CH240166A - Process for the preparation of a basic ester of a 1-aryl-cycloalkyl-1-carboxylic acid. - Google Patents
Process for the preparation of a basic ester of a 1-aryl-cycloalkyl-1-carboxylic acid.Info
- Publication number
- CH240166A CH240166A CH240166DA CH240166A CH 240166 A CH240166 A CH 240166A CH 240166D A CH240166D A CH 240166DA CH 240166 A CH240166 A CH 240166A
- Authority
- CH
- Switzerland
- Prior art keywords
- sep
- carboxylic acid
- dimethyl
- phenyl
- marked
- Prior art date
Links
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
Verfahren zur Darstellung eines basischen Esters einer 1-Aryl-cycloalhyl-l-carbonsäure. Gegenstand des vorliegenden Zusatzpaten- tes ist ein Verfahren zur Darstellung eines basischen Esters einer 1-Aryl-cycloalkyl-l- earbonsäure. Dass Verfahren ist dadurch ge kennzeichnet, dass man Diäthyäaminoäthanol auf eine Verbind=ig,
der Formel
EMI0001.0016
worin X einen bei der Reaktion sich abapal- tenden Rest bedeutet, gegebenenfalls in Ge- genwart eines Kondensationsmittels, einwir ken lässt.
Der 1-(3',4'-Dimethyl-phenyl)-cyclopen- tyl -1-carbonsäure - tdiäthylaminoäthanolester bildet eine farblose Flüssigkeit vom Siede punkt 126-128 unter 0,05 mm, sein Hydro chlorid sohmiilzt bei 170-171 .
Die neue Verbindung sohl therapeutische Verwendung finden. <I>'</I> Beispiel: 21,8 Teile 1-(3',4'-Dimethyl-phenyl)-cyclo- pentyl-l-carbonsäure werden mit Thionyl- chlorid in üblicher Weise in das Säurechlorid übergeführt und dieses in 200 Teilen absolu tem Benzol gelöst.
Unter Rühren tropft man eine Lösung von 11,7 Teilen Diäthylamino- äthanal in 50 Teilen absolutem Benzol zu und erwärmt anschliessend 2 Stunden zum Sieden. Man schüttelt zweimal mit Wasser und ein mal mit verdünnter .Salzsäure aus.
Die ver- einigten wässrigen Lösungen werden ausge- äthert, die Base mit Pottasche in Freiheit ge setzt und in Äther aufgenommen. Die äthe rische Lösung wird mit Wasser gewaschen, über Pottasche getrocknet und das Lösungs- mitted abdestilliert. Die neue Verbindung sie det bei 126-128 unter 0,05 mm.
An Stelle des Säurechlorids können auch andere Halogenide .der 1-(3',4'-Dimethyl-phe- nyl)-cyclopentyl-l-carbonsäure, die Säure selbst, ihre Ester oder ihr Anhydrid verwen det vrerden.
Process for the preparation of a basic ester of a 1-aryl-cycloalhyl-1-carboxylic acid. The subject of the present additional patent is a process for the preparation of a basic ester of a 1-aryl-cycloalkyl-1-carboxylic acid. The method is characterized by the fact that diethyäaminoethanol is based on a compound,
the formula
EMI0001.0016
where X denotes a radical which is split off during the reaction, optionally in the presence of a condensing agent, can act.
The 1- (3 ', 4'-dimethyl-phenyl) -cyclopentyl-1-carboxylic acid-diethylaminoethanol ester forms a colorless liquid with a boiling point of 126-128 below 0.05 mm, its hydrochloride melts at 170-171.
The new compound should find therapeutic use. <I> '</I> Example: 21.8 parts of 1- (3', 4'-dimethyl-phenyl) -cyclopentyl-1-carboxylic acid are converted into the acid chloride in the usual way with thionyl chloride and this is converted into Dissolved 200 parts of absolute benzene.
A solution of 11.7 parts of diethylaminoethanol in 50 parts of absolute benzene is added dropwise with stirring and the mixture is then heated to the boil for 2 hours. It is extracted twice with water and once with dilute hydrochloric acid.
The combined aqueous solutions are extracted with ether, the base is released with potash and absorbed in ether. The ethereal solution is washed with water, dried over potash and the solvent is distilled off. The new connection is below 0.05 mm at 126-128.
Instead of the acid chloride, other halides of 1- (3 ', 4'-dimethylphenyl) -cyclopentyl-1-carboxylic acid, the acid itself, its esters or its anhydride can also be used.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH240166T | 1942-12-16 | ||
CH234452T | 1944-03-20 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH240166A true CH240166A (en) | 1945-11-30 |
Family
ID=25727869
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH240166D CH240166A (en) | 1942-12-16 | 1942-12-16 | Process for the preparation of a basic ester of a 1-aryl-cycloalkyl-1-carboxylic acid. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH240166A (en) |
-
1942
- 1942-12-16 CH CH240166D patent/CH240166A/en unknown
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