CH281979A - Process for the preparation of a polyarylethylene derivative. - Google Patents
Process for the preparation of a polyarylethylene derivative.Info
- Publication number
- CH281979A CH281979A CH281979DA CH281979A CH 281979 A CH281979 A CH 281979A CH 281979D A CH281979D A CH 281979DA CH 281979 A CH281979 A CH 281979A
- Authority
- CH
- Switzerland
- Prior art keywords
- nitro
- derivative
- aryl
- parts
- polyarylethylene
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C309/00—Sulfonic acids; Halides, esters, or anhydrides thereof
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
verfahren zur Herstellung eines Polyaryläthylenderivates. Gegenstand vorliegenden Patentes ist ein Verfahren zur Herstellung eines Polyaryl- äthylenderivates, welches dadurch gekenn zeichnet ist, dass man Terephthalaldehyd mit einem 4-Nitro-toluol-2-sulfonsäurearylester kondensiert und den erhaltenen Distyrylben- zoldisulfonsäurearylester verseift.
Die neue Verbindung, das 1,4-Di-(2'-sul- fonsäure-4'-nitro-styryl)-benzol, kristallisiert als Kaliumsalz in roten Kristallen, die sich in heissem Wasser und oranger Farbe lösen. Sie soll als Zwischenprodukt Verwendung fin den.
<I>Beispiel:</I> 30 Teile 4-Nitro-toluol-2-sulfonsäurephenyl- ester und 6,7 Teile Terephthalaldehyd werden mit 1,7 Teilen Piperidin während einer Stunde auf 135 bis 145 erhitzt. Unter lebhafter Was serabspaltung erstarrt das anfänglich flüssige Reaktionsgemisch zu einer gelben, kristallinen Masse. Das Reaktionsprodukt kristallisiert aus Ni- trobenzol-Eisessig <B>1:1</B> in dunkelgelben Pris men vom Schmelzpunkt 239 bis 241 .
Die Aus- beute beträgt 29 Teile, das sind 85 % der Theo- rie. Das Kondensationsprodukt ist ein Deri vat des 1,4-Distyrylbenzols.
27,4 Teile des erhaltenen Esters in 165 Tei len Äthylenglykol werden auf 170 erhitzt und unter Rühren eine Lösung von 5,8 Teilen Ka- liumkarbonat in 6 Teilen Wasser innerhalb 30 Minuten zugegeben. Zu Beginn der Opera tion wird die Temperatur des Ölbades auf 220 gehalten und dann auf 150 bis 160 zu rückgegangen. Es wird bei dieser Temperatur weitergerührt, bis eine klare, dunkelbraune Lösung erhalten wird und sich eine Probe davon in heissem Wasser klar löst. Dann wird auf 120 hinuntergegangen, 8 Teile feingepul- vertes Kaliumchlorid hinzugegeben und unter Rühren auf Zimmertemperatur abkühlen ge lassen.
Das Kaliumsalz der neuen Sulfonsäure wird abfiltriert, mit 5 % Kaliumchloridlösung gewaschen und getrocknet.
process for the preparation of a polyarylethylene derivative. The present patent relates to a process for the production of a polyaryl ethylene derivative, which is characterized in that terephthalaldehyde is condensed with an aryl 4-nitro-toluene-2-sulfonate and the aryl distyrylbenzenesulfonate is saponified.
The new compound, 1,4-di- (2'-sulphonic acid-4'-nitro-styryl) -benzene, crystallizes as the potassium salt in red crystals, which dissolve in hot water and have an orange color. It should be used as an intermediate product.
<I> Example: </I> 30 parts of 4-nitro-toluene-2-sulfonic acid phenyl ester and 6.7 parts of terephthalaldehyde are heated to 135 to 145 with 1.7 parts of piperidine for one hour. With vigorous splitting off of water, the initially liquid reaction mixture solidifies to a yellow, crystalline mass. The reaction product crystallizes from nitrobenzene-glacial acetic acid <B> 1: 1 </B> in dark yellow prisms with a melting point of 239 to 241.
The yield is 29 parts, that is 85% of the theory. The condensation product is a derivative of 1,4-distyrylbenzene.
27.4 parts of the ester obtained in 165 parts of ethylene glycol are heated to 170 and a solution of 5.8 parts of potassium carbonate in 6 parts of water is added over 30 minutes with stirring. At the beginning of the operation, the temperature of the oil bath is kept at 220 and then decreased to 150 to 160. Stirring is continued at this temperature until a clear, dark brown solution is obtained and a sample of it dissolves clearly in hot water. Then go down to 120, add 8 parts of finely powdered potassium chloride and allow to cool to room temperature while stirring.
The potassium salt of the new sulfonic acid is filtered off, washed with 5% potassium chloride solution and dried.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH273394T | 1948-08-13 | ||
CH281979T | 1948-08-13 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH281979A true CH281979A (en) | 1952-03-31 |
Family
ID=25731459
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH281979D CH281979A (en) | 1948-08-13 | 1948-08-13 | Process for the preparation of a polyarylethylene derivative. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH281979A (en) |
-
1948
- 1948-08-13 CH CH281979D patent/CH281979A/en unknown
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