CH122522A - Process for the preparation of an aralkylamine. - Google Patents

Process for the preparation of an aralkylamine.

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Publication number
CH122522A
CH122522A CH122522DA CH122522A CH 122522 A CH122522 A CH 122522A CH 122522D A CH122522D A CH 122522DA CH 122522 A CH122522 A CH 122522A
Authority
CH
Switzerland
Prior art keywords
nitro
preparation
methylbenzene
parts
aralkylamine
Prior art date
Application number
Other languages
German (de)
Inventor
Aktiengesellsc Farbenindustrie
Original Assignee
Ig Farbenindustrie Ag
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 Ig Farbenindustrie Ag filed Critical Ig Farbenindustrie Ag
Publication of CH122522A publication Critical patent/CH122522A/en

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

Description

  

      Verfahren    zur     Darstellung    eines     Aralkylamins.       Es wurde gefunden, dass man nach dem  im Hauptpatent beschriebenen Verfahren     3-          Nitro-4-methylbenzylamin    herstellen kann,  wenn man an Stelle des dort verwendeten  Benzols 2 -     Nitro    -1-     methylbenzol    verwendet.

         Beispiel     411 Teile     2-Nitro-l-methylbeiizol    werden  mit 195 Teilen     oo-Chlormethylphtalimid    und  10 Teilen Chlorzink, das als Katalysator  dient, versetzt und unter Rühren auf 120  bis 130 o C erhitzt, wobei wie ersichtlich,  das     2-Nitro-l-methylbenzol,    das gleichzeitig  Lösungsmittel ist, im Überschuss vorhanden  ist. Das so gewonnene Kondensationsprodukt  wird durch     Umkristallisieren    aus Alkohol ge  reinigt. 100 Teile davon werden . mit 80  Teilen 35     o/oiger        Natriumhydro$ydlösung,    300  Teilen Wasser und 300 Teilen Alkohol in  der     gälte    gerührt.

   Dann wird mit 150 Teilen  25     o/oiger    Salzsäure angesäuert, der Alkohol  verjagt und zur klaren Lösung aufgearbeitet.  Man erhält so das 3-Nitro-4-methylbenzyl-         aminchlorhydrat    und durch Zusatz von Na  triumhydrogyd und     Ausäthern    das     3-Nitro-          4-methylbenzylamin,    das durch Destillation  im Vakuum gereinigt werden kann.  



  Das erhaltene, an sich bekannte Produkt  soll als Zwischenprodukt bei der Darstellung  technisch wichtiger Stoffe, z. B.     Riechstoffe     und Heilmittel, Verwendung finden.



      Process for the preparation of an aralkylamine. It has been found that 3-nitro-4-methylbenzylamine can be prepared by the process described in the main patent if 2-nitro-1-methylbenzene is used instead of the benzene used there.

         EXAMPLE 411 parts of 2-nitro-1-methylbeiizole are mixed with 195 parts of oo-chloromethylphthalimide and 10 parts of zinc chloride, which serves as a catalyst, and the mixture is heated to 120 to 130 o C with stirring, the 2-nitro-l- methylbenzene, which is also a solvent, is present in excess. The condensation product obtained in this way is purified by recrystallization from alcohol. 100 parts of it will be. stirred with 80 parts of 35% sodium hydroxide solution, 300 parts of water and 300 parts of alcohol in the cold.

   It is then acidified with 150 parts of 25% hydrochloric acid, the alcohol is driven off and worked up to give a clear solution. This gives the 3-nitro-4-methylbenzyl amine chlorohydrate and, by adding sodium hydroxide and ether, the 3-nitro-4-methylbenzylamine, which can be purified by distillation in vacuo.



  The product obtained, known per se, should be used as an intermediate product in the preparation of technically important substances, e.g. B. Fragrances and remedies are used.

 

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung von 3 - Nitro - 4-methylbenzylamin, dadurch gekennzeichnet, dass man auf 2-Nitro-l-methylbenzol ce-Ha- logenmethylphtalimid einwirken lässt und das so entstandene Kondensationsprodukt spaltet. UNTERANSPRüCHE : 1. Verfahren nach Patentanspruch, dadurch . gekennzeichnet, dass man das 2 - Nitro -1- metbylbenzol und das o)-Halogenmethyl- phtalimid in Gegenwart eines Katalysators aufeinander einwirken lässt. PATENT CLAIM: A process for the preparation of 3-nitro-4-methylbenzylamine, characterized in that ce-halomethylphthalimide is allowed to act on 2-nitro-1-methylbenzene and the condensation product thus formed is cleaved. SUBCLAIMS: 1. Method according to claim, thereby. characterized in that the 2 - nitro -1-methylbenzene and the o) -halomethyl phthalimide are allowed to act on one another in the presence of a catalyst. 2. Verfahren nach Patentanspruch, dadurch gekennzeichnet, dass man das 2-Nitro-l- methvIbenzol im LTberschuss anwendet, wobei es zugleich die Rolle eines Msungs- mittels spielt. 3. Verfahren nach Patentanspruch, dadurch gekennzeichnet, dass man die Spaltung des Kondensationsproduktes durch aufein- anderfolgende Behandlung mit Alkalien und Säuren herbeiführt. 2. The method according to claim, characterized in that the 2-nitro-1-methoxybenzene is used in excess, it at the same time playing the role of a measuring agent. 3. The method according to claim, characterized in that the cleavage of the condensation product is brought about by successive treatment with alkalis and acids.
CH122522D 1925-03-30 1926-03-23 Process for the preparation of an aralkylamine. CH122522A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE122522X 1925-03-30
CH120519T 1926-03-23

Publications (1)

Publication Number Publication Date
CH122522A true CH122522A (en) 1927-09-16

Family

ID=25709457

Family Applications (1)

Application Number Title Priority Date Filing Date
CH122522D CH122522A (en) 1925-03-30 1926-03-23 Process for the preparation of an aralkylamine.

Country Status (1)

Country Link
CH (1) CH122522A (en)

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