CH240161A - 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
- CH240161A CH240161A CH240161DA CH240161A CH 240161 A CH240161 A CH 240161A CH 240161D A CH240161D A CH 240161DA CH 240161 A CH240161 A CH 240161A
- Authority
- CH
- Switzerland
- Prior art keywords
- sep
- marked
- phenyl
- carboxylic acid
- cyclopentyl
- Prior art date
Links
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- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
Description
Verfahren zur Darstellung eines basischen Esters einer 1-Aryl-cycloalkyl-l-earbonsänre. Gegenstand des vorliegenden Zusatzpaten- tes ist ein Verfahren zur Darstellung eines basischen Esters einer 1-Aryl-cycJoalkyl-l- carbonsäure. Das Verfahren ist dadurch ge- kennzeichnet,
dass man Dimethylaminoätha- nol auf eine Verbindung der Formel
EMI0001.0015
worin X einen bei der Reaktion sich abspal tenden Rest bedeutet, gegebenenfalls in Ge genwart eines Kondensationsmittels; einwir ken lässt. Der 1-Phenyl-cyclopentyl-l-carbonsäure- dimethylaminoäthano,l-ester bildet eine farb lose Flüssigkeit vom Siedepunkt 114-115 unter 0,15 mm.
Die neue Verbindung soll therapeutische Verwendung finden. <I>Beispiel:</I> 19 Teile 1-Phenyl-.oyclapentyl-l-carbon- säure werden mit Thionylchlorid in üblicher Weise in das Säurechlorid übergeführt und dieses in 200 Teilen absolutem Benzol gelöst. Unter Rühren tropft man eine Lösung von 8,
9 Teilen Dimethydaminoäth@auol in 50 Tei len absolutem Benzol zu und erwärmt an schliessend 2 Stunden zum Sieden. Man schüttelt zweimal mit Wasser und einmal mit verdünnter Salzsäure aus.
Die vereinigten wässrigen Lösungen werden, ausgeäthert, dne Base mit Pottasche in Freiheit gesetzt und in Äther aufgenommen. Die ätherische Lösung wird mit Wasser gewaschen,
über Pottasche getrocknet und das Lösungsmittel abdestil- liert. Die neue Verbindung siedet bei 114 biss 115 unter 0,15 mm.
An Stelle des Säurechlorids können auch andere Halogenide der 1-Phenyl-cyclopentyl- 1-carbonsäure, die Säure selbst, ihre Ester oder ihr Anhydrid verwendet werden.
Process for the preparation of a basic ester of a 1-aryl-cycloalkyl-1-carboxylic acid. The subject matter of the present additional patent is a process for the preparation of a basic ester of a 1-aryl-cycloalkyl-1-carboxylic acid. The procedure is characterized by
that you dimethylaminoethanol on a compound of the formula
EMI0001.0015
where X is a radical which splits off during the reaction, optionally in the presence of a condensing agent; has an effect. The 1-phenyl-cyclopentyl-l-carboxylic acid dimethylaminoethano, l-ester forms a colorless liquid with a boiling point of 114-115 below 0.15 mm.
The new compound should find therapeutic use. <I> Example: </I> 19 parts of 1-phenyl-.oyclapentyl-1-carboxylic acid are converted into the acid chloride with thionyl chloride in the usual way and this is dissolved in 200 parts of absolute benzene. A solution of 8 is added dropwise while stirring
9 parts of dimethydaminoeth @ auol in 50 parts of absolute benzene and 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 etherified, the base is set free with potash and taken up in ether. The ethereal solution is washed with water,
dried over potash and the solvent was distilled off. The new compound boils below 0.15 mm at 114 to 115.
Instead of the acid chloride, it is also possible to use other halides of 1-phenyl-cyclopentyl-1-carboxylic acid, the acid itself, its esters or its anhydride.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH240161T | 1942-12-16 | ||
CH234452T | 1944-03-20 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH240161A true CH240161A (en) | 1945-11-30 |
Family
ID=25727864
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH240161D CH240161A (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) | CH240161A (en) |
-
1942
- 1942-12-16 CH CH240161D patent/CH240161A/en unknown
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