CH245893A - Process for the preparation of a new imidazoline. - Google Patents
Process for the preparation of a new imidazoline.Info
- Publication number
- CH245893A CH245893A CH245893DA CH245893A CH 245893 A CH245893 A CH 245893A CH 245893D A CH245893D A CH 245893DA CH 245893 A CH245893 A CH 245893A
- Authority
- CH
- Switzerland
- Prior art keywords
- imidazoline
- preparation
- hydrochloride
- 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)
- Nitrogen Condensed Heterocyclic Rings (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-(y-Oxypropyl)-imidazolins bezw. ein Salz dieses Esters mit N-Phenyl-benzylamin um setzt.
Das so erhaltene 2-(N-Phenyl-N-benzyl- aminopropyl)-imidazolin bildet ein Hydro- chlorid in Form von farblosen Kristallen, die bei 193 bis 195 schmelzen. Es soll pharma zeutische Verwendung finden oder als Zwi schenprodukt zur Herstellung von Heilmit teln dienen.
Als reaktionsfähiger Ester des 2-(y-Oxy- propyl)-imidazolins wird insbesondere ein solcher mit einer starken anorganischen oder organischen Säure, wie z. B. einer Halogen wa.sserstoffsäure sowie einer Alkyl- oder Arylsulfonsäure, und vorzugsweise in Form eines seiner Salze verwendet.
Die Umsetzung kann in An- oder Abwesenheit von Verdiin- nungsmitteln und/oder Kondensationsmitteln durchgeführt werden. <I>Beispiel:</I> 18,3 Teile 2-(y-Chlorpropyl)-imidazolin- hydrochlorid, 45,8 Teile N-Phenyl-benzyl- amin und 50 Teile Butylalkohol werden während einigen Stunden auf 90 bis 105 ir_ einem Ölbad erhitzt.
Sodann wird .der Alkohol abdestilliert und der Rückstand mit einer wässrigen Lösung von 8,4 Teilen Na- ti-iumbicarbonat oder mit der entsprechenden Menge Ammoniak verrieben. Das unver brauchte N - P'henyl-benzylamin wird mit einem Lösungsmittel, wie Äther, Benzol oder Toluol, ausgezogen, die wäss.rige Schicht mit wenig verdünnter Salzsäure neutralisiert und zum Sieden erhitzt.
Beim Abkühlen der Lö sung fällt da.s 2-(N-Phenyl-N-benzyl-amino- propyl) - imidazolin - hydrochlorid in Form farbloser Kristalle vom F. 193 bis 195 aus.
An Stelle von Chlorpropyl-imidazolin- hydrochlorid kann man von einem andern reaktionsfähigen Ester des 2-(y-Oxypropyl- imidazolins, wie z. B. vom Bromwasserstoff säure- oder Toluolsulfosäureester, 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 present patent is a process for the preparation of a new imidazoline, which is characterized in that a reactive ester of 2- (γ-oxypropyl) imidazoline BEZW. a salt of this ester with N-phenyl-benzylamine sets.
The 2- (N-phenyl-N-benzylaminopropyl) imidazoline obtained in this way forms a hydrochloride in the form of colorless crystals that melt at 193-195. It should be used pharmaceutical or as an inter mediate product for the production of Heilmit items.
As a reactive ester of 2- (γ-oxy-propyl) -imidazoline is in particular one with a strong inorganic or organic acid, such as. B. a halogen hydrogen acid and an alkyl or aryl sulfonic acid, and preferably used in the form of one of its salts.
The reaction can be carried out in the presence or absence of diluents and / or condensation agents. <I> Example: </I> 18.3 parts of 2- (γ-chloropropyl) imidazoline hydrochloride, 45.8 parts of N-phenylbenzylamine and 50 parts of butyl alcohol are brought to 90 to 105 parts for a few hours Heated oil bath.
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-phenylbenzylamine 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-phenyl-N-benzylamino-propyl) -imidazoline-hydrochloride precipitates in the form of colorless crystals with a melting point of 193-195.
Instead of chloropropylimidazoline hydrochloride one can start from another reactive ester of 2- (γ-oxypropylimidazoline, such as, for example, the hydrobromic acid or toluenesulfonic acid ester. Likewise, another salt or can be used instead of the hydrochloride use the free base.
Claims (1)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH245893T | 1944-03-23 | ||
| CH242839T | 1944-03-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH245893A true CH245893A (en) | 1946-11-30 |
Family
ID=25728741
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH245893D CH245893A (en) | 1944-03-23 | 1944-03-23 | Process for the preparation of a new imidazoline. |
Country Status (1)
| Country | Link |
|---|---|
| CH (1) | CH245893A (en) |
-
1944
- 1944-03-23 CH CH245893D patent/CH245893A/en unknown
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