CH194340A - Process for the preparation of a naphthylene naphthylimidazole-bis-carboxyethylanilide. - Google Patents
Process for the preparation of a naphthylene naphthylimidazole-bis-carboxyethylanilide.Info
- Publication number
- CH194340A CH194340A CH194340DA CH194340A CH 194340 A CH194340 A CH 194340A CH 194340D A CH194340D A CH 194340DA CH 194340 A CH194340 A CH 194340A
- Authority
- CH
- Switzerland
- Prior art keywords
- sep
- bis
- naphthylene
- naphthylimidazole
- preparation
- Prior art date
Links
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
Verfahren zur Herstellung eines Naphtoylennaphtylimidazol-bis-carbogyäthylanilids. Das vorliegende Patent betrifft ein Ver fahren zur Herstellung eines Naphtoylen- 1 : ?-naphtylimidazol-bis-carbogyäthylanilids, welches die folgende Formel besitzt:
EMI0001.0008
durch Erhitzen von 1 : 8-Dica.rbogynaphtha- lin-4 : 5-bis-carbogyäthylanilid-anlhydrid mit 1 : 2-Naphthylendiamin.
Man kann hierbei Anhydrid des 1 :8- Dicarbogynaphthalin-4 : 5 -bis-carbogyäthyl- anilids verwenden, das erhalten wurde durch Erhitzung von 1:8-Dicarbogynaphthalin- 4:5-bis-carbogyäthylanilid bei Gegenwart des 1 :
2-Naphthylendiamins. Die Dicarbon- säure wird, wie sich zeigte, in das Anhydrid umgewandelt, bevor Kondensation mit Naph- thylendiamin stattfindet.
Die Erhitzung der Ausgangsstoffe kann in Gegenwart einer Flüssigkeit, eines Lö sungsmittels oder eines Verdünnungsmittels, zum Beispiel Eisessig, bewirkt werden.
Die Verbindung ist neu. Sie ist ein orange-rötliches Produkt, das sich in konzen trierter Schwefelsäure mit roter Farbe löst. Es ist ein Zwischenprodukt für .die Herstel lung von Farbstoffen.
<I>Beispiel:</I> Eine Suspension von 68 Teilen 1 : 2-Naph- thylendiamin und 197 Teilen 1 : 8-Dicarbogy- naphthalin-4 :
5 -bis-carbogyäthylanil.idanhy- drid in 800 Teilen Eisessig werden unter RüekfluB während .drei Stundenerhitzt; das Gemisch wird dann in 4000 Teile kochendes Wasser .gegossen und das ungelöste Material abfiltriert.
Process for the preparation of a naphthylene naphthylimidazole-bis-carbogyäthylanilids. The present patent relates to a process for producing a naphthylene 1:? -Naphtylimidazole-bis-carbogyäthylanilids, which has the following formula:
EMI0001.0008
by heating 1: 8-Dica.rbogynaphthalin-4: 5-bis-carbogyäthylanilid-anlhydrid with 1: 2-naphthylenediamine.
You can use anhydride of 1: 8-dicarbogynaphthalene-4: 5 -bis-carbogyethyl anilide, which was obtained by heating 1: 8-dicarbogynaphthalene-4: 5-bis-carbogyethylanilide in the presence of the 1:
2-naphthylenediamine. As has been shown, the dicarboxylic acid is converted into the anhydride before condensation with naphthylenediamine takes place.
The starting materials can be heated in the presence of a liquid, a solvent or a diluent, for example glacial acetic acid.
The connection is new. It is an orange-reddish product that dissolves in concentrated sulfuric acid with a red color. It is an intermediate product for the manufacture of dyes.
<I> Example: </I> A suspension of 68 parts of 1: 2-naphthylenediamine and 197 parts of 1: 8-dicarbogynaphthalene-4:
5-bis-carbogyäthylanil.idanhydride in 800 parts of glacial acetic acid are heated under reflux for three hours; the mixture is then poured into 4000 parts of boiling water and the undissolved material is filtered off.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB194340X | 1934-08-08 | ||
CH187424T | 1935-07-31 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH194340A true CH194340A (en) | 1937-11-30 |
Family
ID=25721521
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH194340D CH194340A (en) | 1934-08-08 | 1935-07-31 | Process for the preparation of a naphthylene naphthylimidazole-bis-carboxyethylanilide. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH194340A (en) |
-
1935
- 1935-07-31 CH CH194340D patent/CH194340A/en unknown
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