CH179698A - Process for the preparation of mandelic acid-2,2-dimethyl-3-diethylaminopropanol ester. - Google Patents
Process for the preparation of mandelic acid-2,2-dimethyl-3-diethylaminopropanol ester.Info
- Publication number
- CH179698A CH179698A CH179698DA CH179698A CH 179698 A CH179698 A CH 179698A CH 179698D A CH179698D A CH 179698DA CH 179698 A CH179698 A CH 179698A
- Authority
- CH
- Switzerland
- Prior art keywords
- ester
- dimethyl
- mandelic acid
- preparation
- diethylaminopropanol
- Prior art date
Links
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
Verfahren zur Darstellung von 3landelsäure-2,2-dimethyl-3-diäthylaminopropanolester. Die Ester vor) Aminoalkoholen der all gemeinen Formel
EMI0001.0003
wobei R ein Alkyl und R' ein Alkyl oder Wasserstoff bedeutet, mit aromatischen Säu ren sind sehr stark wirksame Lokalanästhe- tica.
Es wurde nun gefunden, dass in den fett aromatischen Estern dieser Aminoalkohole die lokalanästhetische Wirkung fast völlig zurücktritt, dass ihnen aber statt dessen eine ausserordentlich starke krampflösende Wir kung zukommt, die bei einzelnen Gliedern die Wirkung des Papaverins erheblich über- trifft.
Die als Ausgangsstoffe dienenden Amino- alkohole können aus den nach den Ver fahren der Patentschriften 147156, 151127 bis 151130, 152134 und 151135 erhaltenen Aminoaldehyden durch Reduktion mit Na triumamalgam in schwach essigsaurer Lösung gewonnen werden.
Gegenstand der vorliegenden Erfindung ist ein Verfahren zur Darstellung von Man delsäure - 2,2 - dimethyl - 3 - diäthylaminopro- panolester, welches dadurch gekennzeichnet ist, dass man auf 2,2-Dimethyl-3-diäthyl- aminopropylhalogenide ein Salz der Mandel säure einwirken lässt.
Die bisher unbekannten Halogenverbin dungen des 2,2-Dimethyl-3-diäthylamirropro- panols entstehen leicht und in guter Ausbeute bei der Einwirkung der üblichen Halogenie- rungsmittel, wie zum Beispiel Thionylchlorid. Es sind farblose, im Vakuum unzersetzt destillierbare Öle, die mit den Halogen wasserstoffsäuren feste Salze bilden.
Der Maridelsäure-2,2-dimethyl-3-diäthyl- aminoppopanolester bildet feine Kristalle vom Schmelzpunkt 67 . Seine Salze mit Mineral säuren sind leicht löslich in Wasser. Der Ester soll als Arzneimittel Verwendung finden. <I>Beispiel</I> 19 Teile mandelsaures Kalium gibt man zu einer Lösung von 15 Teilen 2,2-Dimethyl- 3-diäthylaminopropylchlorid in 100 Teilen gylol und erhitzt unter Rühren 10 Stunden auf<B>110'.</B> Nach dem Erkalten rührt man die Lösung mit Wasser und Säure aus, trennt die wässerige Schicht ab und fällt durch Zusatz von Lauge den gebildeten Ester aus.
Durch Aufnehmen in Äther, Trocknen mit entwässertem Natriumsulfat und Einengen der filtrierten Lösung auf ein kleines Volumen gewinnt man den Mandelsäure-2,2-dimethyl- ss--diäthylaminopropanolester in Form feiner Kristalle.
Process for the preparation of 3landelic acid-2,2-dimethyl-3-diethylaminopropanol ester. The esters before) amino alcohols of the general formula
EMI0001.0003
where R is alkyl and R 'is alkyl or hydrogen, with aromatic acids are very effective local anesthetics.
It has now been found that in the fatty aromatic esters of these amino alcohols the local anesthetic effect disappears almost completely, but that instead they have an extraordinarily strong antispasmodic effect, which considerably exceeds the effect of papaverine in individual limbs.
The amino alcohols used as starting materials can be obtained from the amino aldehydes obtained by the process of patents 147156, 151127 to 151130, 152134 and 151135 by reduction with sodium amalgam in a weakly acetic acid solution.
The present invention relates to a process for the preparation of almond acid - 2,2 - dimethyl - 3 - diethylaminopro- panol ester, which is characterized in that a salt of almond acid is acted on 2,2-dimethyl-3-diethyl aminopropyl halide leaves.
The hitherto unknown halogen compounds of 2,2-dimethyl-3-diethylamirropropanol are formed easily and in good yield when exposed to the usual halogenating agents, such as thionyl chloride. They are colorless oils that can be distilled in a vacuum without decomposing and that form solid salts with the hydrogen halide.
