CH105938A - Process for the preparation of a diaminodiaryldialkylmethane. - Google Patents

Process for the preparation of a diaminodiaryldialkylmethane.

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Publication number
CH105938A
CH105938A CH105938DA CH105938A CH 105938 A CH105938 A CH 105938A CH 105938D A CH105938D A CH 105938DA CH 105938 A CH105938 A CH 105938A
Authority
CH
Switzerland
Prior art keywords
sep
preparation
diaminodiaryldialkylmethane
acetone
boiling water
Prior art date
Application number
Other languages
German (de)
Inventor
Farbwerke Vorm Meiste Bruening
Original Assignee
Hoechst 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 Hoechst Ag filed Critical Hoechst Ag
Publication of CH105938A publication Critical patent/CH105938A/en

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

Description

  

  Verfahren zur Darstellung eines     Diaminodiaryldialkylmethans.       Es wurde gefunden, dass bei der Einwir  kung von     Anilinsalzen    in wässriger Lösung  auf Aceton ein     Diaminodiphenyldialkylmethan     erhalten wird.  



  Das aus Anilin und Aceton erhältliche       Diamiiiodiphenyldimethylmethali    entspricht  der Formel:  
EMI0001.0005     
  
EMI0001.0006     
  
    Analyse: <SEP> Gefunden: <SEP> Berechnet:
<tb>  C <SEP> = <SEP> 180 <SEP> 79,58 <SEP>  /0 <SEP> <B>79,650/,</B>
<tb>  H <SEP> = <SEP> 18 <SEP> 7,95 <SEP>  /o <SEP> <B>7,960</B> <SEP> /o
<tb>  N <SEP> = <SEP> 28 <SEP> 12,44% <SEP> <B>12,390A</B>       Das     Diaminodiphenyldialkylniethan    bildet  einen wertvollen Ausgangsstoff zur Herstel  lung von     Farbstoffen    verschiedener Gruppen.  <I>Beispiel:</I>  Man löst 370 Gewichtsteile Anilin mit  der erforderlichen Menge Salzsäure in etwa  1500 Teilen Wasser, fügt 60 Gewichtsteile    Aceton hinzu und erhitzt in einem Druck  gefäss 6 Stunden auf etwa<B>120-1500</B> C.

    Nach dem Erkalten macht man mit Ätz  natron, Soda oder Kalk alkalisch, treibt den  Überschuss von Anilin mit Wasserdampf ab  und kristallisiert das zurückbleibende Roh  produkt aus siedendem Wasser um. Man er  hält so das     Diaminodyphenyldimethylmethan     in Form von farblosen, nadelförmigen, bei  132  C sch     melzenderiKristallen.    Es löst sich in  verdünnten     Mineralsäuren    und in den üblichen  organischen Lösungsmitteln, ist unlöslich in  kaltem, reichlich löslich in siedendem Wasser.  



  Die     Gewichtmengen    der Ausgangsstoffe  in obigem Beispiel können in weiten Grenzen  verändert werden; an Stelle von Salzsäure  kann man andere Säuren, zum Beispiel Schwe  felsäure, verwenden.  



  Das     Diaminodiphenyldimethylmethan    stellt  farblose, nadelförmige, bei 132   schmelzende  Kristalle dar. Es löst sich in verdünnten  Mineralsäuren und in den üblichen organischen  Lösungsmitteln, ist unlöslich in kaltem, reich  lich löslich in siedendem Wasser.



  Process for the preparation of a diaminodiaryldialkylmethane. It has been found that the action of aniline salts in aqueous solution on acetone gives a diaminodiphenyldialkylmethane.



  The diamiiiodiphenyldimethylmethali obtainable from aniline and acetone corresponds to the formula:
EMI0001.0005
  
EMI0001.0006
  
    Analysis: <SEP> Found: <SEP> Calculated:
<tb> C <SEP> = <SEP> 180 <SEP> 79.58 <SEP> / 0 <SEP> <B> 79.650 /, </B>
<tb> H <SEP> = <SEP> 18 <SEP> 7.95 <SEP> / o <SEP> <B> 7.960 </B> <SEP> / o
<tb> N <SEP> = <SEP> 28 <SEP> 12.44% <SEP> <B> 12.390A </B> Diaminodiphenyldialkylniethane is a valuable starting material for the production of dyes from various groups. <I> Example: </I> Dissolve 370 parts by weight of aniline with the required amount of hydrochloric acid in about 1500 parts of water, add 60 parts by weight of acetone and heat in a pressure vessel to about <B> 120-1500 </B> for 6 hours C.

    After cooling, make alkaline with caustic soda, soda or lime, drive off the excess aniline with steam and recrystallize the remaining raw product from boiling water. Diaminodyphenyldimethylmethane is thus obtained in the form of colorless, needle-shaped crystals that melt at 132 ° C. It dissolves in dilute mineral acids and in the usual organic solvents, is insoluble in cold, abundantly soluble in boiling water.



  The weight amounts of the starting materials in the above example can be changed within wide limits; Instead of hydrochloric acid, other acids, for example sulfuric acid, can be used.



  Diaminodiphenyldimethylmethane is colorless, needle-shaped crystals that melt at 132. It dissolves in dilute mineral acids and in the usual organic solvents, is insoluble in cold and abundantly soluble in boiling water.

 

Claims (1)

PATENT AI\ SPRUM Verfahren zur Darstellung eines Diamino- diar@yldiall#:y>lrnetharis, dadurch gekennzeichnet, dar man Anilinsalze auf Aceton zur Ein wirkung bringt. Das Diaminodipheny ldimetliylinethan stellt farblose, nadelförmige, bei 132" schmelzende Kristalle dar. Es löst sich in verdünnten Mineralsäuren und in den üblichen organischen Lösungsmitteln, ist unlöslich in kaltem, reich lich löslich in siedendem Wasser. PATENT AI \ SPRUM Process for the preparation of a diamino diar @ yldiall #: y> lrnetharis, characterized in that aniline salts are brought into action on acetone. Diaminodiphenyldimethylinethane is colorless, needle-shaped crystals melting at 132 ". It dissolves in dilute mineral acids and common organic solvents, is insoluble in cold and abundantly soluble in boiling water.
CH105938D 1922-09-29 1923-09-20 Process for the preparation of a diaminodiaryldialkylmethane. CH105938A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE105938X 1922-09-29

Publications (1)

Publication Number Publication Date
CH105938A true CH105938A (en) 1924-07-16

Family

ID=5650506

Family Applications (1)

Application Number Title Priority Date Filing Date
CH105938D CH105938A (en) 1922-09-29 1923-09-20 Process for the preparation of a diaminodiaryldialkylmethane.

Country Status (1)

Country Link
CH (1) CH105938A (en)

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