DE396507C - Process for the preparation of pyrazolone derivatives - Google Patents

Process for the preparation of pyrazolone derivatives

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Publication number
DE396507C
DE396507C DEF51332D DEF0051332D DE396507C DE 396507 C DE396507 C DE 396507C DE F51332 D DEF51332 D DE F51332D DE F0051332 D DEF0051332 D DE F0051332D DE 396507 C DE396507 C DE 396507C
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DE
Germany
Prior art keywords
preparation
weight
parts
pyrazolone derivatives
added
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
DEF51332D
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German (de)
Inventor
Dr Hans Hahl
Dr Ludwig Schutz
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bayer AG
Original Assignee
Farbenfabriken Vorm Friedr Bayer and Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Farbenfabriken Vorm Friedr Bayer and Co filed Critical Farbenfabriken Vorm Friedr Bayer and Co
Priority to DEF51332D priority Critical patent/DE396507C/en
Application granted granted Critical
Publication of DE396507C publication Critical patent/DE396507C/en
Expired legal-status Critical Current

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Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D231/00Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings
    • C07D231/02Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings not condensed with other rings
    • C07D231/10Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members
    • C07D231/14Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members 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
    • C07D231/18One oxygen or sulfur atom
    • C07D231/20One oxygen atom attached in position 3 or 5
    • C07D231/22One oxygen atom attached in position 3 or 5 with aryl radicals attached to ring nitrogen atoms

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)

Description

Verfahren zur Darstellung von Pyrazolonderivaten. Es wurde gefunden, daß man zu neuen, therapeutisch wertvollen Verbindungen gelangt, wenn man auf Oxypyrazolone, ihre klomologen oder Substitutionsderivate basische Allcvlhalogenide der allgemeinen Formel (Allcyl) @ N # OH, # CH, # Halogen bei Gegenwart alkalisch wirkender Mittel einwirken läßt. Man erhält so stark basische Verl:indungen, die mit Säuren neutrale, wasserli;sliche Salze bilden und infolge ihrer antipyretischen und gefäßzusammenziehenden I_igenschaften wertvolle Arzneimittel darstellen. Man kann auch so verfahren, daß man zunächst durch Einwirlaing von Allcylendilialogeniden die Halogenalkylätlier der Oxypyrazolonä darstellt und diese mit sekundären alipliatischen Aminen in die Aminoalkyläther überführt.Process for the preparation of pyrazolone derivatives. It was found, that one arrives at new, therapeutically valuable compounds when one on oxypyrazolones, Their clomologues or substitution derivatives are basic alkyl halides of the general Formula (alkyl) @ N # OH, # CH, # halogen in the presence of alkaline agents can act. In this way, strongly basic compounds are obtained, which are neutral with acids, Form water-soluble salts and as a result of their antipyretic and vascular contraction Properties represent valuable medicinal products. One can also proceed in such a way that the haloalkyl ethers are first prepared by injecting alkylenedilialides represents the Oxypyrazolonä and these with secondary aliphatic amines in the Aminoalkylethers transferred.

Von den bekannten als Fiebermittel geeigneten Derivaten der Pyrazolonreihe, die basische Alkylreste am Kohlenstoff enthalten (vgl. die Patentschrift 293287, der Kl. i2p und die österreichische Patentschrift 86136), unterscheiden sich die neuen Produkte durch ihre gefäßzusammenziehenden Eigenschaften. Beispiel i.Of the known derivatives of the pyrazolone series suitable as antipyretic, which contain basic alkyl radicals on carbon (see patent 293287, the class i2p and the Austrian patent specification 86136), the differ new products due to their vasoconstricting properties. Example i.

7 Gewichtsteile Natrium werden in 7o Gewichtsteilen Alkohol aufgelöst und zu einer alkoholischen Lösung von 61 Gewichtsteilen Diniethyloxypyrazolon (vgl. M i c h a e 1 i s & S c 1i e n k, Ber. 4.o (19071, S. 3568) gegeben. Dann werden 41 Gewichtsteile Diäthylaminoätliylclilorid hinzugefügt und die Lösung einige Zeit gekocht. Nach beendigter Reaktion wird der Alkohol abdestilliert, der Rückstand mit Wasser versetzt und das sich abscheidende Öl abgehoben. Nach dem Trocknen mit Kaliumcarbonat wird es der Destillation im Vakuum unterworfen. Unter io mm Druck geht eine gelbe von 2io bis 2i5' siedende Flüssigkeit über, die beim Stehen kristallinisch erstarrt. Mit der berechneten Menge (i Mol.) Salzsäure gibt sie ein aus Aceton schön kristallisierendes Hydrochlorid vom Schmelzpunkt 157°. Es besitzt die nachstehende Zusammensetzung: Beispiele. 3 Gewichtsteile Natrium werden in 3o Gewichtsteilen Alkohol gelöst und zu einer alkoholischen Lösung von 32 Gewichtsteilen Diallyloxypyrazolon gegeben. Darauf wird diese alkoholische Lösung mit 17 Gewichtsteilen Diäthylaminoäthylchlorid versetzt, einige Zeit gekocht und aufgearbeitet wie in Beispiel i.7 parts by weight of sodium are dissolved in 70 parts by weight of alcohol and added to an alcoholic solution of 61 parts by weight of diniethyloxypyrazolone (cf. M ichae 1 is & S c 1i enk, Ber. 4.o (19071, p. 3568). 41 parts by weight of diethylaminoethyl chloride are then added added and the solution boiled for some time. When the reaction is complete, the alcohol is distilled off, water is added to the residue and the oil which separates out is lifted off. After drying with potassium carbonate, it is subjected to distillation in vacuo. Under 10 mm pressure a yellow of 2io up to 2i5 'boiling liquid, which solidifies crystalline on standing. With the calculated amount (1 mol.) of hydrochloric acid it gives a nicely crystallizing hydrochloride from acetone with a melting point of 157 °. It has the following composition: Examples. 3 parts by weight of sodium are dissolved in 3o parts by weight of alcohol and added to an alcoholic solution of 32 parts by weight of diallyloxypyrazolone. 17 parts by weight of diethylaminoethyl chloride are then added to this alcoholic solution, the mixture is boiled for a while and worked up as in Example i.

