CH174913A - Process for the preparation of acetyltropic acid-2,2-dimethyl-3-diethylaminopropanol ester. - Google Patents
Process for the preparation of acetyltropic acid-2,2-dimethyl-3-diethylaminopropanol ester.Info
- Publication number
- CH174913A CH174913A CH174913DA CH174913A CH 174913 A CH174913 A CH 174913A CH 174913D A CH174913D A CH 174913DA CH 174913 A CH174913 A CH 174913A
- Authority
- CH
- Switzerland
- Prior art keywords
- ester
- diethylaminopropanol
- dimethyl
- acid
- preparation
- Prior art date
Links
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
Description
Verfahren zur Darstellung von Acetyltropasäure-2,2-dimethyl-3- diätliylaminopropaiiolester. Die Ester von Aminoalkoholen der all gemeinen Formel:
EMI0001.0004
wobei R ein Alkyl und R' ein Alkyl oder Wasserstoff bedeutet, mit aromatischen Säu ren, sind sehr stark wirksame Lokal- anaesthetica.
Es wurde gefunden, dass in den fett aromatischen Estern dieser Aminoalkohole die lokalanaesthetische 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,<B>151127</B> bis 151130, 151134 und 151185 erhaltenen Aminoaldehyden durch Reduktion mit Na triumamalgam in schwach essigsaurer Lösung gewonnen werden.
Gegenstand der vorliegenden Erfindung ist ein Verfahren zur Darstellung von Acetyltropasäure - 2,2 - dimethyl - 3 - dVäthyl- aminopropanolester, welches ,dadurch ge- kennzeichnet ist, dass man auf 2,2-Dimethyl- 3-diäthylaminopropanol eine Verbindung der Formel
EMI0001.0025
einwirken lässt. R bedeutet einen bei der Reaktion sieh abspaltenden Rest, wie Hyd- rogyl, Halogen oder Ogalkyl.
Der Acetyltropasäure-2,2-dimethyl-3-di- äthylaminopropanolester stellt ein farbloses 0i dar. Das Hydrojodid bildet farblose Nä- delchen vom Schmelzpunkt <B>92'.</B> Sie lösen sich in Wasser; in Alkohol sind sie schwer-, in Xther oder Chloroform unlöslich. Die wässerige Lösung reagiert schwach sauer und schmeckt bitter. Die Acetylgruppe kann dusch Einwirkung von Säuren leicht abge spalten werden. Der Ester soll als Arzneimittel Verwendung finden.
<I>Beispiel:</I> Mau bereitet aus 18 Teilen Tropasäure (a-Phenyl-ss-öxypropionsäure) durch Einwir kung von Acetyl- und Thionylchlorid in be kannter Weise das Acetyltropasäurechlorid. 22,6 Teile Acetyltropasäurechlorid werden im Verlauf einer halben Stunde unter Rühren und Kühlen zu einer Lösung von 31,8 Tei len 2,2-Dimethyl-3-diäthylaminopropanol in Benzol gegeben und die Mischung stehen ge lassen.
Nach 24 Stunden nutscht man das ausgefallene Hydrochlorid des Aminoalkohols ab und extrahiert die benzolische Lösung des A.cetyltropasäure-2,2-dimethyl-3-diäthyl- aminopropanolesters mit normaler Salzsäure. Beim Versetzen der sauren Lösung mit Am moniak fällt der Ester als<B>01</B> aus.
Durch Einwirkung einer konzentrierten Lösung von Kaliumjodid auf die Lösung des Esters in verdünnter Salzsäure erhält man das Hydro- jodid des Acetyltropasäureesters des 2,2-Di- methyl-3-diäthylaminopropanols als langsam erstarendes Öl, das nach dem Umkristalli- sieren aus einem Gemisch von Alkohol und Ither farblose Nädelchen vom Schmelzpunkt 92 bildet.
Process for the preparation of acetyltropic acid-2,2-dimethyl-3-dietliylaminopropaiiol ester. The esters of amino alcohols of the general formula:
EMI0001.0004
where R is alkyl and R 'is alkyl or hydrogen, with aromatic acids, are very effective local anesthetics.
It has been found that in the fatty aromatic esters of these amino alcohols the local anesthetic effect is almost completely regressed, but that instead they have an extraordinarily strong antispasmodic effect, which significantly exceeds the effect of papaverine in individual members.
The amino alcohols used as starting materials can be obtained from the amino aldehydes obtained by the methods of patents 147156, 151127 to 151130, 151134 and 151185 by reduction with sodium amalgam in a weakly acetic acid solution.
