CH240164A - 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
- CH240164A CH240164A CH240164DA CH240164A CH 240164 A CH240164 A CH 240164A CH 240164D A CH240164D A CH 240164DA CH 240164 A CH240164 A CH 240164A
- Authority
- CH
- Switzerland
- Prior art keywords
- sep
- carboxylic acid
- phenyl
- propanol
- act
- 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-eycloalkyl-l-carbonsäure. Gegenstand des vorliegenden Zusatzpaten tes ist ein Verfahren zur Darstellung eines basischen Esters einer 1-Aryl-cycloalkyl-l- carbonsäure. Das Verfahren ist dadurch ge kennzeichnet, dass man y-Dimethylamino-pro- panol auf eine Verbindung der Formel
EMI0001.0008
worin X einen bei der Reaktion sich abspal tenden Rest bedeutet, gegebenenfalls in Ge genwart eines Kondensationsmittels, einwir ken lässt.
Der 1-(3'-Methyl-phenyl)-cyclopentyl-l- oarbonsäure - y - dimethylamino - propanolester bildet eine farblose Flüssigkeit vom Siede punkt 117-120 unter 0,09 mm, sein Hydro chlorid schmilzt bei 135-136 .
Die neue Verbindung soll therapeutische Verwendung finden. <I>Beispiel:</I> 20,4 Teile 1-(3'-Methyl-phenyl)-cyclopen- tyl-l-carbonsäure werden mit Thionylchlorid in üblicher Weise in das Säurechlorid über geführt und dieses in 200 Teilen absolutem Benzol gelöst. Unter Rühren tropft man eine Lösung von 10,3 Teilen y-Dimethylamino- propanol in 50 Teilen absolutem Benzol zu und erwärmt anschliessend 2 Stunden zum Sieden. Man schüttelt zweimal mit Wasser und einmal mit verdünnter Salzsäure aus.
Die vereinigten wässrigen Lösungen werden aus- geäthert, die Base mit Pottasche in Freiheit gesetzt und in Äther aufgenommen. Die ätherische Lösung wird mit Wasser gewa schen, über Pottasche getrocknet und das Lösungsmittel abdestilliert. Die neue" Ver bindung siedet bei 117-120 unter 0,09 mm.
An Stelle des Säurechlorids können auch andere Ilalobenide der 1-(3'-Methyl-phenyl)- cyölopentyl-1=earbonsäure, die Säure stelbst, 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 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 y-dimethylamino-propanol is applied to a compound of the formula
EMI0001.0008
where X is a radical which splits off during the reaction, optionally in the presence of a condensing agent, can be acted upon.
The 1- (3'-methyl-phenyl) -cyclopentyl-l-carboxylic acid - y - dimethylamino - propanol ester forms a colorless liquid with a boiling point of 117-120 below 0.09 mm, its hydrochloride melts at 135-136.
The new compound should find therapeutic use. <I> Example: </I> 20.4 parts of 1- (3'-methylphenyl) cyclopentyl-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 10.3 parts of γ-dimethylaminopropanol in 50 parts of absolute benzene 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 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 is distilled off. The new connection boils below 0.09 mm at 117-120.
Instead of the acid chloride, other ilalobenides of 1- (3'-methyl-phenyl) -cylopentyl-1-carboxylic acid, the acid itself, its ester or its anhydride can be used.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH240164T | 1942-12-16 | ||
CH234452T | 1944-03-20 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH240164A true CH240164A (en) | 1945-11-30 |
Family
ID=25727867
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH240164D CH240164A (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) | CH240164A (en) |
-
1942
- 1942-12-16 CH CH240164D patent/CH240164A/en unknown
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