CH216306A - Process for the preparation of a new derivative of a heterocyclic compound. - Google Patents
Process for the preparation of a new derivative of a heterocyclic compound.Info
- Publication number
- CH216306A CH216306A CH216306DA CH216306A CH 216306 A CH216306 A CH 216306A CH 216306D A CH216306D A CH 216306DA CH 216306 A CH216306 A CH 216306A
- Authority
- CH
- Switzerland
- Prior art keywords
- heterocyclic compound
- preparation
- product
- new derivative
- reaction
- Prior art date
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Description
Verfahren zur Herstellung eines neuen Derivates einer heterocyelischen Verbindung. Es wurde gefunden, dass man zu einem neuen Derivat einer heterocyclischen Verbin dung gelangt, wenn man das Natriumsalz des sulfonierten Benzimidazols, das durch Kondensation von o-Phenylendiamin mit Kokosfettsäure und nachfolgende Sulfonie- rung erhalten wird, mit 1Vlonochloressigsäure- äthylester umsetzt,
auf das so erhaltene Re aktionsprodukt Diäthylanolamin einwirken lässt und das entstandene Umsetzungspro- dukt mit einer wässerigen Natriumhydrogyd- lösung behandelt.
Die Umsetzung mit dem Monochloressig- säureäthylester wind zweckmässig in der Wärme, vorteilhaft in Gegenwart eines Lö sungsmittels, vorgenommen.
Das "so erhaltene Produkt bildet nach dem Trocknen ein hellgefärbtes Pulver, .dessen wässerige Lösungen stark kapillaraktive Eigenschaften besitzen. Es kann als Tegtil- hilfsstoff verwendet werden.
<I>Beispiel:</I> 7 7 Gewichtsteile des Natriumsalzes des sulfonierten. Benzimidazols, das durch Kon densation von o-Phenylendiamin mit Kokos- fettsäure und nachfolgende Sulfonierung er halten wird,
und 26 Gewichtsteile Monochlor- essigsäureäthylester werden unter Rühren in 300 Volumteile Benzol eingetragen und die Mischung während 70 Stunden am Rückfluss- kühler auf Siedetemperatur erhitzt. Zum dünnflüssigen Reaktionsprodukt fügt man nun 22 Gewichtsteile Diäthanolamin und setzt das Erhitzen während weiteren 12 .Stun den fort.
Aus der resultierenden zähflüssigen Reaktionsmasse wird das Benzol unter ver- mindertem Druck abdestilliert. Der zurück bleibende, dunkelgefärbte und harzartige Rückstand ist in Wasser löslich, scheidet sich jedoch schon auf Zusatz einer geringen Säuremenge aus.
Man erhält ein in saurer Lösung bestän diges Produkt, indem man das Reaktionspro- dukt in warmem Wasser aufnimmt und nach Zusatz von 25 Gewichtsteilen 30 % iger Na triumhydroxydlösung kurz aufkocht. Aus der mit verdünnter Schwefelsäure neutralisierten Lösung erhält man durch Eindampfen ein hellgefärbtes Pulver, dessen wässerige Lö sungen stark kapillaraktive Eigenschaften besitzen.
Process for the preparation of a new derivative of a heterocyclic compound. It has been found that a new derivative of a heterocyclic compound is obtained if the sodium salt of sulfonated benzimidazole, which is obtained by condensation of o-phenylenediamine with coconut fatty acid and subsequent sulfonation, is reacted with ethyl monochloroacetate,
allows diethylanolamine to act on the reaction product obtained in this way and treats the resulting reaction product with an aqueous sodium hydrogen solution.
The reaction with the ethyl monochloroacetate is expediently carried out in the heat, advantageously in the presence of a solvent.
After drying, the product obtained in this way forms a light-colored powder, the aqueous solutions of which have strong capillary-active properties. It can be used as a Tegtil auxiliary.
<I> Example: </I> 7 7 parts by weight of the sodium salt of the sulfonated. Benzimidazole, which is obtained by condensation of o-phenylenediamine with coconut fatty acid and subsequent sulfonation,
and 26 parts by weight of ethyl monochloroacetate are introduced into 300 parts by volume of benzene with stirring and the mixture is heated to boiling temperature for 70 hours on a reflux condenser. 22 parts by weight of diethanolamine are now added to the low-viscosity reaction product and heating is continued for a further 12 hours.
The benzene is distilled off from the resulting viscous reaction mass under reduced pressure. The dark-colored, resin-like residue that remains is soluble in water, but separates out after only a small amount of acid is added.
A product which is stable in acidic solution is obtained by taking up the reaction product in warm water and, after adding 25 parts by weight of 30% sodium hydroxide solution, briefly boiling it. From the solution neutralized with dilute sulfuric acid, a light-colored powder is obtained by evaporation, the aqueous solutions of which have strong capillary-active properties.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH216306T | 1939-05-24 | ||
CH213253T | 1939-05-24 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH216306A true CH216306A (en) | 1941-08-15 |
Family
ID=25725394
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH216306D CH216306A (en) | 1939-05-24 | 1939-05-24 | Process for the preparation of a new derivative of a heterocyclic compound. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH216306A (en) |
-
1939
- 1939-05-24 CH CH216306D patent/CH216306A/en unknown
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