CH124690A - Process for the preparation of N-B-methoxyethylanthranilic acid-B-piperidinoethyl ester. - Google Patents
Process for the preparation of N-B-methoxyethylanthranilic acid-B-piperidinoethyl ester.Info
- Publication number
- CH124690A CH124690A CH124690DA CH124690A CH 124690 A CH124690 A CH 124690A CH 124690D A CH124690D A CH 124690DA CH 124690 A CH124690 A CH 124690A
- Authority
- CH
- Switzerland
- Prior art keywords
- acid
- methoxyethylanthranilic
- preparation
- ester
- piperidinoethyl
- Prior art date
Links
Landscapes
- Nitrogen Condensed Heterocyclic Rings (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
Description
Verfahren zur Darstellung von N-ss-1VIethogyäthylanthranilsäure-ss-piperidinoäthylester. Es wurde gefunden, dass man durch Um setzung von N-ss-Methoxyäthylanthranilsäure- alkylester mit P-Piperidinoäthylalkohol zu dem im Hauptpatent beschriebenen N-P-M' eth- oxyäthylanthranilsäure-@- piperidinoäthylester gelangt, dessen Salze, wie Vergleichsversuche ergeben haben, bezüglich des Wirkungsgrades das Cocain um ein Mehrfaches übertreffen. Der neue Ester ist als solcher und in Form seiner Salze (Chlorhydrat, Sulfat,
Citrat, Tartrat etc.) ein typisches Oberflächen anästhetikum und kommt demnach für das Gebiet der Schleimhautanästhesie in Frage. Der basische Ester ist ein fast farbloses Öl. Das salzsaure Salz bildet farblose Kristalle vom Schmelzpunkt 118 , seine wässerige Lösung fluoresziert blau und zeigt starkes Anästhesie- rungsvermögen.
Beispiel: N-ss-Methoxyäthylanthranilsäure entsteht durch Kochen einer wässerigen Lösung von anthranilsaurem Natrium mit ss-Chloräthyl- methyläther; sie ist in Wasser so gut wie unlöslich. Schmelzpunkt 102'.
Durch Ver- esterung mit Äthylalkohol liefert sie den N-P-Methoxyäthylanthranilsäureäthylester, ein 01 vom Kp. 8 mm 160---165 . N-ss-Methoxy- äthylanthranilsäureäthylester, ss- Piperidino- äthanol, und wenig Natriumäthylat als Ka talysator werden zusammen erhitzt, so dass der sich abspaltende Äthylalkohol über destilliert. Das zurückbleibende Reaktions produkt wird in Alkohol gelöst und unter Kühlung mit alkoholischer Salzsäure bis zu neutraler Reaktion versetzt.
Auf Ätherzusatz scheidet sich das Methoxyäthylanthranilsäure- piperidino - äthylester - monohydrochlorid als rasch fest werdendes 01 ab. Aus Essigester umkristallisiert bildet es ein farbloses Kristall pulver. F .1:i8 . Die Lösung in Wasser fluoresziert blau.
Process for the preparation of N-ss-1VIethogyäthylanthranilicäure-ss-piperidinoäthylester. It has been found that reaction of N-ß-methoxyethylanthranilic acid alkyl ester with P-piperidinoethyl alcohol leads to the NPM 'ethoxyethylanthranilic acid - @ - piperidinoethyl ester described in the main patent, the salts of which, as comparative experiments have shown, are cocaine in terms of efficiency outperform many times over. The new ester is available as such and in the form of its salts (chlorohydrate, sulfate,
Citrate, tartrate etc.) is a typical surface anesthetic and is therefore suitable for the area of mucosal anesthesia. The basic ester is an almost colorless oil. The hydrochloric acid salt forms colorless crystals with a melting point of 118, its aqueous solution fluoresces blue and shows strong anesthetic properties.
