CH139638A - 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
- CH139638A CH139638A CH139638DA CH139638A CH 139638 A CH139638 A CH 139638A CH 139638D A CH139638D A CH 139638DA CH 139638 A CH139638 A CH 139638A
- Authority
- CH
- Switzerland
- Prior art keywords
- condensation product
- mol
- solution
- series
- preparation
- Prior art date
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- Heat Sensitive Colour Forming Recording (AREA)
Description
. Verfahren zur Darstellung eines Kondensationsproduktes der Benzodiazinreihe. Gegenstand vorliegender Erfindung ist ein Verfahren zur Darstellung eines Kon densationsproduktes der Benzod'ia@zinreihe, daiglurch :gekennzeichnet, dass man 1 Mol. 6- Nitro-2.4-dichl'orchinazo@lin mit 1 Mol. 1- Amino-8=oxynapbtalin-3.6--disulfosäure und 1 Mol. Aniilin kondensiert. <I>Beispiel:
</I> 34,1 Gewichtsteile des sauren Natrium- saIzes :der 1-Amino,8-oxynaphtaIin-3.6-,di- su'lfosäure werden unter Zusatz von etwas Natronlauge in 700 Teilen Wasser gelöst.
Man trägt in diese Lösung bei 35 Ibis 40' 24,3 Gewichtsteile feinst gepulvertes 6-Nitro- 2.4-dichlorchina,zolin ein. Sobald idie 1- Amino-8-,oxynaphtalin-,3.6-disulfosäure ver- sAhwunden ist, gibt man 20 Gewichtsteile Anilin zu und erhitzt auf 80 bis 90 .
Nach 4 bis 5 Stunden macht man mit ;Soda,deut- lich alkalisch und destilliert das überschüs sige Anilin mit Wasserdampf ab. Beim Er- kalten scheidet sich das Reaktionsprodukt, dem als freie :Säure die Formel
EMI0001.0041
mikommt, als gallertige Masse ab.
Durch Zusatz von Kochsalz und gutes Rühren wir:l ,die Masse gut filtrierbar. ,Sie wird abgesaugt, gut ausgepresst und .getrocknet.
Unter Zusatz von Natronlauge kann man sie in Wasser lösen. Diese Lösung ist gelb, sie fluoresziert nicht. Das Kondensations produkt kuppelt mit 1 Mol. einer Diazonium- verbind'ung. Durch Reduktion :mit Eisen und Essigsäure erhält man einen Körper der Formel:
EMI0002.0002
Dieses, ein sehwa"chbraunes, in 'Sodalösunn leicht lösliches Pulver, lässt sich in der übli chen Weise diazotieren. Giesst man idie Di- azoniumverbindung in eine Sadalösung, so erhält man durch innere Kupplung eine blaue Färbung, welche sehr unbeständig ist.
. Process for the preparation of a condensation product of the benzodiazine series. The present invention relates to a process for the preparation of a condensation product of the Benzod'ia @ zin series, daiglurch: characterized in that 1 mol. 6- Nitro-2.4-dichl'orchinazo@lin with 1 mol. 1- Amino-8 = oxynapbtalin- 3.6 - disulfonic acid and 1 mole of aniline condensed. <I> example:
34.1 parts by weight of the acidic sodium salt: the 1-amino, 8-oxynaphthaine-3.6-, di-su'lfoic acid are dissolved in 700 parts of water with the addition of a little sodium hydroxide solution.
In this solution, at 35 ibis 40 ', 24.3 parts by weight of extremely fine powdered 6-nitro-2,4-dichlorochina, zoline are added. As soon as the 1-amino-8-, oxynaphthalene-, 3,6-disulfonic acid is gone, 20 parts by weight of aniline are added and the mixture is heated to 80 to 90.
After 4 to 5 hours you join in; Soda, clearly alkaline, and distill off the excess aniline with steam. When it cools down, the reaction product separates out as a free acid: the formula
EMI0001.0041
mikommt, as a gelatinous mass.
By adding table salt and stirring well we: l, the mass can be easily filtered. , It is vacuumed, squeezed out well and dried.
They can be dissolved in water with the addition of caustic soda. This solution is yellow, it does not fluoresce. The condensation product couples with 1 mole of a diazonium compound. By reduction: with iron and acetic acid you get a body of the formula:
EMI0002.0002
This, a very brown powder which is easily soluble in soda solution, can be diazotized in the usual way. If the diazonium compound is poured into a Soda solution, an internal coupling gives a blue coloration which is very unstable.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE139638X | 1927-03-31 | ||
CH133192T | 1927-12-12 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH139638A true CH139638A (en) | 1930-04-30 |
Family
ID=25711996
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH139638D CH139638A (en) | 1927-03-31 | 1928-03-20 | Process for the preparation of a condensation product of the benzodiazine series. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH139638A (en) |
-
1928
- 1928-03-20 CH CH139638D patent/CH139638A/en unknown
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