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CH154992A - Process for the preparation of a diacylated diamine. - Google Patents

Process for the preparation of a diacylated diamine.

Info

Publication number
CH154992A
CH154992A CH154992DA CH154992A CH 154992 A CH154992 A CH 154992A CH 154992D A CH154992D A CH 154992DA CH 154992 A CH154992 A CH 154992A
Authority
CH
Switzerland
Prior art keywords
diamine
diacylated
preparation
benzidine
parts
Prior art date
Application number
Other languages
German (de)
Inventor
Gesellschaft Fuer Chemis Basel
Original Assignee
Chem Ind Basel
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 Chem Ind Basel filed Critical Chem Ind Basel
Publication of CH154992A publication Critical patent/CH154992A/en

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C233/00Carboxylic acid amides
    • C07C233/01Carboxylic acid amides having carbon atoms of carboxamide groups bound to hydrogen atoms or to acyclic carbon atoms
    • C07C233/12Carboxylic acid amides having carbon atoms of carboxamide groups bound to hydrogen atoms or to acyclic carbon atoms having the nitrogen atom of at least one of the carboxamide groups bound to a carbon atom of a hydrocarbon radical substituted by halogen atoms or by nitro or nitroso groups
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C233/00Carboxylic acid amides
    • C07C233/01Carboxylic acid amides having carbon atoms of carboxamide groups bound to hydrogen atoms or to acyclic carbon atoms
    • C07C233/16Carboxylic acid amides having carbon atoms of carboxamide groups bound to hydrogen atoms or to acyclic carbon atoms having the nitrogen atom of at least one of the carboxamide groups bound to a carbon atom of a hydrocarbon radical substituted by singly-bound oxygen atoms

Landscapes

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

Description

  

  Verfahren zur Herstellung eines     diaeylierten        Diamins.       Es wurde gefunden, dass man ein wert  volles     diacyliertes        Diamin    erhält, wenn man  2     Mol        p-Kresothrsäure    mit 1     Mol        Benzidin     kondensiert.  



  Das neue Produkt bildet ein grauweisses  Pulver, das aus     Pyridin    umkristallisiert einen  Zersetzungspunkt von 333   hat. Es löst sich  in verdünnten     Ätzalkalien    leicht auf und  zieht aus solchen Lösungen auf tierischer  oder pflanzlicher Faser. Auf diesen     Substraten          vereinigt    es sich mit     Diazoverbindungen    un  ter Bildung echter Färbungen.  



  <I>Beispiel:</I>  76 Teile     p-Kresotinsäure    und 46 Teile       Benzidin    werden in 550 Teilen     Toluol    ein  getragen. Bei zirka 90   lässt man innert zirka       1/z    Stunde 34 Teile     Phosphortrichlorid    zu  tropfen. Hierauf bringt man die Temperatur  langsam auf<B>1100</B> und hält einige Stunden  diese Temperatur inne. Dann wird das Re  aktionsgemisch mit einem Überschuss an Soda  versetzt und das     Toluol    mit Wasserdampf  abgeblasen. Der Rückstand wird filtriert, mit  Wasser nachgewaschen und durch Lösen in    verdünnter Natronlauge, Filtrieren und Aus  fällen mit Säuren gereinigt.  



  Statt in     Toluol    kann man in basischen  Lösungsmitteln, wie zum Beispiel     Diäthyl-          anilin,    arbeiten. In diesem Falle wird zweck  mässig das rohe Kondensationsprodukt durch  Eintragen der Reaktionsmasse in     verdünnte     Säuren gewonnen.



  Process for the preparation of a diaylated diamine. It has been found that a valuable diacylated diamine is obtained if 2 moles of p-cresothric acid are condensed with 1 mole of benzidine.



  The new product forms a gray-white powder which, when recrystallized from pyridine, has a decomposition point of 333. It dissolves easily in dilute caustic alkalis and from such solutions it draws on animal or vegetable fibers. On these substrates it combines with diazo compounds to form true colors.



  <I> Example: </I> 76 parts of p-cresotinic acid and 46 parts of benzidine are introduced into 550 parts of toluene. At about 90, 34 parts of phosphorus trichloride are allowed to drip in about 1 / z hour. The temperature is then slowly brought to <B> 1100 </B> and held at this temperature for a few hours. Then the reaction mixture is mixed with an excess of soda and the toluene is blown off with steam. The residue is filtered, washed with water and purified by dissolving in dilute sodium hydroxide solution, filtering and precipitating with acids.



  Instead of toluene, you can work in basic solvents such as diethyl aniline. In this case, the crude condensation product is advantageously obtained by introducing the reaction mass into dilute acids.

 

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines diacylier- ten Diamins, dadurch gekennzeichnet, dass man 2 Mol p-Kresotinsäure mit 1 Mol Ben- zidin kondensiert. Das neue Produkt bildet ein grauweisses Pulver, das aus Pyridin umkristallisiert sich bei<B>3330</B> zersetzt. Es löst sich in verdünn ten Ätzalkalien leicht auf und zieht aus sol chen Lösungen auf tierischer oder pflanzli cher Faser. Claim: Process for the production of a diacylated diamine, characterized in that 2 moles of p-cresotinic acid are condensed with 1 mole of benzidine. The new product forms a gray-white powder that recrystallizes from pyridine and decomposes at <B> 3330 </B>. It dissolves easily in dilute caustic alkalis and, from such solutions, spreads onto animal or vegetable fibers. Auf diesen Substraten vereinigt es sich mit Diazoverbindurrgerr unter Bildirrig echter Färbungen. On these substrates it combines with diazo compounds to produce true colorations.
CH154992D 1930-09-27 1930-09-27 Process for the preparation of a diacylated diamine. CH154992A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH152875T 1930-09-27
CH154992T 1930-09-27

Publications (1)

Publication Number Publication Date
CH154992A true CH154992A (en) 1932-05-31

Family

ID=25716041

Family Applications (1)

Application Number Title Priority Date Filing Date
CH154992D CH154992A (en) 1930-09-27 1930-09-27 Process for the preparation of a diacylated diamine.

Country Status (1)

Country Link
CH (1) CH154992A (en)

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