CH311544A - 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
CH311544A
CH311544A CH311544DA CH311544A CH 311544 A CH311544 A CH 311544A CH 311544D A CH311544D A CH 311544DA CH 311544 A CH311544 A CH 311544A
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 CH311544A publication Critical patent/CH311544A/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   I3erstellung    eines neuen    basiseh substituierten Fettsäure- (-halogen-6-    methyl-anilids), welches dadurch   gekennzeich-    net ist, dass man auf eine Verbindung der
EMI1.1     


<tb> Formel
<tb>  <SEP> Cl
<tb>  <SEP> 1
<tb>  <SEP> U-t13
<tb> (: <SEP> 1H3
<tb>  eine Verbindung der Formel
EMI1.2     
 in welehen Formeln X und Y reaktionsfähige, bei der Reaktion sich abspaltende Reste bedeuten, einwirken   lä#t.   



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



   Als Verbindungen der Formel II kommen beispielsweise in Frage   : 23-Diäthylamino-but-    tersäure selbst und ihre reaktionsfähigen funktionellen Derivate wie ihre Halogenide, ilire Ester, ihre Anhydride, beispielsweise die reinen und aneh die gemischten Anhydride mit Phosphorsäure,   Sehwefelsäure und Koll-    lensäure usf.



   Man kann beispielsweise 2-Chlor-6-methylanilin oder aueh ein Salz desselben in Gegenwart eines für cliese   Zweeke    geeigneten wasserabspaltenden Mittels wie   Phosphorpent-    oxyd, Phosphoroxychlorid usf. mit   B-Diäthyl-    amino-buttersäure behandeln.



   Weiter kann man auch 2-Chlor-6-methylanilin bzw. ein Salz desselben mit einem   , B-Diäthylamino-buttersäurehalogenid    (bzw. einem Salz eines solchen) oder einem Anhydrid zur Reaktion bringen.



   Es ist weiterhin auch möglich, 2-Chlor-6  methyl-anilin    mit einem   jB-Diäthylamino-but-    tersäureester, vorzugsweise einem Arylester, bei erhöhter Temperatur zu   acylieren    oder beispielsweise ein Halogen-magnesyl-2-chlor-6methyl-a. nilin (erhalten durch Umsetzen der Base mit einem   Alkylmagnesiumhalid)    mit    einem-Diäthylamino-buttersäurealkylester    umzusetzen.



   Das auf diese Weise erhaltene   B-Diäthyl-       amino-buttersäure- (2-chlor-6-methyl-anilid)    bildet ein farbloses, bei 60-63    schmelzendes    Kristallpulver. Das neue Anilid soll als Lokalanästhetikum und als Zwischenprodukt zur Herstellung weiterer Derivate Verwendung finden.



   Beispiel :
22   Gewichtsteile/3-Diäthylamino-butter-      säurechlorid-hydroehlorid    in Benzol werden mit einer Mischung von 14 Gewichtsteilen 2-Chlor-6-methyl-anilin und 20 Gewiehtsteilen Triäthylamin erwärmt. Anschliessend wird das gebildete   Triäthylaminhydrochlorid    durch  Ausschütteln mit Wsser entfernt und die   Benzollösung    nach dem Trocknen verdampft.



  Der Rückstand stellt das ss-Diäthylamino-buttersäure-   (2-ehlor-6-methyl-anilid)    dar, das durch   Umkristallisation aus Petroläther ge-    reinigt werden kann.



   Die   Reaktion kann auch ohne Verdün-      nungs-und    Kondensationsmittel durchgeführt werden, indem man beispielsweise das   8-Di-    äthylamino-buttersäure-chlorid-hydrochlorid mit   2-Chlor-6-methcl-anilin    trocken erhitzt.   ansehliessend    die Reaktionsmasse mit   Amasser    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 fatty acid (-halogen-6-methyl-anilide), which is characterized in that one clicks on a compound of the
EMI1.1


<tb> formula
<tb> <SEP> Cl
<tb> <SEP> 1
<tb> <SEP> U-t13
<tb> (: <SEP> 1H3
<tb> a compound of the formula
EMI1.2
 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 are, for example: 2-chloro-6-methyl-aniline, possibly in the form of its salts, such as hydroe. chloride or sulfate, further the N-halo-magnesyl compounds (X = Mg. Hal) etc.



