CH245890A - Process for the preparation of a new imidazoline. - Google Patents
Process for the preparation of a new imidazoline.Info
- Publication number
- CH245890A CH245890A CH245890DA CH245890A CH 245890 A CH245890 A CH 245890A CH 245890D A CH245890D A CH 245890DA CH 245890 A CH245890 A CH 245890A
- Authority
- CH
- Switzerland
- Prior art keywords
- imidazoline
- hydrochloride
- preparation
- new
- ester
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D233/00—Heterocyclic compounds containing 1,3-diazole or hydrogenated 1,3-diazole rings, not condensed with other rings
- C07D233/04—Heterocyclic compounds containing 1,3-diazole or hydrogenated 1,3-diazole rings, not condensed with other rings having one double bond between ring members or between a ring member and a non-ring member
- C07D233/20—Heterocyclic compounds containing 1,3-diazole or hydrogenated 1,3-diazole rings, not condensed with other rings having one double bond between ring members or between a ring member and a non-ring member with substituted hydrocarbon radicals, directly attached to ring carbon atoms
- C07D233/24—Radicals substituted by nitrogen atoms not forming part of a nitro radical
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
Description
Verfahren zur Herstellung eines neuen Imidazolins. Gegenstand des vorliegenden Patentes ist ein Verfahren zur Herstellung eines neuen Imidazolins, das dadurch gekennzeichnet ist, dass man einen reaktionsfähigen Ester des 2-Oxymethyl-imidazolins bezw. ein Salz die ses Esters mit N-(2-Äthoxyphenyl)-benzyl- amin umsetzt.
Das so erhaltene 2 - [N - (2' - Äthoxy- phenyl) - N - benzyl - aminomethyl] -imidazolin bildet ein Hydrochlorid in Form von farb losen Kristallen, die bei 187 bis 188 schmel zen. Es soll pharmazeutische Verwendung finden oder als Zwischenprodukt zur Her stellung von Heilmitteln dienen.
Als reaktionsfähiger Ester des 2-Ogy- methyl-imidazolins wird insbesondere ein solcher mit einer starken anorganischen oder organischen Säure, wie z. B. einer Halogen wasserstoffsäure sowie einer Alkyl- oder Arylsulfonsäure und vorzugsweise in Form eines seiner Salze verwendet. Die Umset zung kann in An- oder Abwesenheit von Verdünnungsmitteln und/oder Kondensations mitteln durchgeführt werden.
<I>Beispiel:</I> 15,5 Teile 2-Chlormethyl-imidazolin- hydrochlorid, 50 Teile N-(2-Äthoxy-phenyl)- benzylamin und 50 Teile Alkohol werden während einigen Stunden auf 90 bis 105 in einem 'Ölbad erhitzt. Sodann wird der Al kohol abdestilliert und der Rückstand mit einer wässrigen Lösung von 8,4 Teilen Na- triumbicarbonat oder mit der entsprechenden Menge Ammoniak verrieben.
Das unver brauchte N- (2-Äthoxy-phenyl) -benzylamin wird mit einem Lösungsmittel, wie Äther, Benzol oder Toluol, ausgezogen, die wässrige Schicht mit wenig verdünnter Salzsäure neu tralisiert und zum Sieden erhitzt. Beim Ab kühlen der Lösung fällt das 2-[N-(2'-Äthoxy- phenyl) - N - benzyl-aminomethyl] -imidazol in hydrochlorid in Form farbloser Kristalle vom F. 187 bis 188 aus.
An Stelle von Chlormethyl-imidazolin- hydrochlorid kann man von einem andern reaktionsfähigen Ester des 2 - Oxymethyl- imidazolins, wie z. B. vom Bromwasserstoff- säure- oder Toluolsulfosäure-ester, ausgehen. Ebenso lässt sich an Stelle des Hydrochlorids ein anderes Salz. oder die freie Base ver wenden.
Process for the preparation of a new imidazoline. The subject of the present patent is a process for the preparation of a new imidazoline, which is characterized in that a reactive ester of 2-oxymethyl-imidazoline BEZW. a salt that reacts this ester with N- (2-ethoxyphenyl) benzyl amine.
The 2 - [N - (2 '- ethoxyphenyl) - N - benzyl - aminomethyl] imidazoline thus obtained forms a hydrochloride in the form of colorless crystals which melt at 187 to 188. It should find pharmaceutical use or serve as an intermediate for the manufacture of medicinal products.
The reactive ester of 2-ogymethyl-imidazoline is in particular one with a strong inorganic or organic acid, such as. B. a halogenated hydrochloric acid and an alkyl or aryl sulfonic acid and preferably used in the form of one of its salts. The implementation can be carried out in the presence or absence of diluents and / or condensation agents.
<I> Example: </I> 15.5 parts of 2-chloromethyl-imidazoline hydrochloride, 50 parts of N- (2-ethoxy-phenyl) -benzylamine and 50 parts of alcohol are heated to 90-105 in an oil bath for a few hours heated. The alcohol is then distilled off and the residue is triturated with an aqueous solution of 8.4 parts of sodium bicarbonate or with the appropriate amount of ammonia.
The unused N- (2-ethoxy-phenyl) -benzylamine is extracted with a solvent such as ether, benzene or toluene, the aqueous layer is neutralized with a little dilute hydrochloric acid and heated to the boil. When the solution cools, the 2- [N- (2'-ethoxyphenyl) -N-benzyl-aminomethyl] -imidazole precipitates in hydrochloride in the form of colorless crystals with a melting point of 187 to 188.
Instead of chloromethyl imidazoline hydrochloride one can use another reactive ester of 2 - oxymethyl imidazoline, such as. B. from the hydrobromic acid or toluenesulfonic acid ester. Another salt can also be used in place of the hydrochloride. or use the free base.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH245890T | 1944-03-23 | ||
CH242839T | 1944-03-23 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH245890A true CH245890A (en) | 1946-11-30 |
Family
ID=25728738
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH245890D CH245890A (en) | 1944-03-23 | 1944-03-23 | Process for the preparation of a new imidazoline. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH245890A (en) |
-
1944
- 1944-03-23 CH CH245890D patent/CH245890A/en unknown
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