The present invention relates to a process for the preparation of acetyltropic acid - 2,2 - dimethyl - 3 - dVäthylaminopropanolester, which is characterized in that 2,2-dimethyl-3-diethylaminopropanol is a compound of the formula
EMI0001.0025
can act. R denotes a radical which is split off during the reaction, such as hydrogen, halogen or ogalkyl.
The acetyltropic acid 2,2-dimethyl-3-diethylaminopropanol ester is a colorless oil. The hydroiodide forms colorless needles with a melting point of <B> 92 '. </B> They dissolve in water; they are sparingly soluble in alcohol and insoluble in ether or chloroform. The aqueous solution reacts slightly acidic and tastes bitter. The acetyl group can easily be split off by the action of acids. The ester is said to be used as a drug.
<I> Example: </I> Mau prepares the acetyltropic acid chloride from 18 parts of tropic acid (a-phenyl-ss-oxypropionic acid) through the action of acetyl and thionyl chloride in a known manner. 22.6 parts of acetyltropic acid chloride are added over half an hour with stirring and cooling to a solution of 31.8 parts of 2,2-dimethyl-3-diethylaminopropanol in benzene and the mixture is allowed to stand.
After 24 hours, the precipitated amino alcohol hydrochloride is filtered off with suction and the benzene solution of the 2,2-dimethyl-3-diethyl aminopropanol ester of acetyltropic acid is extracted with normal hydrochloric acid. When ammonia is added to the acidic solution, the ester precipitates as <B> 01 </B>.
The action of a concentrated solution of potassium iodide on the solution of the ester in dilute hydrochloric acid gives the hydroiodide of the acetyltropic acid ester of 2,2-dimethyl-3-diethylaminopropanol as a slowly solidifying oil which, after recrystallizing from a mixture of Alcohol and ither form colorless needles with a melting point of 92.
Claims (1)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE139454X | 1932-03-22 | ||
CH168876T | 1933-02-16 | ||
DEH136773D DE594085C (en) | 1932-03-22 | 1933-07-07 | Process for the production of basic esters of fatty acids |
Publications (1)
Publication Number | Publication Date |
---|---|
CH174913A true CH174913A (en) | 1935-01-31 |
Family
ID=34068601
Family Applications (8)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH168876D CH168876A (en) | 1932-03-22 | 1933-02-16 | Process for the preparation of tropic acid-2.2-dimethyl-3-diethylaminopropanol ester. |
CH174282D CH174282A (en) | 1932-03-22 | 1933-02-16 | Process for the preparation of benzilic acid-2,2-dimethyl-3-diethylaminopropanol ester. |
CH174280D CH174280A (en) | 1932-03-22 | 1933-02-16 | Method for the preparation of rac. Acetylmandelic acid 2,2-dimethyl-3-dimethylaminopropanol ester. |
CH174281D CH174281A (en) | 1932-03-22 | 1933-02-16 | Process for the preparation of acetyltropic acid-2,2-dimethyl-3-piperidyl-propanol ester. |
CH174913D CH174913A (en) | 1932-03-22 | 1933-02-16 | Process for the preparation of acetyltropic acid-2,2-dimethyl-3-diethylaminopropanol ester. |
CH174279D CH174279A (en) | 1932-03-22 | 1933-02-16 | Process for the preparation of phenylbromoallylacetic acid 2,2-dimethyl-3-diethylaminopropanol ester. |
CH174278D CH174278A (en) | 1932-03-22 | 1933-02-16 | Process for the preparation of a-phenylbutyric acid-2.2-dimethyl-3-diethylaminopropanol ester. |
CH174912D CH174912A (en) | 1932-03-22 | 1934-02-06 | Process for the preparation of 1-acetyltropic acid-2,2-dimethyl-3-diethylaminopropanol ester. |
Family Applications Before (4)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH168876D CH168876A (en) | 1932-03-22 | 1933-02-16 | Process for the preparation of tropic acid-2.2-dimethyl-3-diethylaminopropanol ester. |
CH174282D CH174282A (en) | 1932-03-22 | 1933-02-16 | Process for the preparation of benzilic acid-2,2-dimethyl-3-diethylaminopropanol ester. |
CH174280D CH174280A (en) | 1932-03-22 | 1933-02-16 | Method for the preparation of rac. Acetylmandelic acid 2,2-dimethyl-3-dimethylaminopropanol ester. |
