CH329195A - Process for the preparation of aliphatic acid amides - Google Patents

Process for the preparation of aliphatic acid amides

Info

Publication number
CH329195A
CH329195A CH329195DA CH329195A CH 329195 A CH329195 A CH 329195A CH 329195D A CH329195D A CH 329195DA CH 329195 A CH329195 A CH 329195A
Authority
CH
Switzerland
Prior art keywords
sep
formula
acid amides
aliphatic acid
preparation
Prior art date
Application number
Other languages
German (de)
Inventor
Hans Dr Suter
Zutter Hans
Widler Hans
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 CH329195A publication Critical patent/CH329195A/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)
  • Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

  

  



  Verfahren zur Herstellung von aliphatischen Säureamiden
Das vorliegende Patent bezieht sich   auX    ein Verfahren zur Herstellung von aliphati  schen      Sänreamiden der    Formel
EMI1.1     
 in welcher Ar-einen gegebenenfalls   dureh    Substituenten erster Ordnung substituierten Phenylrest, R, Wasserstoff oder Methyl,   R2    Wasserstoff, niedriges Alkyl oder Aralkyl und Am eine sekundäre oder tertiäre Aminogruppe darstellt. Aliphatische Säureamide der obigen Formel besitzen wertvolle   anasthetische    Eigenschaften. Solche Amide sind in den   Schweizer-    Patentsehiiften Nr.   311558-3116. 77,    und   311645-311709 beschrieben.

   Nach    diesen Patentschriftenwerden die aliphatischen Säureamide hergestellt, indem man entweder einen basischen Äther, z. B. ein Phenoxyäthylamin oder ein Phenoxyisopropylamin, in-einer Stufe   aminoacyliert,    oder aber indem man ein   Paraffinearbonsäure-phenoxyäthyl-oder      -isopropylamid, das    im   Paraffinrest    einen gegen eine   basisehe    Gruppe austauschbaren   Substi-    tuenten enthält, mit einem Amin umsetzt.



   Es wurde nun gefunden, dass man die aliphatischen Säureamide der obigen Formel auch herstellen kann, indem man einen reak  tionsfähigen    Ester eines Alkohols der Formel
EMI1.2     
 mit einem Säureamid der Formel
EMI1.3     
 umsetzt. Dieses Verfahren bildet den   Gegen-    stand des vorliegenden Patentes.



   Als reaktionsfähige Ester der Alkohole der Formel I kann man die   Halogenwasserstoff-    ester, die   Alkyl-oder    Arylsulfonsäureester verwenden. Das Amid der Formel II gelangt vorzugsweise in Form eines Alkalisalzes zur Umsetzung. Die Reaktion kann in inerten   Losungs-bzw.    Verdünnungsmitteln   durehge-    führt werden.



   Beispiel.



   15 g   N-Methyl-diäthylaminoacetamid    werden in 150 cm3 absolutem Toluol gelöst und unter   Turbinieren    langsam mit 2,5 g   gepul-    vertem Natriumamid versetzt. Man lässt   cinige Stunden rühren    und versetzt die Lösung tropfenweise mit 20,5 g   2-Phenoxyäthyl-    bromid in 50 cm3 absolutem Toluol. Nach 10 Stunden erhitzt man das Ganze 2 Stunden auf 100 , kühlt dann ab und versetzt mit Wasser und Salzsäure. Der wässrige saure Teil wird abgetrennt, alkaliseh gemacht und das   sieh      abscheidende    Amid in Äther aufgenommen. Nach dem Trocknen des   Äthers    wird verdampft und der Rüekstand im Hochvakuum destilliert.

   Man erhält so das   N- (1-       Phenoxy-äthyl-2)-N-methyl-dia, thylaminoacet-    amid als farbloses, unter 0,02 mm bei 136 bis   137     übergehendes   Öl.    



   Ausser den in den eingangs zitierten Schweizer Patentschriften beschriebenen ali  phatischen    Säureamiden können noch die folgenden Verbindungen nach dem im Beispiel beschriebenen Verfahren hergestellt werden :
EMI2.1     


<tb>  <SEP> Ar <SEP> R. <SEP> R2 <SEP> Alkyl <SEP> Am <SEP> Sdp <SEP>   <SEP> C/nm
<tb>  <SEP> CHs
<tb> p-CL-C6H4-H <SEP> H-CH2-CH2--N <SEP> 167-168/0, <SEP> 01
<tb>  <SEP> 02H6
<tb>  <SEP> xCH3
<tb> p-CL-C6H4-H <SEP> H-CH2-CH2-- <SEP> ;

   <SEP> 171-172/0, <SEP> 01
<tb>  <SEP> CH2-CH2-CH3
<tb>  <SEP> zCEI3
<tb> p-CL-C6H4-H <SEP> H-CH2-CH2--N <SEP> 174-175/0, <SEP> 005
<tb>  <SEP> CoHon
<tb>  <SEP> CH3
<tb>  <SEP> C6H5-H <SEP> H <SEP> H-CH2-CH2-N <SEP> 134-135/0, <SEP> 003
<tb>  <SEP> C2H6
<tb>  <SEP> CH3
<tb>  <SEP> C6HS-H <SEP> H-CH2-CH2-N'149-150/0, <SEP> 005
<tb>  <SEP> \CsH7n
<tb>  <SEP> CH3
<tb>  <SEP> C6H5-H <SEP> H-CH2-CH2--Nu <SEP> 155-156/0,005
<tb>  <SEP> C4Hon
<tb>



  



  Process for the preparation of aliphatic acid amides
The present patent relates to a process for the preparation of aliphatic sänreamiden of the formula
EMI1.1
 in which Ar- is a phenyl radical optionally substituted by first-order substituents, R, hydrogen or methyl, R2 is hydrogen, lower alkyl or aralkyl and Am is a secondary or tertiary amino group. Aliphatic acid amides of the above formula have valuable anesthetic properties. Such amides are described in Swiss Patent Publication No. 311558-3116. 77, and 311645-311709.

