CH306903A - Process for the production of a new dioxopiperidine. - Google Patents

Process for the production of a new dioxopiperidine.

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Publication number
CH306903A
CH306903A CH306903DA CH306903A CH 306903 A CH306903 A CH 306903A CH 306903D A CH306903D A CH 306903DA CH 306903 A CH306903 A CH 306903A
Authority
CH
Switzerland
Prior art keywords
new
dioxopiperidine
phenyl
diethylamino
formula
Prior art date
Application number
Other languages
German (de)
Inventor
Aktiengesellschaft Ciba
Original Assignee
Ciba Geigy
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 Ciba Geigy filed Critical Ciba Geigy
Publication of CH306903A publication Critical patent/CH306903A/en

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  • Hydrogenated Pyridines (AREA)

Description

  

  Verfahren zur Herstellung eines neuen     Diogopiperidins.            Gegenstand    des vorliegenden Patentes ist  ein Verfahren zur Herstellung eines     Dioxo-          piperidins,    das dadurch gekennzeichnet ist,  dass man eine Verbindung der Formel  
EMI0001.0005     
    worin X und     X1    zur Gruppe     -CO-NH-CO-          kondensierbare    Reste darstellen, unter Bil  dung dieser Gruppe     intramolekular    konden  siert.  



  Das so erhaltene     3-Phenyl-3-(y-diäthyl-          aininopropyl)-2,6-dioxo-piperidin    der Formel  
EMI0001.0012     
         %-om        Kp.    198-205  (0,2     mm)    ist neu. Sein       Hydrochlorid    schmilzt bei 187-190 .  



  Es besitzt ausgesprochen     parasympathico-          lytisehe    Wirksamkeit und soll als Heilmittel  Verwendung finden.  



  Zur Herstellung des neuen     Dioxopiperi-          dins    kann man zum Beispiel die     Monoamide     der     2-Plienyl-2-(y-diäthylamino-propyl)-pen-          tan-1,5-clisättre    oder deren an der Carboxyl-         gruppe    abgewandelte funktionelle Derivate  durch     intramolekulare    Reaktion in das     cy-          clische        Imid    überführen.  



  Dabei können die     Amide    oder deren Deri  vate auch unmittelbar vor der     Cyclisierung,     z. B. in Gegenwart eines die     Cyclisierung    her  beiführenden Kondensationsmittels, gebildet  werden. So kann man beispielsweise die Mono  nitrile,     Nitrilester,        Nitrilamide    oder das     Di-          nitril    der     2-Phenyl-2-(y-diäthylamino-propyl)-          pentan-1,5-disäure    verwenden und diese in  An- oder Abwesenheit von Lösungsmitteln,  wie Eisessig, mit einem     Kondensations-    und  verseifenden Mittel behandeln.

   Weiter kann  man das gewünschte Endprodukt erhalten,  indem man ein     Ammoniumsalz    der genannten       Pentan-1,5-disäure    in Gegenwart von Konden  sationsmitteln erhitzt, wobei sich das entspre  chende     Säureamid    intermediär bildet. Ferner  kann man die     2-Phenyl-2-(y-diäthylamino-pro-          pyl)-pentan-1,5-disäure    oder deren funktio  nelle Derivate, wie das     Anhydrid    oder deren       Halogenide,    mit Ammoniak behandeln, wobei  ebenfalls intermediär ein     Ainid    entsteht.  



  Als Kondensationsmittel kommen zum Bei  spiel     konz.    Schwefelsäure, die auch     verseifend     wirken kann,     Acetanhydrid,        Zinntetrachlorid,     ferner     Titantetrachlorid    sowie     Bortrifluorid-          ätherate,    Zinkchlorid, Aluminiumchlorid oder  deren Gemische in Betracht.  



  <I>Beispiel:</I>  Zu 35 Gewichtsteilen     2-Phenyl-2-        (y-di-          äthy        lamino    -     propyl)    -     pentan-1,5-disäLire    -di-           nitril,    gelöst in 30     Volumteilen    Eisessig, wer  den in Portionen 50     Volumteile    konzentrierter  Schwefelsäure zugefügt. Die Temperatur des  Reaktionsgemisches steigt dabei auf 120 , und  nach dem Abklingen der     exothermen    Reaktion  hält. man das Ganze noch während kurzer Zeit  auf einer Temperatur von 110-120 .

   Man  giesst     auf    Eis und Natronlauge, extrahiert das  Ganze mit Chloroform, wäscht den     Chloro-          formauszug    mit -Wasser, trocknet über Pott  asche und destilliert das Lösungsmittel ab.  Man erhält so das     3-Phenyl-3-(y-diäthylamino-          propyl)-2,6-dioxo-piperidin    der Formel  
EMI0002.0010     
    als     hochviskoses    Öl vom     Kp.198-205     (0,2 mm),  dessen     Hydroohlorid,    hergestellt in üblicher  Weise, nach     Umkristallisieren    aus Aceton un  ter Zusatz von Essigester bei 187-190        schmilzt.     



  Das in diesem Beispiel als Ausgangsstoff  verwendete 2 -     Phenyl    - 2- (y -     diäthylamino-pr        o-          pyl)-pentan-1,5-disäiire-dinitril    kann beispiels  weise auf folgendem Wege hergestellt werden  Durch Kondensation von     Benzylcyanid    mit       y-Chlorpropy        1-diätliylamin    in Gegenwart. von       Natriumamid    erhält man das     Phenyl-(y-di-          äthylamino-propyl)-essigsäure-nitril    vom Kp.

         121-125     (0,15 mm), das durch Umsetzung  mit     Aertrlsäurenitril    in Anwesenheit eines  basischen Katalysators in das     2-Phenyl-2-(y-          diäthylamino        -propy    1) -     pentan    -1,5 -     disäure-di-          nitril    vom Kp.     158-164     (0,3 mm) überge  führt werden kann.



