CH165037A - Process for the preparation of a new sulfonic acid. - Google Patents
Process for the preparation of a new sulfonic acid.Info
- Publication number
- CH165037A CH165037A CH165037DA CH165037A CH 165037 A CH165037 A CH 165037A CH 165037D A CH165037D A CH 165037DA CH 165037 A CH165037 A CH 165037A
- Authority
- CH
- Switzerland
- Prior art keywords
- sulfonic acid
- mixture
- new sulfonic
- preparation
- parts
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D235/00—Heterocyclic compounds containing 1,3-diazole or hydrogenated 1,3-diazole rings, condensed with other rings
- C07D235/02—Heterocyclic compounds containing 1,3-diazole or hydrogenated 1,3-diazole rings, condensed with other rings condensed with carbocyclic rings or ring systems
- C07D235/04—Benzimidazoles; Hydrogenated benzimidazoles
- C07D235/06—Benzimidazoles; Hydrogenated benzimidazoles with only hydrogen atoms, hydrocarbon or substituted hydrocarbon radicals, directly attached in position 2
- C07D235/08—Radicals containing only hydrogen and carbon atoms
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
Verfahren zur Herstellung einer neuen Sulfonsäure. Es wurde gefunden, dass man eine neue Sulfonsäui-e erhält, wenn man das Imidazol- gemisch, das entsteht durch Kondensieren von o-Plrenylendiamin mit dem technischen Gemisch der Stearin- und Palmitinsäure, wie es aus Rindertalg gewonnen wird, mit er schöpfend berrzylierend und hierauf mit sul- fierend wirkenden Mitteln behandelt.
Die neue Sulfonsäure bildet in Form ihrer Alkalisalze ein kaum gefärbtes Pulver mit ausgesprochen seifenartigen Eigenschaf ten. Sie soll als Hilfsstoff in der Textil industrie verwendet werden.
<I>Beispiel:</I> Man stellt ein Gemisch von Pentadecyl- und Heptadecylbenzimidazol durch Erhitzen von 100 Teilen des technischen Gemisches von Stearin-Palmitinsäure, wie es aus Rin dertalg gewonnen wird, mit 41 Teilen o-Phe- nylendiamin her, das man auf 140-120 abkühlen lässt, worauf man allmählich 46 Teile Benzylchlorid hinzufügt.
241 Teile des so hergestellten Gemisches der benzylierten Benzimidazolchlorhydrate werden bei 120-125 geschmolzen. Hierauf gibt man unter Rühren in die Schmelze all mählich $0 Teile fein pulverisierte Soda und, nachdem die Kohlensäureentwicklung nach gelassen hat, 70 Teile Benzylchlorid. Das Gemisch wird sodann 6-10 Stunden bei 125 gerührt und erkalten gelassen.
Zur Reinigung des erhaltenen Produktes wird das Rohprodukt zur Entfernung der Soda und der übrigen anorganischen Bestand teile in geschmolzenem Zustande filtriert und das erstarrte Filtrat zur Entfernung eventuell noch vorhandener Ausgangsmaterialien mit organischen Lösungsmitteln, wie zum Beispiel Benzol, extrahiert.
Man erhält auf diese Weise die quaternären Ammoniumsalze der benzy- lierten Benzimidazole der Formel
EMI0002.0001
in welcher an Stelle von Ri Heptadecyl- und Pentadecylreste zu setzen sind, als farb loses, kristallinisches Pulver, das in heissem Wasser unter Bildung stark schäumender Lösungen löslich ist.
20 Teile des so erhaltenen Produktes werden bei 0-5 0 mit 20 Teilen Schwefel säuremonohydrat verrührt. Zu diesem Ge misch werden sodann 20 Teile Oleum (60 bis 65 % SOs) unter sorgfältiger Kühlung ein- getragen, worauf noch während einer Stunde bei 0 0 weiter gerührt wird. Sobald sich eine in Wasser gelöste Probe auf Zusatz von Alkali nicht mehr trübt, giesst man das Re- aktionsgemisch auf Eis, neutralisiert mit Natronlauge und dampft die Lösung zur Trockne ein.
Process for the preparation of a new sulfonic acid. It has been found that a new sulfonic acid is obtained if the imidazole mixture, which is formed by condensing o-plrenylenediamine with the technical mixture of stearic and palmitic acid, such as is obtained from beef tallow, is berrzylating and scooping then treated with sulphurous agents.
In the form of its alkali salts, the new sulfonic acid forms a hardly colored powder with pronounced soap-like properties. It is intended to be used as an auxiliary in the textile industry.
<I> Example: </I> A mixture of pentadecylbenzimidazole and heptadecylbenzimidazole is prepared by heating 100 parts of the technical mixture of stearic-palmitic acid, as it is obtained from bark tallow, with 41 parts of o-phenylenediamine, the allowed to cool to 140-120, whereupon 46 parts of benzyl chloride are gradually added.
241 parts of the mixture of benzylated benzimidazole chlorohydrates thus prepared are melted at 120-125. Then, while stirring, gradually add 0 parts of finely powdered soda and, after the evolution of carbonic acid has subsided, 70 parts of benzyl chloride. The mixture is then stirred for 6-10 hours at 125 and allowed to cool.
To purify the product obtained, the crude product is filtered in the molten state to remove the soda and the other inorganic constituents and the solidified filtrate is extracted with organic solvents, such as benzene, to remove any starting materials that may still be present.
In this way the quaternary ammonium salts of the benzylated benzimidazoles of the formula are obtained
EMI0002.0001
in which heptadecyl and pentadecyl radicals are to be used in place of Ri, as a colorless, crystalline powder that is soluble in hot water with the formation of strongly foaming solutions.
20 parts of the product thus obtained are stirred acid monohydrate at 0-5 0 with 20 parts of sulfur. 20 parts of oleum (60 to 65% SO 3) are then introduced into this mixture with careful cooling, and stirring is continued for a further hour at 0 °. As soon as a sample dissolved in water no longer becomes cloudy due to the addition of alkali, the reaction mixture is poured onto ice, neutralized with sodium hydroxide solution and the solution is evaporated to dryness.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH165037T | 1932-07-29 | ||
CH163274T | 1937-01-14 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH165037A true CH165037A (en) | 1933-10-31 |
Family
ID=25717727
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH165037D CH165037A (en) | 1932-07-29 | 1932-07-29 | Process for the preparation of a new sulfonic acid. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH165037A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE744281C (en) * | 1938-11-04 | 1944-01-18 | Phil Habil August Chwala Dipl | Process for the production of imidazoline-N-alkyl- or -oxyalkylsulfonic acids |
-
1932
- 1932-07-29 CH CH165037D patent/CH165037A/en unknown
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE744281C (en) * | 1938-11-04 | 1944-01-18 | Phil Habil August Chwala Dipl | Process for the production of imidazoline-N-alkyl- or -oxyalkylsulfonic acids |
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