   According to these patents, the aliphatic acid amides are prepared by either adding a basic ether, e.g. B. a phenoxyethylamine or a phenoxyisopropylamine, aminoacylated in one stage, or by reacting a paraffin arboxylic acid phenoxyethyl or isopropyl amide which contains a substituent which can be exchanged for a basic group in the paraffin residue with an amine.



   It has now been found that the aliphatic acid amides of the above formula can also be prepared by using a reactive ester of an alcohol of the formula
EMI1.2
 with an acid amide of the formula
EMI1.3
 implements. This process forms the subject of the present patent.



   The reactive esters of the alcohols of the formula I which can be used are the hydrogen halide esters, the alkyl or aryl sulfonic acid esters. The amide of the formula II is preferably reacted in the form of an alkali metal salt. The reaction can or in inert solution. Thinners are carried out.



   Example.



   15 g of N-methyl-diethylaminoacetamide are dissolved in 150 cm3 of absolute toluene, and 2.5 g of powdered sodium amide are slowly added while stirring. The mixture is left to stir for a few hours and 20.5 g of 2-phenoxyethyl bromide in 50 cm3 of absolute toluene are added dropwise to the solution. After 10 hours, the whole is heated to 100 for 2 hours, then cooled, and water and hydrochloric acid are added. The aqueous acidic part is separated off, made alkaline and the amide which separates out is taken up in ether. After the ether has dried, it is evaporated and the residue is distilled in a high vacuum.

   The N- (1-phenoxy-ethyl-2) -N-methyl-dia, thylaminoacetamide is thus obtained as a colorless oil which fades at 136 to 137 under 0.02 mm.



   In addition to the aliphatic acid amides described in the Swiss patents cited above, the following compounds can also be prepared by the process described in the example:
EMI2.1


<tb> <SEP> Ar <SEP> R. <SEP> R2 <SEP> Alkyl <SEP> Am <SEP> Sdp <SEP> <SEP> C / nm
<tb> <SEP> CHs
<tb> p-CL-C6H4-H <SEP> H-CH2-CH2 - N <SEP> 167-168 / 0, <SEP> 01
<tb> <SEP> 02H6
<tb> <SEP> xCH3
<tb> p-CL-C6H4-H <SEP> H-CH2-CH2-- <SEP>;

   <SEP> 171-172 / 0, <SEP> 01
<tb> <SEP> CH2-CH2-CH3
<tb> <SEP> zCEI3
<tb> p-CL-C6H4-H <SEP> H-CH2-CH2 - N <SEP> 174-175 / 0, <SEP> 005
<tb> <SEP> CoHon
<tb> <SEP> CH3
<tb> <SEP> C6H5-H <SEP> H <SEP> H-CH2-CH2-N <SEP> 134-135 / 0, <SEP> 003
<tb> <SEP> C2H6
<tb> <SEP> CH3
<tb> <SEP> C6HS-H <SEP> H-CH2-CH2-N'149-150 / 0, <SEP> 005
<tb> <SEP> \ CsH7n
<tb> <SEP> CH3
<tb> <SEP> C6H5-H <SEP> H-CH2-CH2 - Nu <SEP> 155-156 / 0.005
<tb> <SEP> C4Hon
<tb>

 

Claims (1)

PATENTANSPRUCH Verfahren zur Serstellung von aliphati schen Säureamiden der Formel EMI2.2 in welcher Ar einen gegebenenfalls durch Substituenten erster Ordnmg substituierten Phenylrest, Rl Wasserstoff oder Methyl, R2 Wasserstoff, niedriges Alkyl oder Aralkyl und Am eine sekundäre oder tertiäre Amino- gruppe darstellt, dadurch gekennzeichnet, dass man einen reaktionsfähigen Ester eines Alkohols der Formel EMI2.3 mit einem Säureamid der Formel umsetzt. PATENT CLAIM Process for the preparation of aliphatic acid amides of the formula EMI2.2 in which Ar is a phenyl radical optionally substituted by substituents of the first order, Rl is hydrogen or methyl, R2 is hydrogen, lower alkyl or aralkyl and Am is a secondary or tertiary amino group, characterized in that a reactive ester of an alcohol of the formula EMI2.3 with an acid amide of the formula. HN-CO-Alkyl-Am R2 UNTERANSPRUCH Verfahren nach Patentanspruch, dadurch gekennzeichnet, dass man als reaktionsfähigen Ester eines Alkohols der Formel I einen Halogenwasserstoffester verwendet. HN-CO-alkyl-Am R2 UNDER CLAIM Process according to patent claim, characterized in that a hydrogen halide ester is used as the reactive ester of an alcohol of the formula I.
CH329195D 1952-12-05 1952-12-05 Process for the preparation of aliphatic acid amides CH329195A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH329195T 1952-12-05

Publications (1)

Publication Number Publication Date
CH329195A true CH329195A (en) 1958-04-15

Family

ID=4501233

Family Applications (1)

Application Number Title Priority Date Filing Date
CH329195D CH329195A (en) 1952-12-05 1952-12-05 Process for the preparation of aliphatic acid amides

Country Status (1)

Country Link
CH (1) CH329195A (en)

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