CH134279A - 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
CH134279A
CH134279A CH134279DA CH134279A CH 134279 A CH134279 A CH 134279A CH 134279D A CH134279D A CH 134279DA CH 134279 A CH134279 A CH 134279A
Authority
CH
Switzerland
Prior art keywords
condensation product
series
benzodiazine
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 CH134279A publication Critical patent/CH134279A/en

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Description

  

  Verfahren zur Darstellung eines     Kondelisationsproduktes    der     Benzodiazinreihe.       Gegenstand dieses Patentes ist ein Ver  fahren zur Darstellung eines Kondensations  produktes der     Benzodiazinreihe    von der Formel  
EMI0001.0004     
    welches dadurch gekennzeichnet ist, dass man  1     Mol.        2.4-Dihaloger)chinazolin    mit 2     Mol.     Anilin kondensiert.  



  Das Kondensationsprodukt soll als Zwi  schenprodukt für Farbstoffe oder auch für  pharmazeutische Produkte gebraucht werden.       Beispiel:     4,0 Gewichtsteile (2/100     Mol.)        2.4-Di-          chlorchinazolin    werden in 25 Volumenteilen  trockenem     Toluol    suspendiert;

   ferner löst man  3,8 Gewichtsteile (4/100     Mol.)    Anilin in    20 Volumenteilen     Toluol,    gibt 3,6 Gewichts  teile wasserfreies     Natriumacetat    zu, giesst  die Lösung zusammen und erhitzt das Ganze  unter Rühren auf     9511.    Wenn nach beendeter  Umsetzung alles Anilin verschwunden ist,       lässt    man erkalten, worauf der grösste Teil  des Kondensationsproduktes sich in farblosen  Kristallkrusten abscheidet.

   Man saugt ab,  löst in Eisessig und setzt zur filtrierten Lö  sung Wasser bis zur beginnenden Trübung;  die neue Verbindung fällt als schneeweisses  Pulver (Raufwerk feiner     Nädelehen);    es ist  halogenfrei, unterscheidet sich also wesent  lich von der von     Kötz    (Journal für praktische  Chemie, Band 47, neue Folge, Seite 303)  beschriebenen Verbindung. Die Substanz be  sitzt die Formel, welche bereits in der Ein  leitung angeführt ist.



  Process for the preparation of a condelization product of the benzodiazine series. The subject of this patent is a process for the representation of a condensation product of the benzodiazine series of the formula
EMI0001.0004
    which is characterized in that 1 mole of 2,4-dihalo) quinazoline is condensed with 2 moles of aniline.



  The condensation product should be used as an inter mediate product for dyes or for pharmaceutical products. Example: 4.0 parts by weight (2/100 mol.) 2,4-dichloroquinazoline are suspended in 25 parts by volume of dry toluene;

   Furthermore, 3.8 parts by weight (4/100 mol.) of aniline are dissolved in 20 parts by volume of toluene, 3.6 parts by weight of anhydrous sodium acetate are added, the solution is poured together and the whole is heated to 9511 with stirring. When all aniline has disappeared after the reaction has ended is allowed to cool, whereupon most of the condensation product is deposited in colorless crystal crusts.

   It is suctioned off, dissolved in glacial acetic acid and water is added to the filtered solution until it begins to cloud; the new connection falls as a snow-white powder (rubbing of fine needlework); it is halogen-free, so it differs significantly from the compound described by Kötz (Journal for Practical Chemistry, Volume 47, New Series, page 303). The substance has the formula that is already given in the introduction.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines Konden sationsproduktes der Benzodiazinreihe von der Formel: EMI0002.0001 dadurch gekennzeichnet, -dass man 1 Möl. 2.4-Dihalogenchinazolin -mit 2 Mol. .Anilin kondensiert. Das Kondensationsprodukt. soll als Zwi schenprodukt für Farbstoffe oder auch für pharmazeutische Produkte gebraucht werden. Das Kondensationsprodukt ist ein schnee weisses Pulver; es ist halogenfrei. PATENT CLAIM: Process for the preparation of a condensation product of the benzodiazine series of the formula: EMI0002.0001 characterized in that one Möl. 2,4-Dihaloquinazoline - condensed with 2 moles of aniline. The condensation product. should be used as an inter mediate product for dyes or for pharmaceutical products. The condensation product is a snow-white powder; it is halogen free.
CH134279D 1926-12-13 1927-12-12 Process for the preparation of a condensation product of the benzodiazine series. CH134279A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE134279X 1926-12-13
CH133192T 1927-12-12

Publications (1)

Publication Number Publication Date
CH134279A true CH134279A (en) 1929-07-15

Family

ID=25711990

Family Applications (1)

Application Number Title Priority Date Filing Date
CH134279D CH134279A (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) CH134279A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2488379A (en) * 1949-11-15 Quinazoline derivatives
US2497347A (en) * 1944-09-05 1950-02-14 Ici Ltd Quinoline derivatives

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2488379A (en) * 1949-11-15 Quinazoline derivatives
US2497347A (en) * 1944-09-05 1950-02-14 Ici Ltd Quinoline derivatives

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