CH293614A - Process for the preparation of a derivative of 4,4'-diamino-stilbene-disulfonic acid- (2,2 '). - Google Patents
Process for the preparation of a derivative of 4,4'-diamino-stilbene-disulfonic acid- (2,2 ').Info
- Publication number
- CH293614A CH293614A CH293614DA CH293614A CH 293614 A CH293614 A CH 293614A CH 293614D A CH293614D A CH 293614DA CH 293614 A CH293614 A CH 293614A
- Authority
- CH
- Switzerland
- Prior art keywords
- disulfonic acid
- stilbene
- amino
- disodium salt
- mol
- Prior art date
Links
Landscapes
- Detergent Compositions (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
Verfahren zur Herstellung eines Derivates der 4,4'.Diamino.atilben.disulfonsäure.(2,2'). Es wurde gefunden, dass man zu einem neuen Derivat der 4,4'-Diamino-stilben-disul- fonsäure-(2,2') gelangt., wenn man auf 1 Mol des Dinatriumsalzes der 4-Amino-4'-[2,4-ss- oxyäthy lamino -1,3,5 -triazyl - (6) - amino ] -stil- ben-disulfonsäure- (2,2'),
hergestellt durch Kondensation von 1 Mol Cyanurehlorid mit 1 Mol des Dinatriumsalzes der 4-Nitro-4'- aminostilben-disulfonsäure-(2,2') und 2 Mol Monoäthanolamin und anschliessende Reduk- tion des Nitrokörpers zum Amin, 1 Mol 2- Äthoxy-3-naphthoylchlorid einwirken lässt.
Die Umsetzung kann zum Beispiel in wäs seriger Acetonlösung bei 10 bis 12 unter Auf rechterhaltung einer schwach alkalischen Re aktion vorgenommen werden.
Das so erhaltene neue Dinatriumsalz der 4-[ (2-Äthoxy-3-naphthoyl)-amino]-4'-[2,4-p- oxyäthylamino -1,3,5 - tr iazyl - (6) - amino ] -stil- ben-disulfonsäure-(2,2') der Formel
EMI0001.0038
bildet ein helles, in Wasser lösliches Pulver, das als optisches Aufhellmittel verwendet wer den kann.
<I>Beispiel:</I> Zu einer mit Natriumcarbonat neutralisier ten Lösung von 5,7 Teilen 4-Amino-4'-[2,4-ss- oxyäthylamino-1,3,5-triazyl- (6) -amino]-stil- ben-disulfonsäure- (2,2'), hergestellt durch Kondensation von 1 Mol Cyanurchlorid mit.
1 Mol des Dinatriumsalzes der 4-Nitro-4'- aminostilben-disulfonsäure-(2,2') und 2 Mol Monoät.hanolamin und anschliessende Reduk tion des Nitrokörpers zum Amin, in 60 Teilen 50 1/o lgem Aceton lässt man bei 10 bis 12 innerhalb von 10 Minuten und unter Auf rechterhaltung einer schwach alkalischen Re aktion eine Lösung von 3,5 Teilen 2-Äthoxy- 3-naphthoylchlorid in 15 Teilen Aceton zuflie ssen.
Sobald das Ausgangsmaterial verschwun den ist, fügt man wässerige Natriumchlorid- lösung hinzu, filtriert das abgeschiedene Kon densationsprodukt ab, wäscht mit Natrium chloridlösung nach und trocknet.
Das neue Dinatriumsalz der 4-[ (2-Äthoxy- 3-naphthoyl).-amino]-4'-[2,4 ,8-oxyäthylamino- 1,3, 5-triazy 1- (6) - amino ] - stilben-disulfonsäure- (2,2') erhält man so als helles, wasserlösliches Pulver.
Process for the production of a derivative of 4,4'.Diamino.atilben.disulfonsäure. (2,2 '). It has been found that a new derivative of 4,4'-diamino-stilbene-disulphonic acid- (2,2 ') is obtained, if one mole of the disodium salt of 4-amino-4' - [2 , 4-ss- oxyäthy lamino -1,3,5-triazyl- (6) -amino] -stilbene-disulfonic acid- (2,2 '),
produced by condensation of 1 mole of cyanuric chloride with 1 mole of the disodium salt of 4-nitro-4'-aminostilbene-disulfonic acid- (2,2 ') and 2 moles of monoethanolamine and subsequent reduction of the nitro body to the amine, 1 mole of 2-ethoxy 3-naphthoyl chloride leaves to act.
The reaction can be carried out, for example, in aqueous acetone solution at 10 to 12 while maintaining a weakly alkaline reaction.
The new disodium salt of 4- [(2-ethoxy-3-naphthoyl) -amino] -4 '- [2,4-p-oxyäthylamino -1,3,5 - triazyl - (6) - amino] - thus obtained stilbene-disulfonic acid- (2,2 ') of the formula
EMI0001.0038
forms a light-colored, water-soluble powder that can be used as an optical brightening agent.
<I> Example: </I> To a solution of 5.7 parts of 4-amino-4 '- [2,4-ss- oxyethylamino-1,3,5-triazyl- (6) -amino] neutralized with sodium carbonate ] -stilbene-disulfonic acid- (2,2 '), prepared by condensation of 1 mol of cyanuric chloride with.
1 mol of the disodium salt of 4-nitro-4'-aminostilbene-disulfonic acid (2.2 ') and 2 mol of monoethanolamine and subsequent reduction of the nitro body to the amine, in 60 parts 50 1 / o lgem acetone is left at 10 A solution of 3.5 parts of 2-ethoxy-3-naphthoyl chloride in 15 parts of acetone flows in within 10 minutes and while maintaining a weakly alkaline reaction.
As soon as the starting material has disappeared, aqueous sodium chloride solution is added, the precipitated condensation product is filtered off, washed with sodium chloride solution and dried.
The new disodium salt of 4- [(2-ethoxy-3-naphthoyl) .- amino] -4 '- [2,4, 8-oxyethylamino-1,3, 5-triazy 1- (6) - amino] - stilbene -disulfonic acid- (2,2 ') is obtained as a light-colored, water-soluble powder.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH293614T | 1949-10-28 | ||
CH287192T | 1949-10-28 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH293614A true CH293614A (en) | 1953-09-30 |
Family
ID=25732688
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH293614D CH293614A (en) | 1949-10-28 | 1949-10-28 | Process for the preparation of a derivative of 4,4'-diamino-stilbene-disulfonic acid- (2,2 '). |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH293614A (en) |
-
1949
- 1949-10-28 CH CH293614D patent/CH293614A/en unknown
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