CH188620A - Process for the preparation of a condensation product from a cyclic monoketone. - Google Patents

Process for the preparation of a condensation product from a cyclic monoketone.

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Publication number
CH188620A
CH188620A CH188620DA CH188620A CH 188620 A CH188620 A CH 188620A CH 188620D A CH188620D A CH 188620DA CH 188620 A CH188620 A CH 188620A
Authority
CH
Switzerland
Prior art keywords
condensation product
preparation
hydrochloric acid
production
cyclic
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 CH188620A publication Critical patent/CH188620A/en

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Description

  

  Verfahren zur Herstellung eines Kondensationsproduktes aus einem zyklischen       Monoketon.       Es wurde gefunden, dass sich     Fluorenon     und seine     Substitutionsprodukte    mit primären  Aminen der     Benzolreihe    mit freier     p-Stellung     in Gegenwart von Mineralsäuren kondensieren  lassen.  



  Vorliegendes Patent bezieht sich nun auf  ein Verfahren zur Herstellung eines Konden  sationsproduktes aus einem zyklischen Mono  keton, dadurch gekennzeichnet, dass man       Fluorenon    mit Anilin in Gegenwart einer  Mineralsäure auf höhere Temperatur erhitzt.  



  Das so erhaltene neue Kondensations  produkt der Formel:  
EMI0001.0007     
    enthält zwei primäre     Aminogruppen    und wird  aus     gylol    umkristallisiert in feinen farblosen       Nädelchen    vom Schmelzpunkt 233   C erhal  ten. Das salzsaure Salz der Base kristallisiert  in schneeweissen Blättchen, welche in ver  dünnter Salzsäure verhältnismässig schwer  löslich sind. Das Kondensationsprodukt soll  als Zwischenprodukt zur Herstellung von  Farbstoffen und pharmazeutischen Produkten  Verwendung finden.  



  <I>Beispiel:</I>  90 kg     Fluorennn    werden mit 163 kg  Anilin und 150 Litern     10-n-Schwefelsäure     während mehrerer Stunden im     Autoklaven     auf 140-1500 C erhitzt. Dann wird das  überschüssige Anilin in     sodaalkalischer    Lö  sung mit Wasserdampf abgeblasen, der Rück  stand mit verdünnter Salzsäure in Lösung  gebracht und aus dieser Lösung des salz  sauren Salzes die freie Base mit Alkali aus  gefällt.



  Process for the preparation of a condensation product from a cyclic monoketone. It has been found that fluorenone and its substitution products can be condensed with primary amines of the benzene series with free p-position in the presence of mineral acids.



  The present patent now relates to a process for the preparation of a condensation product from a cyclic mono ketone, characterized in that fluorenone is heated to a higher temperature with aniline in the presence of a mineral acid.



  The resulting new condensation product of the formula:
EMI0001.0007
    Contains two primary amino groups and is recrystallized from glycol in fine, colorless needles with a melting point of 233 C. The hydrochloric acid salt of the base crystallizes in snow-white flakes, which are relatively sparingly soluble in dilute hydrochloric acid. The condensation product is intended to be used as an intermediate for the production of dyes and pharmaceutical products.



  <I> Example: </I> 90 kg of fluorine are heated with 163 kg of aniline and 150 liters of 10-n-sulfuric acid in an autoclave to 140-1500 C for several hours. Then the excess aniline in soda-alkaline solution is blown off with steam, the residue was brought into solution with dilute hydrochloric acid and the free base is precipitated with alkali from this solution of the acidic salt.

Claims (1)

PA TENTANSPRUCFI Verfahren zur Herstellung eines Konden sationsproduktes aus einem zyklischen Mono keton, dadurch gekennzeichnet, dass man Fluorenon mit Anilin in Gegenwart einer Mineralsäure auf höhere Temperaturen er hitzt. Das so erhaltene neue Kondensations produkt der Formel: EMI0002.0005 enthält zwei primäre Aminogruppen und wird aus Xylol unikristallisiert in feinen farblosen Nädelchen vom Schmelzpunkt<B>2330</B> C erhal tet). PA TENTANSPRUCFI Process for the production of a condensation product from a cyclic mono ketone, characterized in that fluorenone is heated to higher temperatures with aniline in the presence of a mineral acid. The resulting new condensation product of the formula: EMI0002.0005 contains two primary amino groups and is obtained unicrystallized from xylene in fine, colorless needles with a melting point of <B> 2330 </B> C). Das salzsaure Salz der Base kristallisiert in schneeweissen Blättchen, welche in ver dünnter Salzsäure verhältnismässig schwer löslich sind. Das Kondensationsprodukt soll als Zwischenprodukt zur Herstellung von Farbstoffen und pharmazeutischen Produkten Verwendung finden. The hydrochloric acid salt of the base crystallizes in snow-white flakes, which are relatively sparingly soluble in dilute hydrochloric acid. The condensation product is intended to be used as an intermediate for the production of dyes and pharmaceutical products.
CH188620D 1935-01-15 1935-12-31 Process for the preparation of a condensation product from a cyclic monoketone. CH188620A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE188620X 1935-01-15

Publications (1)

Publication Number Publication Date
CH188620A true CH188620A (en) 1937-01-15

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ID=5720956

Family Applications (1)

Application Number Title Priority Date Filing Date
CH188620D CH188620A (en) 1935-01-15 1935-12-31 Process for the preparation of a condensation product from a cyclic monoketone.

Country Status (1)

Country Link
CH (1) CH188620A (en)

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