CH139449A - Process for the preparation of a basic derivative of a substituted quinoline carboxylic acid. - Google Patents
Process for the preparation of a basic derivative of a substituted quinoline carboxylic acid.Info
- Publication number
- CH139449A CH139449A CH139449DA CH139449A CH 139449 A CH139449 A CH 139449A CH 139449D A CH139449D A CH 139449DA CH 139449 A CH139449 A CH 139449A
- Authority
- CH
- Switzerland
- Prior art keywords
- acid
- preparation
- carboxylic acid
- quinolinecarboxylic acid
- basic derivative
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D215/00—Heterocyclic compounds containing quinoline or hydrogenated quinoline ring systems
- C07D215/02—Heterocyclic compounds containing quinoline or hydrogenated quinoline ring systems having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen atoms or carbon atoms directly attached to the ring nitrogen atom
- C07D215/16—Heterocyclic compounds containing quinoline or hydrogenated quinoline ring systems having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen atoms or carbon atoms directly attached to the ring nitrogen atom with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
- C07D215/48—Carbon atoms having three bonds to hetero atoms with at the most one bond to halogen
- C07D215/50—Carbon atoms having three bonds to hetero atoms with at the most one bond to halogen attached in position 4
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Quinoline Compounds (AREA)
Description
Verfahren zur Darstellung eines basischen Derivates einer substituierten Chinolincar bonsäure. Es wurde gefunden, dass man zu einem basischen Derivat einer substituierten Chino- lincarbonsäure gelangt, wenn man auf Säure halogenide der 2-Ha1ogen-4-chinolincarbon- säure asymmetrisches n-Dibutyläthylendi- amin einwirken lässt und das erhaltene 2- Halogen - 4 - chinolincarbonsäure - n -dibutyl - äthylendiamid mit alkalischen Mitteln, die zur Einführung der n-Butyloxygruppe die nen, umsetzt.
Das 2-n-Butyloxy-4-chinolincarbousäure- n-dibutyläthylendiamid bildet farblose Kri stalle vom Schmelzpunkt 62'. Die Base lässt sich aus Petroläther umkristallisieren. Mit Methansulfonsäure bildet sie ein neutrales, wasserlösliches Salz.
Die neue Verbindung soll zu therapeuti schen Zwecken Verwendung finden. Beispiel: Zu einer Lösung von 3,5 Teilen asym metrischem n-Dibutyläthylendiamin in 90 Teilen 10 % iger Natronlauge gibt man unter Kühlung und ständigem Umrühren allmäh lich eine benzolische Lösung von 4,4 Teilen 2-Chlor-4-chinolincarbonsäurechlorid zu. Nach beendigter Reaktion wird die benzolische Lö sung abgetrennt, die gebildete Base mit Salz säure ausgezogen und mit Soda wieder aus gefällt. Man nimmt die Base in Äther auf, vertreibt das Lösungsmittel und kristallisiert sie aus Petroläther um. Das 2-Chlor-4-chino- lincarbonsäure-n-dibutyläthylendiamid bildet farblose Kristalle vom Schmelzpunkt 59 .
In den meisten organischen Lösungsmitteln ist die Base leicht löslich; mit Säuren bildet sie neutrale,wasserlösliche Salze. Das n-Dibutyläthylendiamin (Sdp. 12 93 ) wird durch Reduktion von n-Dibu- tylaminoacetonitril mit Natrium und Alko hol erhalten.
Das n-Dibutylaminoacetonitril (Sdp. 12 113 ) entsteht beider Kondensation von Formarl;d@ehyd mit Blausäure und n-Di- b.utyl:amin. 18 Teile 2-Chlor-4-chinolincarbonsäure-n- dibutyläthylendiamid werden mit einer Lö sung von 1,3 Teilen Natrium in Butylalkohol gekocht. Hierauf wird der Butylalkohol ab destilliert, der Rückstand in Äther aufgenom men und mit Wasser gewaschen.
Nach Ent fernung des Lösungsmittels verbleibt das 2 n-Butyloxy-4-chinolincarbonsäure-n-dibutyl- äthylendiamid als farblose Kristalle. Die Base lässt sich aus Petroläther umkristalli sieren.
Zur Einführung der n-Butyloxygruppe können auch andere Metall-n-butylate in or ganischen Lösungsmitteln oder zum Beispiel auch Alkalien in Gegenwart von n-Butyl- alkohol Verwendung finden.
Process for the preparation of a basic derivative of a substituted quinoline carboxylic acid. It has been found that a basic derivative of a substituted quinoline carboxylic acid is obtained if asymmetric n-dibutylethylenediamine is allowed to act on acid halides of 2-halo-4-quinolinecarboxylic acid and the 2-halo-4-quinolinecarboxylic acid obtained - n -dibutyl - ethylenediamide with alkaline agents, which are used to introduce the n-butyloxy group.
The 2-n-butyloxy-4-quinolinecarbous acid n-dibutylethylenediamide forms colorless crystals with a melting point of 62 '. The base can be recrystallized from petroleum ether. With methanesulfonic acid it forms a neutral, water-soluble salt.
The new connection is intended to be used for therapeutic purposes. Example: To a solution of 3.5 parts of asymmetric n-dibutylethylenediamine in 90 parts of 10% sodium hydroxide solution, a benzene solution of 4.4 parts of 2-chloro-4-quinolinecarboxylic acid chloride is gradually added with cooling and constant stirring. After the reaction has ended, the benzene solution is separated off, the base formed is extracted with hydrochloric acid and precipitated out again with soda. The base is taken up in ether, the solvent is driven off and it is recrystallized from petroleum ether. The 2-chloro-4-quinolinecarboxylic acid n-dibutylethylenediamide forms colorless crystals with a melting point of 59.
The base is easily soluble in most organic solvents; with acids it forms neutral, water-soluble salts. The n-dibutylethylenediamine (bp. 12 93) is obtained by reducing n-dibutylaminoacetonitrile with sodium and alcohol.
The n-dibutylaminoacetonitrile (b.p. 12 113) results from the condensation of formarl; d @ ehyd with hydrocyanic acid and n-di-butyl amine. 18 parts of 2-chloro-4-quinolinecarboxylic acid-n-dibutylethylenediamide are boiled with a solution of 1.3 parts of sodium in butyl alcohol. The butyl alcohol is then distilled off, the residue is taken up in ether and washed with water.
After removal of the solvent, the 2-n-butyloxy-4-quinolinecarboxylic acid-n-dibutyl-ethylenediamide remains as colorless crystals. The base can be recrystallized from petroleum ether.
Other metal n-butylates in organic solvents or, for example, alkalis in the presence of n-butyl alcohol can also be used to introduce the n-butyloxy group.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH139449T | 1927-11-19 | ||
CH137338T | 1931-12-21 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH139449A true CH139449A (en) | 1930-04-15 |
Family
ID=25712959
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH139449D CH139449A (en) | 1927-11-19 | 1927-11-19 | Process for the preparation of a basic derivative of a substituted quinoline carboxylic acid. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH139449A (en) |
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1927
- 1927-11-19 CH CH139449D patent/CH139449A/en unknown
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