CH224315A - Process for producing an anesthetic compound. - Google Patents

Process for producing an anesthetic compound.

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Publication number
CH224315A
CH224315A CH224315DA CH224315A CH 224315 A CH224315 A CH 224315A CH 224315D A CH224315D A CH 224315DA CH 224315 A CH224315 A CH 224315A
Authority
CH
Switzerland
Prior art keywords
producing
anesthetic compound
compound
anesthetic
dimethylamine
Prior art date
Application number
Other languages
German (de)
Inventor
Albert Chemische Werke
Original Assignee
Albert Ag Chem Werke
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 Albert Ag Chem Werke filed Critical Albert Ag Chem Werke
Publication of CH224315A publication Critical patent/CH224315A/en

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  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

  

  Verfahren zur Herstellung einer     anästhetiseh    wirkenden Verbindung.    Es wurde gefunden, dass Verbindungen  der allgemeinen Formel  
EMI0001.0002     
    wobei R Wasserstoff oder     Alkyl    ist, aus  gezeichnete     anästhetische    Eigenschaften be  sitzen. Einer therapeutischen Anwendung  steht allerdings eine starke Reizwirkung bei  der Applikation entgegen,     die    bis zur Ne  krosebildung führt.

   Es wurde nun über  raschenderweise     gefunden,    dass man zu auch  in höheren Konzentrationen reizlos     applizier-          baren    Verbindungen gelangt, wenn man die  oben erwähnte Körperklasse am Stickstoff  mit zwei     Methylresten    substituiert.  



  Um zu diesen noch nicht     vorbeschriebenen     Verbindungen zu gelangen, kann man z. B.  den entsprechenden Aldehyd, z. B.     Diphenyl-          ace;^ldehyd,    in Gegenwart von 1     Mol    Di-         methylamin    in an sich bekannter Weise einer  Reduktion unterwerfen, wobei eine Isolierung  der     als        Zwischenprodukte    entstehenden Al  dehydaminverbindung nicht nötig ist.  



  Gegenstand des vorliegenden Patentes ist  ein Verfahren zur Herstellung von     Diphenyl-          äthyldimethylamin,    welches dadurch ge  kennzeichnet ist, dass man. auf     Diphenyl-          acetaIdehyd        Dimethylamin        einwirken        lässt     und die so erhaltene     Aldehydammoniakver-          bindung    reduziert.  



  Das Chlorhydrat des so erhaltenen     Di-          phenyläthyldimethylamins    besteht aus zu  gespitzten,     weissen    Prismen, die bei 202'  schmelzen.  



  <I>Beispiel,:</I>  39,2 g     Diphenylacetaldehyd    werden in  100 cm' absolutem Alkohol gelöst     und    mit  100     cm@    alkoholischer     Dimethylaminlösung     von 10     Vol.-    %     (-    10 g     statt    9 g     berechnet)     unter Kühlung versetzt. Es scheidet     ,sich     unter Erwärmung ein fester, weisser Nieder  schlag der entsprechendenAldehydammoniak-           verbindung    ab. Nach Zugabe von weiteren  zirka 100 cm' absolutem Alkohol     reduziert     man in der Siedehitze mit 25 g Natrium in  Stücken.

   Aus der reduzierten Lösung bläst  man mit     Wasserdampf    den Alkohol rasch ab  und nimmt das auf der Natronlauge schwim  mende<B>01</B> in Äther auf. Durch Versetzen der  mit     Pottasche    getrockneten Ätherlösung mit       HCl    wird das Chlorhydrat der gewünschten  Base erhalten, das zweckmässig aus Methanol,  eventuell unter Zusatz von wenig Äther,     um-          kristallisiert    wird.  



  Das Chlorhydrat     besteht    aus weissen, zu  gespitzten Prismen, die bei 202'     schmelzen:     Man kann auch die oben erhaltene Al  dehydaminverbindung nach der Isolierung in  Alkohol lösen und mit einem Palladium- oder  Platinkatalysator,     zweckmässigerweise    mit    einem Überdruck von 2 bis 3 atü,' mit     Wasser-          stoff        katalytisch        hydrieren.    Die Aufarbei  tung kann darauf wie oben beschrieben er  folzen.



  Method of making an anesthetic compound. It was found that compounds of the general formula
EMI0001.0002
    where R is hydrogen or alkyl, have excellent anesthetic properties. A therapeutic application is opposed, however, by a strong irritant effect during application, which leads to the formation of necrosis.

   It has now surprisingly been found that compounds which can be applied without irritation even in higher concentrations can be obtained if the abovementioned body class is substituted on nitrogen with two methyl radicals.



  To get to these not yet described compounds, you can z. B. the corresponding aldehyde, e.g. B. Diphenyl ace; ^ ldehyde, in the presence of 1 mole of dimethylamine subject to a reduction in a manner known per se, isolation of the aldehyde amine compound formed as intermediate products is not necessary.



  The subject of the present patent is a process for the preparation of diphenyl ethyldimethylamine, which is characterized in that one. lets dimethylamine act on diphenyl acetaldehyde and reduces the aldehyde ammonia compound thus obtained.



  The chlorohydrate of the diphenylethyldimethylamine thus obtained consists of pointed, white prisms which melt at 202 '.



  <I> Example: </I> 39.2 g of diphenylacetaldehyde are dissolved in 100 cm 'absolute alcohol and mixed with 100 cm @ alcoholic dimethylamine solution of 10% by volume (- 10 g instead of 9 g calculated) while cooling. A solid, white precipitate of the corresponding aldehyde ammonia compound is deposited when heated. After adding another 100 cm 'of absolute alcohol, it is reduced in pieces at the boiling point with 25 g of sodium.

   The alcohol is quickly blown off the reduced solution with steam and the <B> 01 </B> floating on the caustic soda is absorbed in ether. By adding HCl to the ether solution dried with potash, the hydrochloride of the desired base is obtained, which is expediently recrystallized from methanol, possibly with the addition of a little ether.



  The chlorohydrate consists of white, pointed prisms that melt at 202 ': You can also dissolve the aldehyde amine compound obtained above in alcohol after isolation and use a palladium or platinum catalyst, conveniently with an overpressure of 2 to 3 atmospheres Catalytically hydrogenate hydrogen. It can then be processed as described above.

 

Claims (1)

PATENTAN SPRUCH Verfahren zur Herstellung einer reizlos applizierbaren, anästhetisch wirkenden Ver bindung, dadurch gekennzeichnet, PATENT A PROCEDURE for the production of an irritant-free, anesthetic compound, characterized in that dass man auf Diphenylacetaldehyd Dimethylamin ein wirken lässt und die so erhaltene Aldehyd- aminverbindung reduziert. Das Chlorhydrat des so erhaltenen Di- phenyläthyldimethylamins besteht aus zu gespitzten, weissen Prismen, die bei 202" schmelzen. that dimethylamine is allowed to act on diphenylacetaldehyde and the aldehyde amine compound thus obtained is reduced. The hydrochloride of the diphenylethyldimethylamine obtained in this way consists of pointed, white prisms which melt at 202 ".
CH224315D 1940-10-24 1941-09-09 Process for producing an anesthetic compound. CH224315A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE224315X 1940-10-24

Publications (1)

Publication Number Publication Date
CH224315A true CH224315A (en) 1942-11-15

Family

ID=5855285

Family Applications (1)

Application Number Title Priority Date Filing Date
CH224315D CH224315A (en) 1940-10-24 1941-09-09 Process for producing an anesthetic compound.

Country Status (1)

Country Link
CH (1) CH224315A (en)

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