Example: N-ß-methoxyethyl anthranilic acid is produced by boiling an aqueous solution of sodium anthranil with ß-chloroethyl methyl ether; it is practically insoluble in water. Melting point 102 '.
By esterification with ethyl alcohol it yields the N-P-methoxyethylanthranilic acid ethyl ester, an oil with a b.p. 8 mm 160-165. N-ss-Methoxy- äthylanthranilsäureäthylester, ss- piperidino- ethanol, and a little sodium ethylate as Ka catalyst are heated together so that the ethyl alcohol which is split off is distilled over. The remaining reaction product is dissolved in alcohol and mixed with alcoholic hydrochloric acid while cooling until the reaction is neutral.
On addition of ether, the methoxyethylanthranilic acid piperidino - ethyl ester - monohydrochloride separates as a rapidly solidifying oil. Recrystallized from ethyl acetate, it forms a colorless crystal powder. Q .1: i8. The solution in water fluoresces blue.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE124690X | 1925-10-28 | ||
CH123597T | 1926-10-26 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH124690A true CH124690A (en) | 1928-02-16 |
Family
ID=25710119
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH124690D CH124690A (en) | 1925-10-28 | 1926-10-26 | Process for the preparation of N-B-methoxyethylanthranilic acid-B-piperidinoethyl ester. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH124690A (en) |
-
1926
- 1926-10-26 CH CH124690D patent/CH124690A/en unknown
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CH124690A (en) | Process for the preparation of N-B-methoxyethylanthranilic acid-B-piperidinoethyl ester. | |
CH204708A (en) | Process for the preparation of an amino alcohol. | |
DE432420C (en) | Process for the preparation of N-methylsulphurous acid salts of secondary amines | |
DE860637C (en) | Process for the preparation of sulfur-containing cyclic organic compounds | |
CH189749A (en) | Method for the preparation of 17-methyl-dihydrofollicle hormone. | |
AT158872B (en) | Process for the production of 5.5-disubstituted or 1.5.5-trisubstituted barbituric acids. | |
DE467627C (en) | Process for the preparation of N-methanesulfinic acid salts of secondary aromatic-aliphatic amines | |
CH125405A (en) | Process for the preparation of a substituted quinoline carboxylic acid derivative. | |
CH123597A (en) | Process for the preparation of N-B-methoxyethylanthranilic acid-B-piperidino-ethyl ester. | |
CH125400A (en) | Process for the preparation of a substituted quinoline carboxylic acid derivative. | |
CH124228A (en) | Process for the preparation of a substituted quinoline carboxylic acid derivative. | |
CH154173A (en) | Process for the preparation of 5,6-dimethoxy-8-aminoquinoline. | |
CH139369A (en) | Process for the preparation of 4- (oxyethyl) -amino-3-methyl-1-oxybenzene. | |
CH125403A (en) | Process for the preparation of a substituted quinoline carboxylic acid derivative. | |
CH240379A (en) | Process for the preparation of an acylated, aliphatic aminocarboxamide. | |
CH125399A (en) | Process for the preparation of a substituted quinoline carboxylic acid derivative. | |
CH139447A (en) | Process for the preparation of a basic derivative of a substituted quinoline carboxylic acid. | |
CH139446A (en) | Process for the preparation of a basic derivative of a substituted quinoline carboxylic acid. | |
CH202162A (en) | Process for the preparation of a new aminoketone. | |
CH148958A (en) | Process for the preparation of a basic ether of the pyridine series. | |
CH139435A (en) | Process for the preparation of a basic derivative of a substituted quinoline carboxylic acid. | |
CH204704A (en) | Process for the preparation of an amino alcohol. | |
CH125402A (en) | Process for the preparation of a substituted quinoline carboxylic acid derivative. | |
CH240389A (en) | Process for the preparation of an acylated, aliphatic aminocarboxamide. | |
CH137144A (en) | Process for the preparation of a basic phenol alkyl ether. |