CH299937A - Process for the preparation of a 6,7-dihydro-5H-dibenz (c, e) azepine. - Google Patents

Process for the preparation of a 6,7-dihydro-5H-dibenz (c, e) azepine.

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Publication number
CH299937A
CH299937A CH299937DA CH299937A CH 299937 A CH299937 A CH 299937A CH 299937D A CH299937D A CH 299937DA CH 299937 A CH299937 A CH 299937A
Authority
CH
Switzerland
Prior art keywords
dihydro
dibenz
azepine
preparation
amines
Prior art date
Application number
Other languages
German (de)
Inventor
F Hoffmann- Aktiengesellschaft
Original Assignee
Hoffmann La Roche
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 Hoffmann La Roche filed Critical Hoffmann La Roche
Publication of CH299937A publication Critical patent/CH299937A/en

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Description

  

  Verfahren zur Herstellung eines     6,7-Dihydro-5H-dibenz[c,e]azepins.       Die vorliegende Erfindung betrifft die  Herstellung von     6,7-Dihydro-51-I-dibenz[e,el-          azepin    und seinen Derivaten. Diese neuen  Verbindungen sind therapeutisch verwendbar.  Vor allem besitzen sie     adrenolytische    Eigen  schaften, die die physiologische Wirkung des       Epinephrins    hemmen oder -umkehren.  



  Gemäss der vorliegenden Erfindung wer  den die erwähnten Verbindungen durch Um  setzung des     o,o'-bis-(Brommethyl)-biphenyls     mit Ammoniak oder einem primären oder  sekundären Amin hergestellt.  



  Geeignete primäre Amine sind     z-Lun    Bei  spiel die gesättigten oder ungesättigten     Alkyl-          amine,    die     Arylamine,    die     Cycloalkylamine,     die     Aralkylamine,    die     Oxyalkylamine,    oder  die     Dialk-ylaminoalk.vlamine.    Diese primären  Amine führen zur Bildung der in     6-Stellung     mit dem entsprechenden Radikal substituier  ten     6,7-Dihvdro-5H-dibenz[e,e]azepine.    Die  gebildeten Produkte können ihrerseits mit         Sä,

  uren    in ihre Salze oder mit     quaternisieren-          den    Mitteln in ihre     quaternären    Salze umge  wandelt werden.  



  Wenn man als Ausgangsmaterial ein se  kundäres Amin verwendet, erhält man die  entsprechenden     quaternären    Salze des     6,7-Di-          hydro-5H-diben7,[c,el        azepins.     



  Das     o,o'-bis-        (Brommethyl)        -biphenyl    ist  eine bekannte Verbindung, die von Kenner  und Mitarbeitern im      Journal        of        Chemical          Soeiety ,    London, Band<B>99 [19111,</B> Seite 2108,  beschrieben worden ist.  



  Gegenstand des vorliegenden Patentes ist  nun ein Verfahren zur Herstellung von     6-          Äthyl-6,7-dihydro-5H-dibenz[e,e]azepin,    das       dadurell    gekennzeichnet ist,     dass    man     0,o-bis-          (Brommethyl)-biphenyl    mit     Äthylamin    rea  gieren     lässt.     



  Die Reaktion erfolgt nach folgendem  Schema:  
EMI0001.0040     
    <I>Beispiel:</I>    <B>10</B>     oo'-bis-(Brommeth.v1)-biphenyl    wer  den in<B>1.00</B>     em3    Benzol gelöst. 40<B>g</B> einer Lö  sung von 12<B>g</B>     Äthylamin    in<B>100</B>     em3    Benzol       C,       werden bei     2011   <B>C</B> zugefügt. Die     Misehung     wird 24 Stunden     stehengelassen        -and    filtriert..  Das Filtrat wird mit Wasser gewaschen     und         dann mit verdünnter Salzsäure extrahiert.

    Der Säureextrakt wird mit konzentriertem  Ammoniak alkalisch gestellt und die freie  Base mit Äther ausgezogen.  



