CH371803A - Process for the preparation of new N-heterocyclic compounds - Google Patents

Process for the preparation of new N-heterocyclic compounds

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Publication number
CH371803A
CH371803A CH1041563A CH1041563A CH371803A CH 371803 A CH371803 A CH 371803A CH 1041563 A CH1041563 A CH 1041563A CH 1041563 A CH1041563 A CH 1041563A CH 371803 A CH371803 A CH 371803A
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CH
Switzerland
Prior art keywords
acid
molecular weight
new
low molecular
group
Prior art date
Application number
CH1041563A
Other languages
German (de)
Inventor
Walter Dr Schindler
Original Assignee
Geigy Ag J R
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 Geigy Ag J R filed Critical Geigy Ag J R
Priority to CH1041563A priority Critical patent/CH371803A/en
Publication of CH371803A publication Critical patent/CH371803A/en

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  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Nitrogen Condensed Heterocyclic Rings (AREA)

Description

  

  Verfahren     zur        Herstellung    von neuen     N-heterocyclischen        Verbindungen       Die vorliegende Erfindung betrifft ein     Verfahren     zur Herstellung von neuen     heterocyclischen        Azepin-          derivaten        mit    wertvollen pharmakologischen Eigen-  
EMI0001.0010     
    worin R einen niedermolekularen     Alkylrest,    Am eine  niedermolekulare     Dialkylaminogruppe,

      deren     Alkyl-          reste    auch unter sich direkt oder über     ein    Sauer  stoffatom, eine niedermolekulare     Alkyliminogruppe     oder     Alkanoyloxy-alkyliminogruppe    verbunden sein  können, und n 1, 2 oder 3 bedeuten, welche Ver  bindungen wertvolle     pharmakologische    Eigenschaf-  
EMI0001.0019     
    mittels     Alkalimetall-Erdmetallhydriden,    insbesondere       Lithiumaluminiumhydrid,    reduziert.  



  Die Ausgangsstoffe der Formel     II    können aus       5-(a-Halogenalkanoyl-iminodibenzylen    durch Ring-         schatten,    nämlich     2-tert.        Aminoalkyl-1,2,6,7-tetra-          hydro-indolo[1,7a,        7-a,b]benzo[f]azepine    der Formel         ten,    insbesondere antiallergische und     spasmolytische     Wirksamkeit bei sehr     geringer    sedativer Neben  wirkung,

   besitzen und sich für die     perorale    und       parenterale    Behandlung gewisser Formen von     Geistes-          krankheiten    sowie von Allergien eignen.  



  Man stellt die neuen     Azepinderivate    der Formel  I her, indem man Verbindungen der Formel         schluss    mittels     Aluminiumchlorid    oder gegebenenfalls  aus     SbC13,        Zncl2    oder     BF3    bei Temperaturen zwi  schen 120-200  und Kondensation der erhaltenen       1-Oxo-2-alkyl-1,2,6,7-tetrahydro-indolo[1,7a,    7-a,

  b]-           benzo[fjazepine        mit    Formaldehyd und geeigneten se  kundären Basen oder mit tertiären     Aminoalkylhalo-          geniden    in     Gegenwart    basischer Kondensationsmittel  hergestellt werden.  



  Als     Reduktionsmittel    eignet sich hierbei, wie  schon gesagt, insbesondere     Lithiumaluminium-          hydrid    in     Diäthyläther    oder einem     andern    üblichen  ätherartigen Lösungsmittel, wie z. B.     Tetrahydrofuran.     



  Mit anorganischen oder organischen Säuren, wie       Salzsäure,        Bromwasserstoffsäure,    Schwefelsäure,  Phosphorsäure,     Methansulfonsäure,        Äthandisulfon-          säure,    Essigsäure,     Citronensäure,        Äpfelsäure,    Bern  steinsäure,     Fumarsäure,        Maleinsäure,    Weinsäure,       Benzoesäure    und     Phthalsäure,    bilden die erfindungs  gemäss erhaltenen     tertiären    Basen Salze, welche zum       Teil        wasserlöslich    sind.

    



       In.    den nachfolgenden Beispielen bedeuten Teile  Gewichtsteile; diese verhalten sich zu     Volumteilen     wie g zu     cm3.    Die Temperaturen sind in Celsius  graden angegeben.  



