CH118177A - Process for the preparation of an α-aminoalkyl derivative of menthone. - Google Patents

Process for the preparation of an α-aminoalkyl derivative of menthone.

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Publication number
CH118177A
CH118177A CH118177DA CH118177A CH 118177 A CH118177 A CH 118177A CH 118177D A CH118177D A CH 118177DA CH 118177 A CH118177 A CH 118177A
Authority
CH
Switzerland
Prior art keywords
water
soluble
preparation
menthone
aminoalkyl derivative
Prior art date
Application number
Other languages
German (de)
Inventor
Rupe Hans Dr Prof
Original Assignee
Rupe Hans Dr Prof
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 Rupe Hans Dr Prof filed Critical Rupe Hans Dr Prof
Publication of CH118177A publication Critical patent/CH118177A/en

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Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C49/00Ketones; Ketenes; Dimeric ketenes; Ketonic chelates
    • C07C49/385Saturated compounds containing a keto group being part of a ring
    • C07C49/403Saturated compounds containing a keto group being part of a ring of a six-membered ring
    • C07C49/407Menthones

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

  

      Verfahreir    zur     Darstellnirg    eines     o)-Aininoalliylderivates    des     1Vlentlions.       Es wurde 'gefunden, dass man zu einem       (,)-Aminornetliylderivat    des     Menthons    gelan  gen     kann,    indem man     a-Cyanrnentlion    kata  lytisch reduziert und das hierbei gebildete  Zwischenprodukt     hydrolysiert.     



  Reduziert     rnan        u-Cyanmenthon    katalytisch,       zum    Beispiel in Gegenwart von     feinverteiltern     Nickel, so bildet sich als     Zwischenprodukt     eine Base, die zum Beispiel durch     Kochen          rnit        verdünnter    Säure in     Oxymethylenmen-          thon    und     Menthomethylamin    gespalten wird.  
EMI0001.0021     
    Das     Monthornethylamin    stellt eine starke  Base dar.  



  Es lässt sich in wasserlösliche Salze Über  führen. Die freie Base bildet ein in allen  organischen Lösungsmitteln leicht, in Wasser  schwer lösliches farbloses- Öl, welches unter  10 mm     Druck    bei 126 -128   destilliert. Das       #    Chlorhydrat bildet farblose Kristalle vom       Smp.    205  , welche in Wasser leicht löslich  sind.    Die neue Verbindung soll zu therapeuti  schen     Zwecken'Verwendung        finden.     



  <I>Beispiel</I>  25 Gewichtsteile     Cyanmenthon    gelbliches  Öl vom     Sdp.    162-164  bei 11 mm     Druck;     erhalten     aus    dein in     Anrr.    281, B. 395 be  schriebenen     Oxymethylenmenthon    durch       Überführung    in dessen     Isoxazolderivat        (Sdp.     136-137   bei 11 mm) nach der Methode  von     Auwers,    Bahr und Fiese,     Ann.    441, S.

   54  und Behandlung der ätherischen Lösung des  letzteren mit einer Lösung von Natrium in  Äthylalkohol, nach dein ebendort beschrie  benen Verfahren] werden in einer Mischung  von 500     Volumteilen    Alkohol und 250     Volum-          teilen    Wasser     #    gelöst, mit 120 Gewichts  teilen Nickelkatalysator (erhalten nach     Helv.          Chim.    Acta,     Bd.        1.,    S. 453 ff) geschüttelt.

    Nach Aufnahme der berechneten Menge       Wasserstoff    (3 Ha auf 2     Mol.        Cyanmenthon)     wird vom     Nickelkatalysator        abfiltriert    und  das Filtrat der     Wasserdanipfdestillation    un  terworfen.  



  Das im Rückstand verbleibende Öl wird  mit wässeriger Salzsäure erhitzt.     Hierbei         tritt Spaltung in     Oxyrnethylenmentlion    und       llerlthomethy        laminchlorhydrat    ein.  



  Zwecks Entfernung des abgespaltenen       Oxy        methylenmenthons    wird die salzsaure  Lösung mit Äther geschüttelt. Hierbei geht  das     Oxymethylenmentlion    in die     ätlierisclle          Lösung    über. Nach Abtrennung der Äther  schicht wird die     wässerigsaure    Lösung ein  gedampft, wobei in guter Ausbeute das Chlor  hydrate des     a-Menthomethylamins    erhalten  wird, welches aus salzsaurem Wasser um  kristallisiert und durch Ausfällen der wässe  rigen Lösung mit Natronlauge in die freie       Base    übergeführt werden kann.