CH174281D CH174281A (en) | 1932-03-22 | 1933-02-16 | Process for the preparation of acetyltropic acid-2,2-dimethyl-3-piperidyl-propanol ester. |
Family Applications After (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH174279D CH174279A (en) | 1932-03-22 | 1933-02-16 | Process for the preparation of phenylbromoallylacetic acid 2,2-dimethyl-3-diethylaminopropanol ester. |
CH174278D CH174278A (en) | 1932-03-22 | 1933-02-16 | Process for the preparation of a-phenylbutyric acid-2.2-dimethyl-3-diethylaminopropanol ester. |
CH174912D CH174912A (en) | 1932-03-22 | 1934-02-06 | Process for the preparation of 1-acetyltropic acid-2,2-dimethyl-3-diethylaminopropanol ester. |
Country Status (1)
Country | Link |
---|---|
CH (8) | CH168876A (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3103308A1 (en) * | 1981-01-31 | 1982-08-26 | Dynamit Nobel Ag, 5210 Troisdorf | METHOD FOR PRODUCING (ALPHA) -HYDROXIMETHYLENARYL VESSEL ESTERS |
-
1933
- 1933-02-16 CH CH168876D patent/CH168876A/en unknown
- 1933-02-16 CH CH174282D patent/CH174282A/en unknown
- 1933-02-16 CH CH174280D patent/CH174280A/en unknown
- 1933-02-16 CH CH174281D patent/CH174281A/en unknown
- 1933-02-16 CH CH174913D patent/CH174913A/en unknown
- 1933-02-16 CH CH174279D patent/CH174279A/en unknown
- 1933-02-16 CH CH174278D patent/CH174278A/en unknown
-
1934
- 1934-02-06 CH CH174912D patent/CH174912A/en unknown
Also Published As
Publication number | Publication date |
---|---|
CH174279A (en) | 1934-12-31 |
CH174280A (en) | 1934-12-31 |
CH174912A (en) | 1935-01-31 |
CH168876A (en) | 1934-04-30 |
CH174281A (en) | 1934-12-31 |
CH174282A (en) | 1934-12-31 |
CH174278A (en) | 1934-12-31 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
AT139454B (en) | Process for the preparation of alkamine esters. | |
DE1468201B1 (en) | phenoxy-acetic acid compounds and processes for their preparation | |
CH174913A (en) | Process for the preparation of acetyltropic acid-2,2-dimethyl-3-diethylaminopropanol ester. | |
DE924450C (en) | Process for the preparation of coumarin derivatives | |
DE586247C (en) | Process for the production of basic esters of fatty acids | |
DE591677C (en) | Process for the production of basic esters of fatty acids | |
AT156171B (en) | Process for the preparation of ether derivatives of 3,5-diiodo-4-oxyacetophenone. | |
DE934103C (en) | Process for the production of cyclooctylated alkyl acetic acids with a strong cholagogue effect | |
AT92388B (en) | Process for the preparation of aralkyl esters of benzylamine carboxylic acids. | |
DE763489C (en) | Process for the preparation of ª-aminoethyl esters of substituted phenylacetic acids | |
CH179696A (en) | Process for the preparation of d-tropic acid-2,2-dimethyl-3-diethylaminopropanol ester. | |
DE752871C (en) | Process for the production of basic ethers of fatty aromatic oxyates | |
DE420447C (en) | Process for the preparation of ether derivatives of aliphatic or aromatic dialkylaminoethanol esters and their derivatives | |
DE927031C (en) | Process for the preparation of the aneurine salicylic acid ester | |
DD215533A1 (en) | PROCESS FOR THE PREPARATION OF NEW ALKALI AND ERDALCALISALES OF DI-N-PROPYL ACIDIC ACID | |
DE613403C (en) | Process for the preparation of barbituric acids substituted on carbon and nitrogen | |
DE203081C (en) | ||
DE679712C (en) | Process for the production of ethers of thyroxine or its esters | |
DE654559C (en) | Process for the preparation of naphthalenedicarboxylic acid derivatives | |
DE302737C (en) | ||
CH307799A (en) | Process for the preparation of a new basic substituted fatty acid (2-halo-6-methyl) anilide. | |
CH93751A (en) | Process for the preparation of benzyl p-diethylaminomethylbenzoate. | |
CH149837A (en) | Process for the preparation of 3-diethylamino-2-dimethyl-1-p-aminobenzoyloxypropane. | |
CH191343A (en) | Process for the preparation of N-methyl-C, C-allylisopropylbarbituric acid. | |
CH186392A (en) | Process for the preparation of N-methyl-C, C-allylisopropylbarbituric acid. |