CH245897A - Process for the preparation of a new imidazoline. - Google Patents
Process for the preparation of a new imidazoline.Info
- Publication number
- CH245897A CH245897A CH245897DA CH245897A CH 245897 A CH245897 A CH 245897A CH 245897D A CH245897D A CH 245897DA CH 245897 A CH245897 A CH 245897A
- Authority
- CH
- Switzerland
- Prior art keywords
- imidazoline
- phenyl
- hydrochloride
- preparation
- methoxy
- 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
Türfahren 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-Oxym-ethyl-imidazolins bezw. ein Salz die ses Esters mit N-Phenyl-4-methoxy-benzyl- amin umsetzt.
Das so erhaltene 2-[N-Phenyl-N-(4'- methoxy - benzyl) - aminomethyll - imidazolin bildet ein Hydrochlorid in Form von farb losen Kristallen, die bei 211 bis 212 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 Ary1sulfonsäure, und vorzugsweise in Form eines seiner Salze verwendet. Die Umsetzung kann in An- oder Abwesenheit von Verdün nungsmitteln und/oder Kondensationsmitteln durchgeführt werden.
<I>Beispiel:</I> 15,5 Teile 2 - Chlormethyl - imidazolin- hydrochlorid, 50 Teile N-Phenyl-4-methoxy- 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-Phenyl-4-methogy-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-Phenyl-N- (4' - methogy - benzyl) - aminomethyl] - imid- azolin-hydrochlorid in Form farbloser Kri stalle vom F. 211 bis 212 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 Toluolsulfosäureester, ausgehen. Ebenso lässt sich an Stelle des Hydrochlorids ein anderes Salz oder die freie Base ver wenden.
Door travel to manufacture a new imidazoline. The subject matter 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 is respectively. a salt this ester reacts with N-phenyl-4-methoxy-benzylamine.
The 2- [N-phenyl-N- (4'-methoxy - benzyl) - aminomethyll - imidazoline obtained in this way forms a hydrochloride in the form of colorless crystals that melt at 211 to 212. 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 Ary1sulfonsäure, 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 condensing agents.
<I> Example: </I> 15.5 parts of 2 - chloromethyl - imidazoline hydrochloride, 50 parts of N-phenyl-4-methoxy-benzylamine and. 50 parts of alcohol are used during. Heated for a few hours to 90 to 105 in an 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-phenyl-4-methogy-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-phenyl-N- (4 '- methogy - benzyl) - aminomethyl] - imidazoline hydrochloride precipitates in the form of colorless crystals with a melting point of 211 to 212.
Instead of chloromethyl - imidazoline hydrochloride, you can use another reactive ester of 2 - oxymethyl imidazoline, such as. B. from the hydrobromic acid or toluenesulfonic acid ester, proceed. Another salt or the free base can also be used instead of the hydrochloride.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH242839T | 1944-03-23 | ||
CH245897T | 1944-03-23 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH245897A true CH245897A (en) | 1946-11-30 |
Family
ID=25728745
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH245897D CH245897A (en) | 1944-03-23 | 1944-03-23 | Process for the preparation of a new imidazoline. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH245897A (en) |
-
1944
- 1944-03-23 CH CH245897D patent/CH245897A/en unknown
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