CH311549A - 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
CH311549A
CH311549A CH311549DA CH311549A CH 311549 A CH311549 A CH 311549A CH 311549D A CH311549D A CH 311549DA CH 311549 A CH311549 A CH 311549A
Authority
CH
Switzerland
Prior art keywords
methyl
anilide
halogen
fatty acid
chloro
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 CH311549A publication Critical patent/CH311549A/en

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Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C237/00Carboxylic acid amides, the carbon skeleton of the acid part being further substituted by amino groups

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

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 basiseh substituierten Fettsäure-(2-halogen-6  methyl-anilids), welehes dadurch gekennzeich- net ist, dass man auf eine Verbindung der    Formel.
EMI1.1     
 eine Verbindung der Formel
C2H5--HN--CH2--C0--Y II in welchen Formeln X und Y reaktionsfähige, bei der Reaktion sich abspaltende Reste bedeuten, einwirken lässt.



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



   Als Verbindungen der Formel II kommen beispielsweise in Frage : Äthylaminoessigsäure 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 Kohlensäure usf.



   Man kann beispielsweise 2-Chlor-6-methylanilin oder auch ein Salz desselben in Gegenwart eines für diese Zwecke geeigneten was  serabspaltenden Mittels    wie   Phosphorpent-    oxyd, Phosphoroxychlorid   usf.-mit Athyl-      aminoessigsäurehalogenid    behandeln.



   Weiter kann man auch   2-Chlor-6-methyl-    anilin bzw. ein Salz desselben mit   einem Äthyl-    aminoessigsäurehalogenid   (bzw.    einem Salz eines solchen) oder einem Anhydrid zur Reaktion bringen.



   Es ist weiterhin auch möglich, 2-Chlor-6methyl-anilin mit einem   Äthylaminoessig-    säureester, 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 Athylaminoessigsäurealkylester umzu-    setzen.



   Das auf diese Weise   erhaltene Äthylamino-      essigsäure- (2-chlor-6-methyl-anilid)    bildet ein farbloses, unter 0, 03 mm bei 140-142  siedendes   61    ; dessen Hydrochlorid schmilzt bei 267-270 . Das neue Anilid soll als Lokalanästhetikum und als Zwisehenprodukt zur Herstellung weiterer Derivate Verwendung finden.



   Beispiel :
16   GewichtsteileÄthylaminoessigsäurechlo-      rid-hydrochlorid    in Benzol werden mit einer Mischung von 14 Gewichtsteilen 2-Chlor-6-me  thyl-anilin    und 20 Gewichtsteilen   Triäthyl-    amin erwärmt. Anschliessend wird das gebildete   Triäthylaminhydrochlorid    durch Ausschütteln mit Wasser entfernt und die Ben   zollösung    nach dem Trocknen verdampft. Der Rückstand stellt   das Äthylaminoessigsäure- (2-      chlor-6-methyl-anilid) dar,    das durch Vakuumdestillation und durch ¯berf hren in das Hydroehlorid gereinigt werden kann.



   Die Reaktion kann auch ohne Verdiin  nungs-und    Kondensationsmittel   durchge-    f hrt werden, indem man beispielsweise das ¯thylaminoessigsÏure-chlorid-hydrochlorid mit   2-Chlor-6-methyl-anilin    trocken erhitzt, anschliessend die Reaktionsmasse mit Wasser verdünnt und in   iiblieher    Weise   aufarbeitet.  



  



  Process for the production of a new basic substituted fatty acid.



      (2-halo-6-methyl-anilide).



   The subject of the present patent is a process for the production of a new basic substituted fatty acid (2-halogen-6-methyl-anilide), which is characterized in that a compound of the formula.
EMI1.1
 a compound of the formula
C2H5 - HN - CH2 - C0 - Y II in which formulas X and Y mean reactive residues which split off during the reaction can act.



   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 sulfate, and the N-halo-magnesyl compounds (X = Mg . Hal) etc.



   Examples of possible compounds of the formula II are: ethylaminoacetic 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 ethylaminoacetic acid halide in the presence of an agent which splits off what is suitable for this purpose, such as phosphorus pentoxide, phosphorus oxychloride, etc.



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



   It is also possible to acylate 2-chloro-6methyl-aniline with an ethylaminoacetic acid ester, preferably an aryl ester, at elevated temperature, or, for example, a halomagnesyl-2-chloro-6-methyl-aniline (obtained by reacting the base with an alkylmagnesium halide) with an ethylaminoacetic acid alkyl ester.



   The ethylamino-acetic acid (2-chloro-6-methyl-anilide) obtained in this way forms a colorless 61 which boils below 0.03 mm at 140-142; its hydrochloride melts at 267-270. The new anilide is to be used as a local anesthetic and as an intermediate product for the production of further derivatives.



   Example:
16 parts by weight of ethylaminoacetic 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. Subsequently, the triethylamine hydrochloride formed is removed by shaking with water and the solution is evaporated after drying. The residue is ethylaminoacetic acid (2-chloro-6-methyl-anilide), which can be purified by vacuum distillation and by converting it into the hydrochloride.



   The reaction can also be carried out without diluting and condensing agents, for example by heating the ethylaminoacetic acid chloride hydrochloride dry with 2-chloro-6-methyl-aniline, then diluting the reaction mass with water and working it up in the usual way .

 

Claims (1)

PATENTANSPRUCH : Verfahren zur Herstellung eines neuen basisch substituierten Fettsäure-(2-halogen-6- methyl-anilids), dadureh gekennzeichnet, dass ¯ man auf eine Verbindung der Formel EMI2.1 eine Verbindung der Formel CsHg-HN-CHs-CO-Y in welchen Formeln X und Y reaktionsfähige, bei der Reaktion sich abspaltende Reste bedeuten, einwirken lϯt. PATENT CLAIM: Process for the preparation of a new basic substituted fatty acid (2-halogen-6-methyl-anilide), characterized in that ¯ one is based on a compound of the formula EMI2.1 a compound of the formula CsHg-HN-CHs-CO-Y, in which formulas X and Y represent reactive radicals that split off during the reaction, can act. Das auf diese Weise erhaltene Äthylamino- essigsÏure- (2-chlor-6-methyl-anilid ) ist ein farbloses, unter 0, 03 mm bei 140-142¯ siedenes 61 ; dessen Hydroehlorid sehmilzt bei 267-270 . Das neue Anilid soll als Lokalanästhetikum und als Zwischenprodukt Ver- wendung finden. The ethylamino-acetic acid (2-chloro-6-methyl-anilide) obtained in this way is colorless, 61 which boils below 0.03 mm at 140-142¯; its hydrochloride melts at 267-270. The new anilide will be used as a local anesthetic and as an intermediate product. UNTERANSPRUCH: Verfahren nach Patentanspruch, dadrch gekennzeichnet, dass man 2-Chlor-6-methyl- anilin mit einem ¯thylaminoessigsÏure-halo genid-hydrohalogenid umsetzt. SUBClaim: Process according to patent claim, characterized in that 2-chloro-6-methyl-aniline is reacted with a ¯thylaminoessigs -ure-halide hydrohalide.
CH311549D 1952-02-25 1952-02-25 Process for the production of a new basic substituted fatty acid (2-halogen-6-methyl-anilide). CH311549A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH311549T 1952-02-25
CH306201T 1955-03-31

Publications (1)

Publication Number Publication Date
CH311549A true CH311549A (en) 1955-11-30

Family

ID=25735076

Family Applications (1)

Application Number Title Priority Date Filing Date
CH311549D CH311549A (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) CH311549A (en)

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