CH138196A - Process for the preparation of a condensation product from cyclohexanone. - Google Patents

Process for the preparation of a condensation product from cyclohexanone.

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Publication number
CH138196A
CH138196A CH138196DA CH138196A CH 138196 A CH138196 A CH 138196A CH 138196D A CH138196D A CH 138196DA CH 138196 A CH138196 A CH 138196A
Authority
CH
Switzerland
Prior art keywords
condensation product
preparation
cyclohexanone
trinuclear
new
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 CH138196A publication Critical patent/CH138196A/en

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

Description

  

  Verfahren zur Darstellung eines Kondensationsproduktes aus     Cykloheganon.       Im Hauptpatent ist ein Verfahren zur Dar  stellung von     Kondensationsprodukten    durch  Erhitzen von primären, sekundären und       tertiären    aromatischen Basen mit freier p  Stellung zur     Aminogruppe    mit     hydroaroma-          tischen        R.ingketonen    in     Gegenwart    von sau  ren Kondensationsmitteln beschrieben.  



  Vorliegendes Patent bezieht sich nun auf  ein Verfahren zur Darstellung eines neuen       Kondensationsproduktes    der Formel:  
EMI0001.0010     
    dadurch gekennzeichnet, dass man     Dimethyl-          anilin    mit     Cyklohexanon    in Gegenwart eines       sauren    Kondensationsmittels auf höhere Tem-         peratur    erhitzt und aus dem Reaktions  gemisch die dreikernige Verbindung isoliert.  



  Das neue dreikernige     Kondensationspro-          dukt    kristallisiert aus     Benzol    oder Benzin  in derben farblosen     Nadeln    vom Schmelz  punkt 158-160      (Erweichen    bei 150-152 ).  Es ist     leieht    löslich in Mineralsäuren und       läBt    sich daraus durch Alkali in kristallisier  ter Form ausfällen. Es soll als     Zwischen-          produkt    zur     Herstellung    von Farbstoffen  dienen.  



  <I>Beispiel</I>  Man erhitzt eine Lösung von 240 Teilen       Cyklohexanon    und 800 Teilen     Dimethylanilin     in 700 Teilen Salzsäure (d = 1,18) und 1700  Teilen Wasser in einem     Autoklaven    etwa  sechs Stunden auf ungefähr<B>160'.</B> Aus der       Mischung    lassen sich leicht die beiden ent  stehenden Kondensationsprodukte     isolieren.          cla    die     zweikernige    Verbindung in organi  schen     Lösungsmitteln,    zum Beispiel Äther,      leicht löslich, die dreikernige nahezu unlös  lich     ist.  



  Process for the preparation of a condensation product from cycloheganone. The main patent describes a process for the preparation of condensation products by heating primary, secondary and tertiary aromatic bases with a free p position to the amino group with hydroaromatic ring ketones in the presence of acidic condensation agents.



  The present patent relates to a process for the preparation of a new condensation product of the formula:
EMI0001.0010
    characterized in that dimethylaniline is heated to a higher temperature with cyclohexanone in the presence of an acidic condensing agent and the trinuclear compound is isolated from the reaction mixture.



  The new trinuclear condensation product crystallizes from benzene or gasoline in coarse, colorless needles with a melting point of 158-160 (softening at 150-152). It is slightly soluble in mineral acids and can be precipitated in crystallized form by alkali. It is intended to serve as an intermediate product in the manufacture of dyes.



  <I> Example </I> A solution of 240 parts of cyclohexanone and 800 parts of dimethylaniline in 700 parts of hydrochloric acid (d = 1.18) and 1700 parts of water is heated in an autoclave to about 160 ° for about six hours / B> The two resulting condensation products can easily be isolated from the mixture. cla the binuclear compound is easily soluble in organic solvents such as ether, the trinuclear compound is almost insoluble.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines neuen Kondensationsproduktes der Formel: EMI0002.0003 dadurch gekennzeichnet, dass man Dimethyl- anilin mit Cylilohexanon in Gegenwart eines sauren Kondensationsmittels auf höhere Tem peraturen erhitzt und aus dem Reaktions- gemisch die dreikernige Verbindung isoliert. PATENT CLAIM: Process for the preparation of a new condensation product of the formula: EMI0002.0003 characterized in that dimethylaniline is heated to higher temperatures with cyclohexanone in the presence of an acidic condensing agent and the trinuclear compound is isolated from the reaction mixture. Das neue dreikernige Kondensationspro dukt kristallisiert aus Benzol oder Benzin in derben farblosen Nadeln vom Schmelz punkt 158-160' (Erweichen bei 150-1520). Es ist leicht löslich in MineraLäuren und lässt sich daraus durch Alkali in kristallisier ter Form ausfällen. Es soll als Zwischen produkt zur Herstellung von Farbstoffen dienen. The new trinuclear condensation product crystallizes from benzene or gasoline in coarse, colorless needles with a melting point of 158-160 '(softening at 150-1520). It is easily soluble in mineral acids and can be precipitated in crystallized form by alkali. It is intended to serve as an intermediate product in the manufacture of dyes.
CH138196D 1927-09-22 1928-02-08 Process for the preparation of a condensation product from cyclohexanone. CH138196A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE138196X 1927-09-22
CH133476T 1928-02-08

Publications (1)

Publication Number Publication Date
CH138196A true CH138196A (en) 1930-02-15

Family

ID=25712089

Family Applications (1)

Application Number Title Priority Date Filing Date
CH138196D CH138196A (en) 1927-09-22 1928-02-08 Process for the preparation of a condensation product from cyclohexanone.

Country Status (1)

Country Link
CH (1) CH138196A (en)

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