AT44373B - Process for the preparation of basic purine derivatives. - Google Patents

Process for the preparation of basic purine derivatives.

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Publication number
AT44373B
AT44373B AT44373DA AT44373B AT 44373 B AT44373 B AT 44373B AT 44373D A AT44373D A AT 44373DA AT 44373 B AT44373 B AT 44373B
Authority
AT
Austria
Prior art keywords
preparation
purine derivatives
derivatives
basic
basic purine
Prior art date
Application number
Other languages
German (de)
Original Assignee
Farbenfab Vorm Bayer F & 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.)
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Publication date
Application filed by Farbenfab Vorm Bayer F & Co filed Critical Farbenfab Vorm Bayer F & Co
Application granted granted Critical
Publication of AT44373B publication Critical patent/AT44373B/en

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  • Nitrogen Condensed Heterocyclic Rings (AREA)

Description

  

   <Desc/Clms Page number 1> 
 
 EMI1.1 
 
 EMI1.2 
 

 <Desc/Clms Page number 2> 

 
 EMI2.1 
 300 Teilen   einer Bprozentigen Natriumäthylatlösung   zwei Stunden auf dem Wasserbad erhitzt. Nach dem Erkalten gibt man vorsichtig die aem Natrium entsprechende Menge konzentrierte Salzsäure zu, filtriert das ausgeschiedene Kochsalz ab, entfernt den Alkohol durch Abdestillieren und kristallisiert den Rückstand aus absolutem Alkohol um. Das so erhaltene 1. 3-Dimethyl- 8-piperidhylmethylxanthin bildet farblose Nadeln, die bei   203"C schmelzen. Sie   sind leicht löslich in Wasser, Alkalien und Säuren, löslich in Alkohol und fast unlöslich in Äther.



   <Desc / Clms Page number 1>
 
 EMI1.1
 
 EMI1.2
 

 <Desc / Clms Page number 2>

 
 EMI2.1
 300 parts of a B per cent sodium ethylate solution heated on a water bath for two hours. After cooling, the amount of concentrated hydrochloric acid corresponding to the sodium is carefully added, the precipitated common salt is filtered off, the alcohol is removed by distillation and the residue is recrystallized from absolute alcohol. The 1,3-dimethyl-8-piperidhylmethylxanthine thus obtained forms colorless needles which melt at 203 ° C. They are easily soluble in water, alkalis and acids, soluble in alcohol and almost insoluble in ether.

 

Claims (1)

Statt der in den Beispielen erwähnten Pyrimidine können auch andere Pyrimidinderivate wie sie durch Umsetzung der halogenazidylierten o-Diaminopyrimidinderivate mit anderen Aminen, wie z. B. Monomethylamin, Benzylamin, Anilin, Toluidin, Piperazin, Pyrrol erhalten werden, verwendet werden. Der Ringschluss kann auch durch andere alkalische Kondemsationsmittel, wie Barythydrat, Magnesia, vollzogen werden, PATENT-ANSPRUCH : Verfahren zur Darstellung von basischen Purinderivaten der allgemeinen Formel : EMI2.2 (worin X : Wasserstoff oder Alkyl, Y : Sauerstoff, schwefel, den Imino- oder Cyaniminorest, EMI2.3 Instead of the pyrimidines mentioned in the examples, other pyrimidine derivatives such as those obtained by reacting the haloazidylated o-diaminopyrimidine derivatives with other amines, such as. B. monomethylamine, benzylamine, aniline, toluidine, piperazine, pyrrole can be used. The ring closure can also be carried out using other alkaline condensation agents, such as barythydrate, magnesia, PATENT CLAIM: Process for the preparation of basic purine derivatives of the general formula: EMI2.2 (where X: hydrogen or alkyl, Y: oxygen, sulfur, the imino or cyanimino radical, EMI2.3
AT44373D 1908-02-22 1909-02-13 Process for the preparation of basic purine derivatives. AT44373B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE44373X 1908-02-22

Publications (1)

Publication Number Publication Date
AT44373B true AT44373B (en) 1910-10-10

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ID=5624642

Family Applications (1)

Application Number Title Priority Date Filing Date
AT44373D AT44373B (en) 1908-02-22 1909-02-13 Process for the preparation of basic purine derivatives.

Country Status (1)

Country Link
AT (1) AT44373B (en)

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