CH134275A - Process for the preparation of a condensation product of the benzodiazine series. - Google Patents

Process for the preparation of a condensation product of the benzodiazine series.

Info

Publication number
CH134275A
CH134275A CH134275DA CH134275A CH 134275 A CH134275 A CH 134275A CH 134275D A CH134275D A CH 134275DA CH 134275 A CH134275 A CH 134275A
Authority
CH
Switzerland
Prior art keywords
condensation product
benzodiazine
series
preparation
product
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 CH134275A publication Critical patent/CH134275A/en

Links

Description

  

      Verfahren    zur Darstellung     eines    Kondensationsproduktes der     Benzodiazinreihe.       Gegenstand dieses Patentes ist ein Ver  fahren zur Darstellung eines Kondensations  produktes der     Benzodiazinreihe    von der Formel:  
EMI0001.0005     
    welches dadurch gekennzeichnet ist, dass man  1     Mol.        2.4-Dihalogenchinazolin    mit 2     Mol.          2-Amino-5-ogynaphtalin-7-sulfosäure    konden  siert.    Das Kondensationsprodukt soll als Zwi  schenprodukt für     Farbstoffe    oder auch für  pharmazeutische Produkte gebraucht werden.

    <I>Beispiel:</I>  Man löst 19,9 Gewichtsteile 2.     4-Dichlor-          chinazolin    (110     Mol.)    in 23,5 Volumenteilen  Aceton und tropft diese Lösung unter gutem  Rühren bei 65   zu einer Lösung von 52 Ge  wichtsteilen     2-Amino-5-ogynaphtalin-7-sulfo-          säure    (saures     Natriumsalz),    2/10     Mol.)    und  33,0 Gewichtsteilen     kristallisiertem    Natrium  acetat in 600 Volumenteilen Wasser.

   Man  hält etwa zwei Stunden auf 70  , erhitzt dann  unter gleichzeitigem     Abdestillieren    des Ace  tons auf und hält diese Temperatur bis die       2-Amino-5-ogynaphtalin-7-sulfosäure    fast ganz  verschwunden ist. Durch     Aussalzen    erhält  man ein     Natriumsalz    des Kondensationspro  duktes von der in der Einleitung angege  benen Formel;

   als gelblich grauen schleimigen  Niederschlag, nach dem     Filtrieren    und Trock-           nen    als graues, in Wasser mit schwach  gelblicher Farbe leicht lösliches Pulver, das  nicht mehr mit salpetriger Säure reagiert, in  alkalischer Lösung keine Fluoreszenz besitzt  und mit 2     Mol.    von     Diazoverbindungen     kuppelt.



      Process for the preparation of a condensation product of the benzodiazine series. The subject of this patent is a process for the preparation of a condensation product of the benzodiazine series of the formula:
EMI0001.0005
    which is characterized in that 1 mole of 2,4-dihaloquinazoline is condensed with 2 moles of 2-amino-5-ogynaphthalene-7-sulfonic acid. The condensation product should be used as an inter mediate product for dyes or for pharmaceutical products.

    <I> Example: </I> 19.9 parts by weight of 2,4-dichloroquinazoline (110 mol.) Are dissolved in 23.5 parts by volume of acetone, and this solution is added dropwise with thorough stirring at 65 to a solution of 52 parts by weight of 2 -Amino-5-ogynaphthalene-7-sulfonic acid (acid sodium salt), 2/10 mol.) And 33.0 parts by weight of crystallized sodium acetate in 600 parts by volume of water.

   It is kept at 70 for about two hours, then heated while the ace tons are distilled off at the same time and this temperature is maintained until the 2-amino-5-ogynaphthalene-7-sulfonic acid has almost completely disappeared. Salting out gives a sodium salt of the condensation product of the formula given in the introduction;

   as a yellowish gray slimy precipitate, after filtering and drying as a gray powder, easily soluble in water with a slightly yellowish color, which no longer reacts with nitrous acid, has no fluorescence in alkaline solution and couples with 2 mol. of diazo compounds.

 

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines Konden sationsproduktes der Benzodiazinreihe der Formel EMI0002.0005 dadurch gekennzeichnet, dass man 1 Mol. 2. 4-Dihalogenchinazoli)i mit 2 Mol. 2-Amino- 5-oxynaphtalin-7-sulfosäure kondensiert. Es bildet als Natriumsalz ein graues, in Wasser mit schwach gelblicher Farbe leicht lösliches Pulver, das nicht mehr mit salpe triger Säure reagiert, in alkalischer Lösung keine Fluoreszenz besitzt und mit 2 Mol. von Diazoverbindungen kuppelt. PATENT CLAIM: Process for the preparation of a condensation product of the benzodiazine series of the formula EMI0002.0005 characterized in that 1 mole of 2,4-dihaloquinazoli) i is condensed with 2 moles of 2-amino-5-oxynaphthalene-7-sulfonic acid. As the sodium salt, it forms a gray powder which is easily soluble in water with a slightly yellowish color, which no longer reacts with nitrous acid, has no fluorescence in alkaline solution and couples with 2 mol. Of diazo compounds. Das Kondensationsprodukt soll als Zwi schenprodukt für Farbstoffe oder auch für pharmazeutische Produkte gebraucht werden. The condensation product should be used as an inter mediate product for dyes or for pharmaceutical products.
CH134275D 1926-12-13 1927-12-12 Process for the preparation of a condensation product of the benzodiazine series. CH134275A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE134275X 1926-12-13
CH133192T 1927-12-12

Publications (1)

Publication Number Publication Date
CH134275A true CH134275A (en) 1929-07-15

Family

ID=25711986

Family Applications (1)

Application Number Title Priority Date Filing Date
CH134275D CH134275A (en) 1926-12-13 1927-12-12 Process for the preparation of a condensation product of the benzodiazine series.

Country Status (1)

Country Link
CH (1) CH134275A (en)

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