The 2,2-dimethyl-3-diethyl aminopopanol ester of maridelic acid forms fine crystals with a melting point of 67. Its salts with mineral acids are easily soluble in water. The ester is said to be used as a drug. <I> Example </I> 19 parts of almond-acid potassium are added to a solution of 15 parts of 2,2-dimethyl-3-diethylaminopropyl chloride in 100 parts of glycol and the mixture is heated to 110 ° for 10 hours while stirring After cooling, the solution is stirred with water and acid, the aqueous layer is separated off and the ester formed is precipitated by adding alkali.
By taking up in ether, drying with dehydrated sodium sulphate and concentrating the filtered solution to a small volume, the mandelic acid 2,2-dimethyl-ss-diethylaminopropanol ester is obtained in the form of fine crystals.
Claims (1)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE139454X | 1932-03-22 | ||
DEH136773D DE594085C (en) | 1932-03-22 | 1933-07-07 | Process for the production of basic esters of fatty acids |
CH174811T | 1934-02-06 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH179698A true CH179698A (en) | 1935-09-15 |
Family
ID=34068605
Family Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH179696D CH179696A (en) | 1932-03-22 | 1934-02-06 | Process for the preparation of d-tropic acid-2,2-dimethyl-3-diethylaminopropanol ester. |
CH179698D CH179698A (en) | 1932-03-22 | 1934-02-06 | Process for the preparation of mandelic acid-2,2-dimethyl-3-diethylaminopropanol ester. |
CH179697D CH179697A (en) | 1932-03-22 | 1934-02-06 | Process for the preparation of 1-tropic acid-2,2-dimethyl-3-dimethylaminopropanol ester. |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH179696D CH179696A (en) | 1932-03-22 | 1934-02-06 | Process for the preparation of d-tropic acid-2,2-dimethyl-3-diethylaminopropanol ester. |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH179697D CH179697A (en) | 1932-03-22 | 1934-02-06 | Process for the preparation of 1-tropic acid-2,2-dimethyl-3-dimethylaminopropanol ester. |
Country Status (1)
Country | Link |
---|---|
CH (3) | CH179696A (en) |
-
1934
- 1934-02-06 CH CH179696D patent/CH179696A/en unknown
- 1934-02-06 CH CH179698D patent/CH179698A/en unknown
- 1934-02-06 CH CH179697D patent/CH179697A/en unknown
Also Published As
Publication number | Publication date |
---|---|
CH179697A (en) | 1935-09-15 |
CH179696A (en) | 1935-09-15 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
AT139454B (en) | Process for the preparation of alkamine esters. | |
CH179698A (en) | Process for the preparation of mandelic acid-2,2-dimethyl-3-diethylaminopropanol ester. | |
CH174281A (en) | Process for the preparation of acetyltropic acid-2,2-dimethyl-3-piperidyl-propanol ester. | |
DE759483C (en) | Process for the preparation of aliphatic or araliphatic dicarboxylic acids or their salts | |
DE613403C (en) | Process for the preparation of barbituric acids substituted on carbon and nitrogen | |
AT151657B (en) | Process for the preparation of formaldehyde sodium sulfoxylates from arsenobenzene compounds. | |
AT133918B (en) | Process for the preparation of alkali salts of O-alkyl- or O-aralkyl-3,5-diiodochelidamic acids. | |
AT135351B (en) | Process for the preparation of aliphatic amino alcohols. | |
AT42151B (en) | Process for the preparation of mild laxatives from phenolphthalein. | |
DE551145C (en) | Process for the preparation of iodomethanesulfonic acid or its salts | |
AT146504B (en) | Process for the preparation of amides of pyrazine monocarboxylic acid. | |
DE342969C (en) | Process for the preparation of neutral alkyl esters of sulfuric acid | |
DE654559C (en) | Process for the preparation of naphthalenedicarboxylic acid derivatives | |
CH125403A (en) | Process for the preparation of a substituted quinoline carboxylic acid derivative. | |
CH185061A (en) | Process for the preparation of a substituted amide of a fatty aromatic acid. | |
CH144504A (en) | Process for the preparation of a substituted quinoline carboxylic acid derivative. | |
CH125406A (en) | Process for the preparation of a substituted quinoline carboxylic acid derivative. | |
CH125400A (en) | Process for the preparation of a substituted quinoline carboxylic acid derivative. | |
CH125405A (en) | Process for the preparation of a substituted quinoline carboxylic acid derivative. | |
CH212595A (en) | Process for the preparation of a quinoline compound containing a basic substituted amino group in the 4-position. | |
CH199676A (en) | Process for the preparation of a substituted thiazolecarboxamide. | |
CH123597A (en) | Process for the preparation of N-B-methoxyethylanthranilic acid-B-piperidino-ethyl ester. | |
CH125402A (en) | Process for the preparation of a substituted quinoline carboxylic acid derivative. | |
CH121259A (en) | Process for the preparation of an acyl compound of amino-3-chloro-4-oxybenzene-1-arsic acid. | |
CH265667A (en) | Process for the preparation of 4-amino-2-oxy-benzoic acid esters. |