Das Diäthylaminoätliylcliallyloxvpyrazolon ist ein gelbes Ül, das im Vakuum (io mm) von 228 bis 233° übergeht. F_llenso wie (las I )i:itliylaniinoiitllylclinletliylozypyrazolon bil- (let es finit Säuren Salze.'' Beispiel 3. 3o Gewichtsteile des Natritimsalzes des Diäthyloxypyrazolons (Conrad S Zart, Ber.39 [igoG], S.3282) und 15 Gewichts- teile Dinietlivllaininoätlivlchlorid «-erden zu- saillilleil im Ölbad auf i2o° einige Stunden erhitzt. Nach l:eendigter Reaktion wird die Schmelze wie in Beispiel i aufgearbeitet. Das Dinietliylaininoiitliyldiätli3#loxypyra- zolon geht von 220 bis 235° unter io nlin Druck als ein gelbes Z)1 über, das beine Stehen kristallinisch erstarrt. :Mit Säuren bildet es gilt kristallisierende Salze.The diethylaminoätliylcliallyloxvpyrazolon is a yellow oil that in a vacuum (io mm) of 228 to 233 °. F_llens as (read I) i: itliylaniinoiitllylclinletliylozypyrazolon bil- (let it be finite acids salts. '' Example 3. 3o parts by weight of the sodium salt of the Diethyloxypyrazolons (Conrad S Zart, Ber.39 [igoG], p.3282) and 15 weight divide Dinietlivllaininoätlivlchlorid «-grounds to- saillilleil in an oil bath at i2o ° for a few hours heated. After the reaction has ended, the Melt worked up as in Example i. The Dinietliylaininoiitliyldiätli3 # loxypyra- zolon goes below io nlin from 220 to 235 ° Print as a yellow Z) 1 over the legs crystalline solidified. : With acids it forms crystallizing salts.

Claims (1)

PATENTANSPRUCH Verfahren zur Darstellung von Pyrazolonderivaten, dadurch gekennzeichnet, claß inan Oxypyrazolone, ihre Homologen oder Substitutionsprodukte in Gegenwart alkalisch wirkender Mittel mit basischen Alkyllialogeniden der allgemeinen Formel (Alkyl) 2 N # CH" # CH@ # Halogen Lehandelt oder die rOxypyrazolone zunächst durch Einwirkung von Allcvlendilialogeniden in die Halogenalkvlätlier und diese finit sekundären aliphatischen Aminen in die Anlinoalkyläther überführt. PATENT CLAIM Process for the preparation of pyrazolone derivatives, characterized in that oxypyrazolones, their homologues or substitution products in the presence of alkaline agents with basic alkyl halides of the general formula (alkyl) 2 N # CH "# CH @ # halogen Lehandt or the rOxypyrazolone initially by the action of Allcvlendilialogeniden in the haloalkvlätlier and these finite secondary aliphatic amines in the Anlinoalkyläther.
DEF51332D 1922-03-12 1922-03-12 Process for the preparation of pyrazolone derivatives Expired DE396507C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEF51332D DE396507C (en) 1922-03-12 1922-03-12 Process for the preparation of pyrazolone derivatives

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEF51332D DE396507C (en) 1922-03-12 1922-03-12 Process for the preparation of pyrazolone derivatives

Publications (1)

Publication Number Publication Date
DE396507C true DE396507C (en) 1924-06-02

Family

ID=7104527

Family Applications (1)

Application Number Title Priority Date Filing Date
DEF51332D Expired DE396507C (en) 1922-03-12 1922-03-12 Process for the preparation of pyrazolone derivatives

Country Status (1)

Country Link
DE (1) DE396507C (en)

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