebildet aus     2-Chlor-6-methyl-anilin     und     Äthylmagnesiumbromid)    in Äther,     wird     mit 1,1 bis 1,2 Molen     ss-Pyrrolidino-propion-          säureäthylester    umgesetzt. Man gelangt so  ebenfalls zu dem gewünschten     Anilid.  



  Process for the production of a new basic substituted fatty acid. (2-halo-6-methyl.anilids). The subject of the present patent is (, in a process for the preparation of a new basic substituted fatty acid (2-halogen-6-ynethyl-anilide), which is characterized in that one is based on a compound of the formula
EMI0001.0005
    a compound of the formula
EMI0001.0006
    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 are, for example: Clilor-6-ynethyl-aniline, possibly in the form of its salts, such as the hydrochloride or the sulfate, and the N-halomagnesyl compounds ( X = 11Zg. Hal) etc.



  Examples of possible compounds of formula II are: ß-pyrrolidino-propionic 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-pyrrolidino-propionic acid to treat.



  Furthermore, 2-chloro-6-methyl-aniline or a salt thereof can also be reacted with an β-pyrrolidino-propionic acid halide (or a salt of such a) or an anhydride.



  It is furthermore also possible to use 2-chloro-6-methyl-aniline with an β-pyrrolidino-propionic acid ester, preferably one. Aryl esters to acylate at elevated temperature or, for example, a halomagnesyl-2-chloro-6-methyl-aniline (obtained by reacting the base with an alkylmagnesium halide) with an β-pyrrolidino-propionic acid ester.



  The ss-pyrrolidino-propionic acid (2-chloro-6-methyl-anilide) obtained in this way forms an oil, which after a while solidifies into colorless crystals that melt at 80; its hydrochloride melts at <B> 156 </B> to 157. The new anilide is said to be used as a local anesthetic and as an intermediate product for the production of further derivatives.



  Example 1: 20 parts by weight of SS-pyrrolidino-propionic 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 ss-pyrrolidino-propionic acid (2-chloride-6-methyl-anilide), which can be purified by vacuum distillation by converting it into the hydrochloride.



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

    <I> Example 2: </I> One mole of bromo-magnesyl-2-elilor-6-met.liyl-aniline (formed from 2-chloro-6-methyl-aniline and ethylmagnesium bromide) in ether is mixed with 1.1 to 1.2 moles of ß-pyrrolidino-propionic acid ethyl ester implemented. The desired anilide is also obtained in this way.

 

Claims (1)

PATENTANSPRUCH Verfahren zur Herstellung eines neuen basisch substituierten Fettsäure-(2-lialogen-6- nietlivl-,tnilids), dadurch gekennzeielniet, da1> inan auf eine Verbindung der Formel EMI0002.0031 eine Verbindung der Formel EMI0002.0032 in welchen Formeln X und F reaktionsfällige, bei der Reaktion sich abspaltende Reste be deuten, einwirken lässt. PATENT CLAIM Process for the production of a new basic substituted fatty acid (2-halogen-6-nietlivl-, tnilids), characterized by the fact that it is based on a compound of the formula EMI0002.0031 a compound of the formula EMI0002.0032 in which formulas X and F are reactive residues that are split off during the reaction, can act. Das auf diese Weise erlialtene ss-Pyrro- lidino-propionsäure- (2-clilor - 6 - met.hyl-anil id ) ist ein Öl, das nach einiger Zeit zu farblosen, bei 80 schmelzenden Kristallen erstarrt; des sen IIydroclilorid schmilzt bei 156--7.57 . Das neue Anilid soll als Lokalanästhetikum und als Zwischenprodukt. Verwendung finden. The ss-pyrrolidino-propionic acid- (2-clilor - 6 - met.hyl-anilide) obtained in this way is an oil which solidifies after some time to colorless crystals which melt at 80; The sen II hydrocliloride melts at 156--7.57. The new anilide is said to be used as a local anesthetic and as an intermediate. Find use. UNTERANSPRUCH: Verfahren nach Patentansprueli, dadurch gekennzeichnet, dass man 2-Chlor-6-methi#1- anilin mit, einem ss-Pyrrolidino-propionsäure- halogenid umsetzt. SUBSTANTIAL CLAIM: Process according to patent claims, characterized in that 2-chloro-6-methi # 1-aniline is reacted with an β-pyrrolidino-propionic acid halide.
CH311542D 1952-02-25 1952-02-25 Process for the production of a new basic substituted fatty acid (2-halogen-6-methyl-anilide). CH311542A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH311542T 1952-02-25
CH306201T 1955-03-31

Publications (1)

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CH311542A true CH311542A (en) 1955-11-30

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