  <I>Beispiel 1</I>  Zu einer siedenden Lösung von 4,3     Teilen        Li-          thiumaluminiumhydrid    in 300     Volumteilen    Äther  tropft man die ätherische Lösung von 18 Teilen       1-Oxo-2-äthyl-2-dimethylaminomethyl-1,2,6,7-tetra-          hydro-indolo[1,7a,        7-a,b]benzo[f]azepin    vom     Smp.     228-230      in    100 Teilen Äther und kocht anschlie  ssend noch 22     Stunden    unter     Rückfluss.    Hierauf  wird das     Reaktionsgemisch    abgekühlt,

   vorsichtig  mit Wasser     versetzt    und die ätherische Schicht ab  gehoben. Der ätherischen Phase werden die basischen  Anteile durch     3maliges    Ausschütteln mit verdünn  ter Essigsäure entzogen. Die vereinigten sauren Aus  züge werden     alkalisch    gestellt und     ausgeäthert.    Durch       Zusatz    von     alkoholischer    Salzsäure zum Ätherextrakt  fällt man das     schwerlösliche    Hydrochlorid des       2-Äthyl-2-dimethylaminomethyl-1,2,6,7-tetra-          hydro-indolo[1,7a,        7-a,b]benzo[f]azepin     vom     Smp.    207-208  aus.  



  In analoger Weise     erhält        man          2-Methyl        2-diäthylaminomethyl-1,2,6,7-tetra-          hydro-indolo[1,7a,        7-a,b]benzo[f]azepin-          hydrochlorid    vom     Smp.    197-200 , und das       2-Äthyl-2-pyrroIidinomethyl-1,2,6,7-tetrahydro-          indolo[1,7a,        7-a,b]benzo[f]azepin-hydro-          chlorid    vom     Smp.    197-198 .

      <I>Beispiel 2</I>  Zu 2 Teilen     Lithiumaluminiumhydrid    in 200     Vo-          lumteilen        abs.    Äther werden bei Siedetemperatur  9 Teile     1-Oxo-2-äthyl-2-dimethylaminoäthyl-1,2,6,7-          tetrahydro-indolo[1,7a,        7-a,b]benzo[f]azepin        zuge-          tropft.    Man erwärmt das Reaktionsgemisch 22 Stun  den zum Sieden unter     Rückfluss.    Nach Aufarbeitung  analog Beispiel 1 erhält man das Hydrochlorid des       2-Äthyl-2-dimethylaminoäthyl-1,2,6,7-tetra-          hydro-indolo[1,7a,

          7-a,b]benzo[f]azepins,          Smp.    206-208  (aus Aceton).



  Process for the preparation of new N-heterocyclic compounds The present invention relates to a process for the preparation of new heterocyclic azepine derivatives with valuable pharmacological properties
EMI0001.0010
    where R is a low molecular weight alkyl radical, Am is a low molecular weight dialkylamino group,

      the alkyl radicals of which can also be linked directly or via an oxygen atom, a low molecular weight alkylimino group or alkanoyloxy-alkylimino group, and n means 1, 2 or 3, which compounds have valuable pharmacological properties
EMI0001.0019
    by means of alkali metal earth metal hydrides, especially lithium aluminum hydride, reduced.



  The starting materials of the formula II can be obtained from 5- (a-haloalkanoyl-iminodibenzylene by ring shadows, namely 2-tert. Aminoalkyl-1,2,6,7-tetrahydro-indolo [1,7a, 7-a, b ] benzo [f] azepines of the formula ten, in particular antiallergic and spasmolytic effectiveness with very low sedative side effects,

   and are suitable for the oral and parenteral treatment of certain forms of mental illnesses and allergies.



  The new azepine derivatives of the formula I are prepared by connecting compounds of the formula by means of aluminum chloride or optionally from SbC13, ZnCl2 or BF3 at temperatures between 120-200 and condensation of the 1-oxo-2-alkyl-1,2,6 obtained , 7-tetrahydro-indolo [1,7a, 7-a,

  b] - benzo [fjazepine with formaldehyde and suitable secondary bases or with tertiary aminoalkyl halides in the presence of basic condensing agents.



  As already mentioned, a particularly suitable reducing agent is lithium aluminum hydride in diethyl ether or another conventional ethereal solvent, such as. B. tetrahydrofuran.



