CH240168A - 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
- CH240168A CH240168A CH240168DA CH240168A CH 240168 A CH240168 A CH 240168A CH 240168D A CH240168D A CH 240168DA CH 240168 A CH240168 A CH 240168A
- Authority
- CH
- Switzerland
- Prior art keywords
- carboxylic acid
- phenyl
- act
- methyl
- allowed
- Prior art date
Links
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- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
Verfahren zur Darstellung eines basischen Esters einer 1-Aryl-eyeloalkyl-l-earbonsäure. Gegenstand des vorliegenden Zusatzpaten tes isst ein Verfahren zur Darstellung eines basischen Esters einer 1-Aryl-cycloalkyl-l- carbonsäure. Das Verfahren ist dadurch ge kennzeichnet, dass man Diäthylaminoäthanol auf eine Verbindung der (Formel
EMI0001.0011
worin X einen bei der Reaktion sich abspal tenden Rest bedeutet,
gegebenenfalls in Ge genwart eines Kondensationsmittels, einwir ken -lässt.
Der :1-(2'-1VIethyl-phenyl)-cyclopentyl-l- carbonsäure-diäthylaminoäthano!lester bildet eine farblose Flüssigkeit vom Siedepunkt 119-1.20 unter 0,05 mm, sein Hydrochlorid schmilzt bei 173-174 .
Die neue Verbindung soll therapeutische Verwendung finden. <I>Beispiel:</I> 20,4 Teile 1-(2'-Methyl-phenyl)-cyclopen- tyl-l=carbonsäure werden mit Thionylchlorid in üblicher Weise in das Säurechlorid überge führt und dieses in 200 Teilen absolutem Ben- zo,1 gelöst. Unter Rühren tropft man eine Lö sung von 11,7 Teilen Diäthylaminoäthanol in 50 Teilen absolutem Benzal zu und erwärmt anschliessend 2 Stunden zum Sieden.
Man schütfielt zweimal mit Wasser und einmal mit verdünnter Salzsäure aus. Die vereinigten wässrigen Lösungen werden ausgeäthert, die Base mit Pottasche in Freiheit gesetzt und in Äther aufgenommen. Die ätherische Lösung wird mit Wasser gewaschen, über Pottasche getrocknet und das Lösungsknittel abdestil- liert. Die neue Verbindung siedet bei<B>119</B> bis 120 unter 0,05 mm.
An Stelle des Säurechlorids können auch andere Ilalogenide,der 1-(2'-Me@thyl-phenyl)- cyclopentyl-l-ca.rbonsäure, die Säure selbst, ihre Ester oder ihr Anhydrid verwendet werden.
Process for the preparation of a basic ester of a 1-aryl-eyeloalkyl-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 process is characterized in that diethylaminoethanol is based on a compound of the formula
EMI0001.0011
where X is a residue that splits off during the reaction,
if necessary, in the presence of a condensing agent.
The: 1- (2'-1VIethyl-phenyl) -cyclopentyl-1-carboxylic acid diethylaminoethanol ester forms a colorless liquid with a boiling point of 119-1.20 below 0.05 mm; its hydrochloride melts at 173-174.
The new compound should find therapeutic use. <I> Example: </I> 20.4 parts of 1- (2'-methyl-phenyl) -cyclopentyl-l = carboxylic acid are converted into the acid chloride in the usual way with thionyl chloride and this is converted into 200 parts of absolute ben- zo, 1 solved. A solution of 11.7 parts of diethylaminoethanol in 50 parts of absolute benzal is added dropwise with stirring and the mixture is then heated to boiling 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 taken up in ether. The ethereal solution is washed with water, dried over potash and the solvent is distilled off. The new compound boils below 0.05 mm at <B> 119 </B> to 120.
Instead of the acid chloride, it is also possible to use other ilalogenides, 1- (2'-methyl-phenyl) -cyclopentyl-1-carboxylic acid, the acid itself, its ester or its anhydride.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH240168T | 1942-12-16 | ||
CH234452T | 1944-03-20 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH240168A true CH240168A (en) | 1945-11-30 |
Family
ID=25727871
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH240168D CH240168A (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) | CH240168A (en) |
-
1942
- 1942-12-16 CH CH240168D patent/CH240168A/en unknown
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