CH117488A - Process for the preparation of p-N-B-methoxyethylaminobenzoic acid-B-diethylamino-ethyl ester. - Google Patents
Process for the preparation of p-N-B-methoxyethylaminobenzoic acid-B-diethylamino-ethyl ester.Info
- Publication number
- CH117488A CH117488A CH117488DA CH117488A CH 117488 A CH117488 A CH 117488A CH 117488D A CH117488D A CH 117488DA CH 117488 A CH117488 A CH 117488A
- Authority
- CH
- Switzerland
- Prior art keywords
- acid
- methoxyethylaminobenzoic
- preparation
- diethylamino
- ester
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 3
- 238000002360 preparation method Methods 0.000 title claims description 3
- 239000002253 acid Substances 0.000 claims description 5
- BFSVOASYOCHEOV-UHFFFAOYSA-N 2-diethylaminoethanol Chemical compound CCN(CC)CCO BFSVOASYOCHEOV-UHFFFAOYSA-N 0.000 claims description 3
- 230000003444 anaesthetic effect Effects 0.000 claims description 3
- 239000013078 crystal Substances 0.000 claims description 3
- 150000002148 esters Chemical class 0.000 claims description 3
- 238000002844 melting Methods 0.000 claims description 3
- 230000008018 melting Effects 0.000 claims description 3
- 125000005907 alkyl ester group Chemical group 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 claims description 2
- 230000007935 neutral effect Effects 0.000 claims description 2
- 239000000843 powder Substances 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 3
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- ZPUCINDJVBIVPJ-LJISPDSOSA-N cocaine Chemical compound O([C@H]1C[C@@H]2CC[C@@H](N2C)[C@H]1C(=O)OC)C(=O)C1=CC=CC=C1 ZPUCINDJVBIVPJ-LJISPDSOSA-N 0.000 description 2
- 235000019441 ethanol Nutrition 0.000 description 2
- 206010002091 Anaesthesia Diseases 0.000 description 1
- XBDQKXXYIPTUBI-UHFFFAOYSA-M Propionate Chemical compound CCC([O-])=O XBDQKXXYIPTUBI-UHFFFAOYSA-M 0.000 description 1
- 230000001476 alcoholic effect Effects 0.000 description 1
- 230000037005 anaesthesia Effects 0.000 description 1
- 229960003920 cocaine Drugs 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000032050 esterification Effects 0.000 description 1
- 238000005886 esterification reaction Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- WBJINCZRORDGAQ-UHFFFAOYSA-N formic acid ethyl ester Natural products CCOC=O WBJINCZRORDGAQ-UHFFFAOYSA-N 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- QDRKDTQENPPHOJ-UHFFFAOYSA-N sodium ethoxide Chemical compound [Na+].CC[O-] QDRKDTQENPPHOJ-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Nitrogen Condensed Heterocyclic Rings (AREA)
Description
Verfahren zur Darstellung von p-N-ss-1VZethogyäthylaminouenzoesäure-,Q-diäthylamino- äthylester. Es wurde gefunden, dass man .durch Um setzung der p-N-ss-Methoxyäthylaminobenzoe- säurealkylester mit ss-Diäthylaminoäthylalko- hol zu dem p-N-ss-Methoxyäthylaminobenzoe- säure-ss-diäthylaminoäthylester gelangt, der in Form seiner Salze, wie umfangreiche Ver gleichsversuche der Anmelderin ergeben haben, bezüglich der Stärke seiner Wirkung das Kokain um ein Vielfaches übertrifft.
Das neue Produkt ist ein typisches Ober flächenanästhetikum und kommt also für das grosse Gebiet der Schleimhautanästhesie in erster Linie in Frage. Der basische Ester ist ein helles 01, das Chlorhydrat ist ein weisses Kristallpulver vom Schmelzpunkt 86 , das sich in Wasser mit neutraler Reaktion löst und ein ausserordentlich starkes Anästhesie- rungsvermögen besitzt.
Beispiel: p -N-ss-Methoxyäthylaminobenzoesäure- äthylester (aus der Säure durch Veresterung mit Äthylalkohol in üblicher Weise erhalten, schwach gelbliches 01 vom Kp. 8 mm 199 bis 200') und ss-Diäthylaminoäthylalkohol im Überschuss werden unter Zusatz von wenig Natriumäthylat zusammen erhitzt. Äthylalkohol spaltet sich ab und destilliert über.
Die zurückbleibende Esterbase wird in Äther gelöst, durch Versetzen mit der be rechneten Menge alkoholischer Salzsäure in das Monohydrochlorid übergeführt und dieses durch Umkristallisieren aus Ameisensäure- äthylester gereinigt. Man erhält es in farb losen Kristallen vom Schmelzpunkt 86 .
Process for the preparation of p-N-ss-1VZethogyäthylaminouenzoic acid, Q-diethylamino-ethyl ester. It has been found that. By reacting the pN-ß-methoxyethylaminobenzoic acid alkyl ester with ß-diethylaminoethyl alcohol to the pN-ß-methoxyethylaminobenzoic acid-ß-diethylaminoethyl ester arrives in the form of its salts, like extensive comparative experiments Applicants have shown that cocaine is many times stronger in terms of the strength of its effect.
The new product is a typical surface anesthetic and is therefore primarily suitable for the large area of mucosal anesthesia. The basic ester is a light oil, the chlorohydrate is a white crystal powder with a melting point of 86, which dissolves in water with a neutral reaction and has an extremely strong anesthetic power.
Example: p -N-ss-Methoxyäthylaminobenzoesäure- ethyl ester (obtained from the acid by esterification with ethyl alcohol in the usual way, pale yellowish oil with a b.p. 8 mm 199 to 200 ') and ss-diethylaminoethyl alcohol in excess are combined with the addition of a little sodium ethylate heated. Ethyl alcohol splits off and distills over.
The remaining ester base is dissolved in ether, converted into the monohydrochloride by adding the calculated amount of alcoholic hydrochloric acid and this is purified by recrystallization from ethyl formate. It is obtained in colorless crystals with a melting point of 86.
Claims (1)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH113054T | 1925-01-06 | ||
| CH117488T | 1925-01-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH117488A true CH117488A (en) | 1926-11-01 |
Family
ID=25708096
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH117488D CH117488A (en) | 1925-01-06 | 1925-01-06 | Process for the preparation of p-N-B-methoxyethylaminobenzoic acid-B-diethylamino-ethyl ester. |
Country Status (1)
| Country | Link |
|---|---|
| CH (1) | CH117488A (en) |
-
1925
- 1925-01-06 CH CH117488D patent/CH117488A/en unknown
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