  With inorganic or organic acids, such as hydrochloric acid, hydrobromic acid, sulfuric acid, phosphoric acid, methanesulfonic acid, ethanedisulfonic acid, acetic acid, citric acid, malic acid, succinic acid, fumaric acid, maleic acid, tartaric acid, benzoic acid and phthalic acid, the tertiary bases obtained according to the invention form salts are partly water-soluble.

    



       In. in the following examples, parts are parts by weight; these are related to parts of volume as g to cm3. The temperatures are given in degrees Celsius.



  <I> Example 1 </I> The ethereal solution of 18 parts 1-oxo-2-ethyl-2-dimethylaminomethyl-1,2,6 is added dropwise to a boiling solution of 4.3 parts of lithium aluminum hydride in 300 parts by volume of ether , 7-tetrahydro-indolo [1,7a, 7-a, b] benzo [f] azepine of melting point 228-230 in 100 parts of ether and then refluxed for a further 22 hours. The reaction mixture is then cooled,

   Carefully mixed with water and lifted off the essential layer. The basic components are removed from the ethereal phase by shaking three times with dilute acetic acid. The combined acidic extracts are made alkaline and extracted with ether. By adding alcoholic hydrochloric acid to the ether extract, the sparingly soluble hydrochloride of 2-ethyl-2-dimethylaminomethyl-1,2,6,7-tetrahydro-indolo [1,7a, 7-a, b] benzo [f] azepine is precipitated from m.p. 207-208.



  In an analogous manner, 2-methyl-2-diethylaminomethyl-1,2,6,7-tetrahydro-indolo [1,7a, 7-a, b] benzo [f] azepine hydrochloride of melting point 197-200 is obtained, and 2-ethyl-2-pyrrolidinomethyl-1,2,6,7-tetrahydroindolo [1,7a, 7-a, b] benzo [f] azepine hydrochloride of m.p. 197-198.

      <I> Example 2 </I> To 2 parts of lithium aluminum hydride in 200 parts by volume of abs. 9 parts of 1-oxo-2-ethyl-2-dimethylaminoethyl-1,2,6,7-tetrahydro-indolo [1,7a, 7-a, b] benzo [f] azepine are added dropwise to ether at boiling point. The reaction mixture is heated to reflux for 22 hours. After working up as in Example 1, the hydrochloride of 2-ethyl-2-dimethylaminoethyl-1,2,6,7-tetrahydro-indolo [1,7a,

          7-a, b] benzo [f] azepins, m.p. 206-208 (from acetone).

 

Claims (1)

PATENTANSPRUCH Verfahren zur Herstellung von neuen tetracycli- schen Azepinderivaten der Formel EMI0002.0082 worin R einen niedermolekularen Alkylrest, Am eine niedermolekulare Dialkylaminogruppe, deren Alkyl- reste auch unter sich direkt oder über ein Sauer stoffatom, eine niedermolekulare Alkyliminogruppe oder Alkanoyloxy-alkyliminogruppe verbunden sein können, und n 1, 2 oder 3 bedeuten, dadurch ge kennzeichnet, PATENT CLAIM Process for the production of new tetracyclic azepine derivatives of the formula EMI0002.0082 where R is a low molecular weight alkyl group, Am is a low molecular weight dialkylamino group, the alkyl groups of which can also be linked directly or via an oxygen atom, a low molecular weight alkylimino group or alkanoyloxyalkylimino group, and n is 1, 2 or 3, characterized in that dass man eine Verbindung der Formel EMI0002.0091 mittels eines Alkalimetall-Erdmetallhydrids reduziert. that you can get a compound of the formula EMI0002.0091 reduced by means of an alkali metal-earth metal hydride.
CH1041563A 1959-03-26 1959-03-26 Process for the preparation of new N-heterocyclic compounds CH371803A (en)

Priority Applications (1)

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CH1041563A CH371803A (en) 1959-03-26 1959-03-26 Process for the preparation of new N-heterocyclic compounds

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Application Number Priority Date Filing Date Title
CH1041563A CH371803A (en) 1959-03-26 1959-03-26 Process for the preparation of new N-heterocyclic compounds

Publications (1)

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CH371803A true CH371803A (en) 1963-09-15

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