CH311551A - 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
CH311551A
CH311551A CH311551DA CH311551A CH 311551 A CH311551 A CH 311551A CH 311551D A CH311551D A CH 311551DA CH 311551 A CH311551 A CH 311551A
Authority
CH
Switzerland
Prior art keywords
methyl
anilide
halogen
chloro
production
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 CH311551A publication Critical patent/CH311551A/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)
  • Acyclic And Carbocyclic Compounds In Medicinal Compositions (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 basisch substituierten FettsÏure-(2-halogen-6   methyl-anilids), welches dadurch gekennzeich-    net ist, dass man auf eine Verbindung der   formez   
EMI1.1     
 eine Verbindung der Formel  (n)   C4H9-HN-CH2-CO-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-Verbindungen   (X = Mg. Hal)    usf.



   Als Verbindungen der Formel II kommen beispielsweise in Frage : n-Butyl-aminoessigsäure 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-methyl-    anilin oder auch ein Salz desselben in Gegenwart eines für diese Zwecke geeigneten wasserabspaltenden Mittels wie Phosphorpentoxyd,   Phosphoroxychlorid usf.    mit   n-Butyl-    aminoessigsäure behandeln.



   Weiter kann man auch 2-Chlor-6-methylanilin bzw. ein Salz desselben mit einem   n-Bu-      tyl-aminoessigsäurehalogenid    (bzw. einem Salz eines solchen) oder einem Anhydrid zur Reaktion bringen.



   Es ist weiterhin auch möglich, 2-Chlor-6methyl-anilin mit einem n-Butyl-aminoessigsäureester, vorzugsweise einem Arylester, bei erhöhter Temperatur zu acylieren oder beispielsweise ein   Halogen-magnesyl-2-ehlor-6-    methyl-anilin (erhalten durch Umsetzen der Base mit einem Alkylmagnesiumhalid) mit einem n-Butyl-aminoessigsäurealkylester umzusetzen.



   Das auf diese Weise erhaltene   n-Butyl-      aminoessigsäure-      (2-chlor-6-methyl-anilid)    bildet ein farbloses, unter 0, 02 mm bei 140-143  siedendes   61    ; dessen Hydrochlorid schmilzt bei   231-233 .    Das neue Anilid soll als Lokal  anästhetikum    und als Zwischenprodukt zur Herstellung weiterer Derivate Verwendung finden.



   Beispiel :
18 Gewichtsteile n-Butyl-aminoessigsäure  chlorid-hydrochlorid    in Benzol werden mit einer Mischung von   14    Gewichtsteilen 2-Chlor6-methyl-anilin und 20 Gewichtsteilen Tri  äthylamin    erwärmt. Anschliessend wird das gebildete   Triäthylaminhydrochlorid    durch Aussehütteln mit Wasser entfernt und die   Benzollösung    nach dem Trocknen verdampft.



  Der Rüekstand stellt das   n-Butyl-aminoessig-      saure- (2-clilor-6-methyl-anilid)    dar, das durch Vakuumdestillation und durch ¯berf hren in das Hydroehlorid gereinigt werden kann.



   Die Reaktion kann auch ohne Verdün  nungs-und    Kondensationsmittel durehgeführt werden, indem man beispielsweise das   n-Bu-      tyl-aminoessigsäure-chlorid-hydrochlorid    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 production of a new basic substituted FettsÏure- (2-halo-6-methyl-anilids), which is characterized in that a compound of the formez
EMI1.1
 a compound of the formula (s) C4H9-HN-CH2-CO-Y II in which formulas X and Y represent reactive radicals which are split off in 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: n-butylaminoacetic acid itself and its reactive functional derivatives such as its halides, its esters, its anhydrides, for example the pure and 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 n-butylaminoacetic acid in the presence of a dehydrating agent 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 n-butylaminoacetic acid halide (or a salt of such) or an anhydride.



   It is furthermore also possible to acylate 2-chloro-6methyl-aniline with an n-butyl-aminoacetic 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 alkyl n-butyl-aminoacetate.



   The n-butylaminoacetic acid (2-chloro-6-methyl-anilide) obtained in this way forms a colorless 61, boiling below 0.02 mm at 140-143; its hydrochloride melts at 231-233. The new anilide is to be used as a local anesthetic and as an intermediate product for the production of other derivatives.



   Example:
18 parts by weight of n-butyl-aminoacetic 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 n-butyl-aminoacetic acid (2-chloro-6-methyl-anilide), which can be purified by vacuum distillation and by being converted into the hydrochloride.



   The reaction can also be carried out without diluting and condensing agents, for example by heating the n-butyl-aminoacetic 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.

 

Claims (1)

PATENTANSPRUCH : Verfahren zur Herstellung eines neuen basisch substituierten FettsÏure-(2-halogen-6 methyl-anilids), dadurch gekennzeichnet, dass man auf eine Verbindung der Formel EMI2.1 eine Verbindung der Formel (n) CHa-HN-CHa-CO-Y in welchen Formeln X und Y reaktionsfähige, bei der Reaktion sieh abspaltende Re. ste bedeuten, einwirken lässt. PATENT CLAIM: Process for the preparation of a new basic substituted FettsÏure- (2-halogen-6 methyl-anilids), characterized in that one on a compound of the formula EMI2.1 a compound of the formula (s) CHa-HN-CHa-CO-Y in which formulas X and Y reactive Re which are split off during the reaction. ste mean, let act. Das auf diese Weise erhaltcne n-ButylaminoessigsÏure- (2-chlor-6-methyl- anilid) ist ein farbloses, unter O, OZ mm bei 140-143" siedendes 61 ; dessen Hydrochlond sehmilzt bei 231-233". Das neue Anilid soll als Lokalanästhetikum und als Zwischenprodukt Verwendung finden. The n-butylaminoacetic acid (2-chloro-6-methyl-anilide) obtained in this way is a colorless 61 which boils at 140-143 "under 0.02 mm; its hydrochloride melts at 231-233". The new anilide will be used as a local anesthetic and as an intermediate product. UNTERANSPRUCH : Verfahren naeh Patentanspruch, dadurch gekennzeichnet, dass man 2-Chlor-6-methylanilin mit einem n-Butyl-aminoessigsÏure. halogenid-hydrohalogenid umsetzt. SUBClaim: Method according to patent claim, characterized in that 2-chloro-6-methylaniline with an n-butyl-aminoacetic acid. halide-hydrohalide converts.
CH311551D 1952-02-25 1952-02-25 Process for the production of a new basic substituted fatty acid (2-halogen-6-methyl-anilide). CH311551A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH311551T 1952-02-25
CH306201T 1955-03-31

Publications (1)

Publication Number Publication Date
CH311551A true CH311551A (en) 1955-11-30

Family

ID=25735078

Family Applications (1)

Application Number Title Priority Date Filing Date
CH311551D CH311551A (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) CH311551A (en)

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