   Examples of possible compounds of the formula II are: 23-diethylamino butyric acid itself and its reactive functional derivatives such as its halides, their esters, their anhydrides, for example the pure and mixed anhydrides with phosphoric acid, sulfuric acid and collagenic acid, etc. .



   For example, 2-chloro-6-methylaniline or a salt thereof can be treated with B-diethylamino-butyric acid in the presence of a dehydrating agent suitable for these purposes, such as phosphorus pentoxide, phosphorus oxychloride, etc.



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



   It is furthermore also possible to acylate 2-chloro-6-methyl-aniline with a β-diethylamino-but-acid ester, preferably an aryl ester, at elevated temperature or, for example, a halomagnesyl-2-chloro-6methyl-α. niline (obtained by reacting the base with an alkyl magnesium halide) with an alkyl diethylamino-butyrate.



   The B-diethylamino-butyric acid (2-chloro-6-methyl-anilide) obtained in this way forms a colorless crystal powder which melts at 60-63. The new anilide is to be used as a local anesthetic and as an intermediate product for the production of further derivatives.



   Example:
22 parts by weight of 3-diethylamino-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 s-diethylamino-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 and condensing agent, for example by heating the 8-diethylamino-butyric acid chloride hydrochloride to dryness with 2-chloro-6-methyl-aniline. Then the reaction mass is diluted with Amasser and worked up in the usual way.

 

Claims (1)

PATENTANSPRUCH : Verfahren zur Herstellung eines neuen basisch substituierten Fettsäure- (2-halogen-6- methyl-anilids), dadurch gekennzeichnet, da# man auf eine Verbindung der Formel EMI2.1 eine Verbindung der Fomnel EMI2.2 in welchen Formeln X und Y reaktionsfähige, bei der Reaktion sieh abspaltende Reste bedeuten, einwirken lässt. PATENT CLAIM: Process for the preparation of a new basic substituted fatty acid (2-halogen-6-methyl-anilide), characterized in that a compound of the formula EMI2.1 a compound of the Fomnel EMI2.2 in which formulas X and Y mean reactive radicals which split off during the reaction, can act. Das auf diese Weise erhaltene -Diäthy]- amino-buttersäure- (2-chlor-6-methyl-anilid) ist ein farbloses, bei 60-63 sehmelzendes Kri- stallpulver. Das neue Anilid soll als Lokal anästhetikum und als Zwischenprodukt Verwendung finden. rNTERANSPRUCH : Verfahren nach Patentanspruch, dadurch gekennzeichnet, dass man 2-Chlor-6-methyl- anilin mit einem ss-Diathylamino-buttersaure- halogenid umsetzt. The diethy] amino-butyric acid (2-chloro-6-methyl-anilide) obtained in this way is a colorless crystal powder that melts at 60-63. The new anilide will be used as a local anesthetic and as an intermediate product. CLAIM: Process according to patent claim, characterized in that 2-chloro-6-methyl-aniline is reacted with an β-diethylamino-butyric acid halide.
CH311544D 1952-02-25 1952-02-25 Process for the production of a new basic substituted fatty acid (2-halogen-6-methyl-anilide). CH311544A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH311544T 1952-02-25
CH306201T 1955-03-31

Publications (1)

Publication Number Publication Date
CH311544A true CH311544A (en) 1955-11-30

Family

ID=25735071

Family Applications (1)

Application Number Title Priority Date Filing Date
CH311544D CH311544A (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) CH311544A (en)

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