  Process for the preparation of a new diogopiperidine. The present patent relates to a process for the preparation of a dioxopiperidine, which is characterized in that a compound of the formula
EMI0001.0005
    wherein X and X1 to the group -CO-NH-CO- represent condensable radicals, with formation of this group condensed intramolecularly.



  The 3-phenyl-3- (γ-diethyl aininopropyl) -2,6-dioxo-piperidine of the formula obtained in this way
EMI0001.0012
         % -om bp 198-205 (0.2 mm) is new. Its hydrochloride melts at 187-190.



  It has pronounced parasympathetic effectiveness and is said to be used as a remedy.



  To prepare the new dioxopiperidine, for example, the monoamides of the 2-plienyl-2- (γ-diethylamino-propyl) -pentane-1,5-clisaturates or their functional derivatives modified at the carboxyl group can be used by intramolecular reaction convert into the cyclic imide.



  The amides or their derivatives can also be used immediately before the cyclization, eg. B. in the presence of a condensing agent bringing about the cyclization. For example, the mononitrile, nitrile esters, nitrile amides or the di-nitrile of 2-phenyl-2- (y-diethylamino-propyl) - pentane-1,5-diacid can be used and this in the presence or absence of solvents, such as Treat glacial acetic acid with a condensation and saponifying agent.

   The desired end product can also be obtained by heating an ammonium salt of said pentane-1,5-diacid in the presence of condensation agents, the corresponding acid amide being formed as an intermediate. Furthermore, the 2-phenyl-2- (γ-diethylamino-propyl) -pentane-1,5-diacid or their functional derivatives, such as the anhydride or their halides, can be treated with ammonia, an amide also being formed as an intermediate .



  As a condensing agent come for example conc. Sulfuric acid, which can also have a saponifying effect, acetic anhydride, tin tetrachloride, also titanium tetrachloride and boron trifluoride etherates, zinc chloride, aluminum chloride or mixtures thereof.



  <I> Example: </I> To 35 parts by weight of 2-phenyl-2- (y-diethylamino-propyl) -pentane-1,5-disäLire -dinitril, dissolved in 30 parts by volume of glacial acetic acid, are added in Portions of 50 parts by volume of concentrated sulfuric acid were added. The temperature of the reaction mixture rises to 120 and holds after the exothermic reaction has subsided. the whole thing for a short time at a temperature of 110-120.

   It is poured onto ice and sodium hydroxide solution, the whole is extracted with chloroform, the chloroform extract is washed with water, dried over pot ash and the solvent is distilled off. This gives 3-phenyl-3- (γ-diethylaminopropyl) -2,6-dioxo-piperidine of the formula
EMI0002.0010
    as a highly viscous oil of bp 198-205 (0.2 mm), the hydrochloride of which, prepared in the usual way, melts after recrystallization from acetone under the addition of ethyl acetate at 187-190.



  The 2-phenyl-2- (y-diethylamino-propyl) -pentane-1,5-disäiire-dinitril used as starting material in this example can be prepared, for example, in the following way: By condensation of benzyl cyanide with y-chloropropy 1 -diätliylamin in the presence. from sodium amide one obtains the phenyl (y-diethylamino-propyl) acetic acid nitrile of bp.

         121-125 (0.15 mm), which by reaction with Aertrlsäurenitril in the presence of a basic catalyst in the 2-phenyl-2- (y-diethylamino-propy 1) - pentane -1,5 - diacid dinitrile of bp 158-164 (0.3 mm) can be transferred.

 

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines neuen Dioxopiperidins, dadurch gekennzeichnet, dass man eine Verbindung der Formel EMI0002.0039 worin X und X, zur Gruppe -CO-NH-CO- kondensierbare Reste darstellen, unter Bil dung dieser Gruppe intramolekular konden siert. Das so erhaltene 3-Phenyl-3-(y-diäthyl- amino-propyl)-2,6-dioxo-piperidin der Formel EMI0002.0045 vom Kp. 198-205 (0,2 mm) ist neu. PATENT CLAIM: Process for the preparation of a new dioxopiperidine, characterized in that a compound of the formula EMI0002.0039 wherein X and X, to the group -CO-NH-CO- are condensable radicals, condensed intramolecularly to form this group. The 3-phenyl-3- (γ-diethylamino-propyl) -2,6-dioxo-piperidine of the formula obtained in this way EMI0002.0045 from bp 198-205 (0.2 mm) is new. Es besitzt ausgesprochen parasympathieo- lytische Wirksamkeit und soll als Heilmittel Verwendung finden. UNTERANSPRUCH: Verfahren nach Patentanspruch, dadurch gekennzeichnet, dass man einen Ausgangsstoff der angegebenen Formel intramolekular kon densiert, welcher in Gegenwart eines die Cy- clisierung herbeiführenden Kondensationsmit tels gebildet wurde: It has a pronounced parasympatholytic effect and is said to be used as a remedy. SUBSTANTIAL CLAIM: Process according to patent claim, characterized in that a starting material of the formula given is condensed intramolecularly, which was formed in the presence of a condensation agent which causes the cyclization:
CH306903D 1950-07-07 1950-07-07 Process for the production of a new dioxopiperidine. CH306903A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH302311T 1950-07-07
CH306903T 1950-07-07

Publications (1)

Publication Number Publication Date
CH306903A true CH306903A (en) 1955-04-30

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ID=25734478

Family Applications (1)

Application Number Title Priority Date Filing Date
CH306903D CH306903A (en) 1950-07-07 1950-07-07 Process for the production of a new dioxopiperidine.

Country Status (1)

Country Link
CH (1) CH306903A (en)

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