AT206891B - Process for the preparation of new tertiary amines - Google Patents

Process for the preparation of new tertiary amines

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Publication number
AT206891B
AT206891B AT801158A AT801158A AT206891B AT 206891 B AT206891 B AT 206891B AT 801158 A AT801158 A AT 801158A AT 801158 A AT801158 A AT 801158A AT 206891 B AT206891 B AT 206891B
Authority
AT
Austria
Prior art keywords
preparation
tertiary amines
general formula
new tertiary
alkyl
Prior art date
Application number
AT801158A
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German (de)
Original Assignee
Thomae Gmbh Dr K
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.)
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Publication date
Application filed by Thomae Gmbh Dr K filed Critical Thomae Gmbh Dr K
Application granted granted Critical
Publication of AT206891B publication Critical patent/AT206891B/en

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Description

  

   <Desc/Clms Page number 1> 
 



  Verfahren zur Herstellung von neuen tertiären Aminen 
In der österr. Patentschrift Nr. 203496 ist ein Verfahren zur Herstellung von neuen terti- ären Aminen der allgemeinen Formel : 
 EMI1.1 
 beschrieben, wobei Nitrile der allgemeinen Formel : 
 EMI1.2 
 mit Benzylmagnesiumhalogeniden in Gegenwart von Lösungsmitteln umgesetzt und die erhaltenen Reaktionsprodukte gegebenenfalls quaternisiert werden. 



   In diesen Formeln bedeuten R Wasserstoff, eine Alkyl- oder Alkoxygruppe und Z einen gerad- oder verzweigtkettigen Alkyl-oder Alkenylrest. 



   Es wurde nun gefunden, dass man tertiäre Amine der allgemeinen Formel : 
 EMI1.3 
 worin R Wasserstoff, eine Alkyl- oder Alkoxygruppe und A einen gerad- oder verzweigtkettigen Alkyl- oder Alkenylrest mit mindestens 2 Kohlenstoffatomen bedeuten, in guter Ausbeute erhält, wenn man auf primäre Amine der allgemeinen Formel : 
 EMI1.4 
 worin R und A die oben angegebene Bedeutung zukommt, in an sich bekannter Weise 1, 4-Dihalogenbutan einwirken lässt, wobei der Pyrrolidinring gebildet wird. 



   Die erfindungsgemäss erhaltenen Verbindungen sind wertvolle Therapeutika. Die Wirkungen wurden bereits in der österr. Patentschrift Nr. 



  203496 abgehandelt. 



   Beispiel : 7 g l-Phenyl-2-amino-pentan und 9 g   1, 4-Dibrombutan   werden mit 2 g Natriumacetat in 50 cm3 Isopropanol 4 Stunden unter Rückfluss erhitzt. Nach dem Abdestillieren des Isopropanols nimmt man den Rückstand in verdünnter Salzsäure auf und wäscht ihn mit Äther. 



  Die saure wässerige Schicht wird dann alkalisch gemacht und das abgeschiedene Öl in Äther aufgenommen, das nach dem Trocknen über Natriumsulfat und Verjagen des Lösungsmittels destilliert wird. Man erhält 4 g l-Phenyl-2-   pyrrolidino-pentan vom Kpo, ? ;,   =   1000 C,   dessen aus Aceton umkristallisiertes Hydrochlorid bei   133-1348 C   schmilzt. 

**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.



   <Desc / Clms Page number 1>
 



  Process for the preparation of new tertiary amines
In the Austrian patent specification no. 203496 there is a process for the preparation of new tertiary amines of the general formula:
 EMI1.1
 described, where nitriles of the general formula:
 EMI1.2
 reacted with benzylmagnesium halides in the presence of solvents and the reaction products obtained are optionally quaternized.



   In these formulas, R is hydrogen, an alkyl or alkoxy group, and Z is a straight or branched alkyl or alkenyl radical.



   It has now been found that tertiary amines of the general formula:
 EMI1.3
 where R is hydrogen, an alkyl or alkoxy group and A is a straight or branched chain alkyl or alkenyl radical with at least 2 carbon atoms, is obtained in good yield if one uses primary amines of the general formula:
 EMI1.4
 in which R and A have the meaning given above, in a manner known per se, 1,4-dihalobutane is allowed to act, the pyrrolidine ring being formed.



   The compounds obtained according to the invention are valuable therapeutic agents. The effects were already mentioned in the Austrian patent no.



  203496 dealt with.



   Example: 7 g of 1-phenyl-2-aminopentane and 9 g of 1,4-dibromobutane are refluxed with 2 g of sodium acetate in 50 cm3 of isopropanol for 4 hours. After the isopropanol has been distilled off, the residue is taken up in dilute hydrochloric acid and washed with ether.



  The acidic aqueous layer is then made alkaline and the separated oil taken up in ether which, after drying over sodium sulfate and driving off the solvent, is distilled. 4 g of l-phenyl-2-pyrrolidino-pentane from the Kpo are obtained, ;, = 1000 C, whose hydrochloride recrystallized from acetone melts at 133-1348 C.

** WARNING ** End of DESC field may overlap beginning of CLMS **.

 

Claims (1)

PATENTANSPRUCH : Verfahren zur Herstellung von neuen tertiären Aminen der allgemeinen Formel : EMI1.5 worin R Wasserstoff, eine Alkyl- oder Alkoxygruppe und A einen gerad- oder verzweigtkettigen Alkyl- oder Alkenylrest mit mindestens 2 Kohlenstoffatomen bedeuten, dadurch gekennzeichnet, dass man auf primäre Amine der allgemeinen Formel : EMI1.6 worin R und A die oben angegebene Bedeutung zukommt, 1, 4-Dihalogenbutan einwirken lässt. **WARNUNG** Ende CLMS Feld Kannt Anfang DESC uberlappen**. PATENT CLAIM: Process for the preparation of new tertiary amines of the general formula: EMI1.5 where R is hydrogen, an alkyl or alkoxy group and A is a straight or branched chain alkyl or alkenyl radical with at least 2 carbon atoms, characterized in that primary amines of the general formula are used: EMI1.6 wherein R and A are as defined above, allowing 1,4-dihalobutane to act. ** WARNING ** End of CLMS field may overlap beginning of DESC **.
AT801158A 1957-05-27 1958-05-08 Process for the preparation of new tertiary amines AT206891B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE206891X 1957-05-27

Publications (1)

Publication Number Publication Date
AT206891B true AT206891B (en) 1959-12-28

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Application Number Title Priority Date Filing Date
AT801158A AT206891B (en) 1957-05-27 1958-05-08 Process for the preparation of new tertiary amines

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AT (1) AT206891B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1161274B (en) * 1960-04-07 1964-01-16 Thomae Gmbh Dr K Process for the preparation of ª ‡ -Pyrrolidinoketonen and their salts

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1161274B (en) * 1960-04-07 1964-01-16 Thomae Gmbh Dr K Process for the preparation of ª ‡ -Pyrrolidinoketonen and their salts

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