  Zwecks Herstellung des     Hydrobromids     kann der     ätherisehe    Extrakt getrocknet, mit  alkoholischer     Bromwasserstoffsäure    versetzt,  das ausfallende Material filtriert und aus     Al-          koliol    umkristallisiert werden. Die erhaltene  Substanz stellt das 6-Äthyl-6,7-dihydro-5H-di-         benz[e,e]azepin-hydrobroniid    dar und hat  einen Schmelzpunkt von ungefähr<B>'203</B> bis       204o   <B>C.</B>



  Process for the preparation of a 6,7-dihydro-5H-dibenz [c, e] azepine. The present invention relates to the preparation of 6,7-dihydro-51-I-dibenz [e, elazepine and its derivatives. These new compounds are therapeutically useful. Above all, they have adrenolytic properties that inhibit or reverse the physiological effects of epinephrine.



  According to the present invention, the compounds mentioned are prepared by reacting the o, o'-bis (bromomethyl) biphenyl with ammonia or a primary or secondary amine.



  Suitable primary amines are z-Lun, for example, the saturated or unsaturated alkyl amines, the aryl amines, the cycloalkyl amines, the aralkyl amines, the oxyalkyl amines, or the dialk-ylaminoalk.vlamines. These primary amines lead to the formation of the 6,7-Dihvdro-5H-dibenz [e, e] azepines which are substituted in the 6-position with the corresponding radical. The formed products can in turn with Sä,

  acids are converted into their salts or with quaternizing agents into their quaternary salts.



  If a secondary amine is used as the starting material, the corresponding quaternary salts of 6,7-dihydro-5H-diben7, [c, el azepines are obtained.



  The o, o'-bis (bromomethyl) biphenyl is a known compound which has been described by Kenner and coworkers in the Journal of Chemical Soeiety, London, volume 99 [19111, page 2108].



  The present patent now relates to a process for the preparation of 6-ethyl-6,7-dihydro-5H-dibenz [e, e] azepine, which is characterized by the fact that 0, o-bis (bromomethyl) biphenyl is used with Ethylamine can react.



  The reaction takes place according to the following scheme:
EMI0001.0040
    <I> Example: </I> <B> 10 </B> oo'-bis- (bromometh.v1) -biphenyl are dissolved in <B> 1.00 </B> em3 benzene. 40 <B> g </B> of a solution of 12 <B> g </B> ethylamine in <B> 100 </B> em3 benzene C are added in 2011 <B> C </B>. The mixture is left to stand for 24 hours and filtered. The filtrate is washed with water and then extracted with dilute hydrochloric acid.

    The acid extract is made alkaline with concentrated ammonia and the free base is extracted with ether.



  For the production of the hydrobromide, the ethereal extract can be dried, mixed with alcoholic hydrobromic acid, the precipitated material filtered and recrystallized from alkoliol. The substance obtained is 6-ethyl-6,7-dihydro-5H-dibenz [e, e] azepine hydrobronide and has a melting point of approximately 203 to 204 ° C . </B>

 

Claims (1)

<B>PATENTANSPRUCH:</B> Verfahren zur Herstellung von 6-Äth-yl- 6,7-dihydro-5H-diberi7, [e,e] azepin, dadurch ge kennzeichnet, dass man o,o'-bis-(Brommethvl)- bipbenyl mit Ätkylamin reagieren Igsst. Die neue Verbindung bildet ein Hydrobro- mid, das bei 203-2040 schmilzt. <B> PATENT CLAIM: </B> Process for the preparation of 6-eth-yl-6,7-dihydro-5H-diberi7, [e, e] azepine, characterized in that o, o'-bis- ( Brommethvl) - bipbenyl react with ethylamine Igsst. The new compound forms a hydrobromide that melts at 203-2040.
CH299937D 1950-04-21 1951-04-13 Process for the preparation of a 6,7-dihydro-5H-dibenz (c, e) azepine. CH299937A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US299937XA 1950-04-21 1950-04-21
CH297189T 1951-04-13

Publications (1)

Publication Number Publication Date
CH299937A true CH299937A (en) 1954-06-30

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Application Number Title Priority Date Filing Date
CH299937D CH299937A (en) 1950-04-21 1951-04-13 Process for the preparation of a 6,7-dihydro-5H-dibenz (c, e) azepine.

Country Status (1)

Country Link
CH (1) CH299937A (en)

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