      Proceed to the representation of an o) -Aininoalliylderivates of 1Ventlion. It has been found that a (,) - Aminornetliylderivat of menthone can be obtained by catalytically reducing α-cyanogen chloride and hydrolyzing the intermediate product formed in this way.



  If u-cyanionhone is reduced catalytically, for example in the presence of finely divided nickel, a base is formed as an intermediate product, which is broken down, for example, by boiling with dilute acid into oxymethylenemethone and menthomethylamine.
EMI0001.0021
    Monthornethylamine is a strong base.



  It can be converted into water-soluble salts. The free base forms a colorless oil which is easily soluble in all organic solvents and sparingly soluble in water, which distills at 126-128 under 10 mm pressure. The # hydrochloride forms colorless crystals with a melting point of 205, which are easily soluble in water. The new compound is intended to be used for therapeutic purposes.



  <I> Example </I> 25 parts by weight of cyanite yellowish oil with a bp 162-164 at 11 mm pressure; received from your in Anrr. 281, B. 395 be written oxymethylene menthone by conversion into its isoxazole derivative (bp. 136-137 at 11 mm) by the method of Auwers, Bahr and Fiese, Ann. 441, p.

   54 and treatment of the ethereal solution of the latter with a solution of sodium in ethyl alcohol, according to the process described there] are dissolved in a mixture of 500 parts by volume of alcohol and 250 parts by volume of water, with 120 parts by weight of a nickel catalyst (obtained from Helv. Chim. Acta, vol. 1., p. 453 ff) shaken.

    After the calculated amount of hydrogen (3 ha per 2 mol. Cyanogen chloride) has been taken up, the nickel catalyst is filtered off and the filtrate is subjected to water distillation.



  The oil remaining in the residue is heated with aqueous hydrochloric acid. In this process, cleavage occurs into oxyethylene methylene chloride and thomethylamine chlorohydrate.



  To remove the split off oxy methylenmenthons, the hydrochloric acid solution is shaken with ether. Here the oxymethylene ion goes over into the ätlierisclle solution. After separation of the ether layer, the aqueous acidic solution is evaporated, the chlorohydrate of a-menthomethylamine being obtained in good yield, which crystallizes from hydrochloric acid and can be converted into the free base by precipitating the aqueous solution with sodium hydroxide solution.

 

Claims (1)

<B>PATENTANSPRUCH</B> Verfahren zur Darstellung eines co-Amino- inethylderivates des iHenthons, dadurch ge- kennzeichnet, dass man a-Cyaninenthon kata lytisch reduziert und das hierbei gebildete Zwischenprodukt hydi-olysiert. Das so erhaltene a-1lfenthomethylamin stellt eine starke Base dar. Es lä,sst sich in wasserlösliche Salze überführen. <B> PATENT CLAIM </B> Process for the preparation of a co-aminoethyl derivative of iHenthone, characterized in that α-cyanine thon is catalytically reduced and the intermediate product formed is hydrolyzed. The α-1lfenthomethylamine thus obtained is a strong base. It can be converted into water-soluble salts. Die freie Base bildet ein in aller) organischen Lösungs mitteln leicht, in Wasser schwer lösliches farbloses<B>01,</B> welches unter 10 nim Druck bei 126-12811 destilliert. Das Chlorhydrat bildet farblose Kristalle von Snip. 20:5 , welche in Wasser leicht löslich sind. Die neue Verbindung soll zu therapeuti schen Zwecken Verwendung finden. The free base forms a colorless oil which is readily soluble in water and which is poorly soluble in water and which distills under pressure at 126-12811. The chlorine hydrate forms colorless crystals of Snip. 20: 5, which are easily soluble in water. The new connection is intended to be used for therapeutic purposes.
CH118177D 1924-10-01 1924-10-01 Process for the preparation of an α-aminoalkyl derivative of menthone. CH118177A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH118177T 1924-10-01
CH114185T 1924-10-01

Publications (1)

Publication Number Publication Date
CH118177A true CH118177A (en) 1926-12-16

Family

ID=25708285

Family Applications (1)

Application Number Title Priority Date Filing Date
CH118177D CH118177A (en) 1924-10-01 1924-10-01 Process for the preparation of an α-aminoalkyl derivative of menthone.

Country Status (1)

Country Link
CH (1) CH118177A (en)

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