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  • 1
    Electronic Resource
    Electronic Resource
    Phosphorus Pentoxide in Organic Synthesis, XVIII. Phosphorus Pentoxide and Secondary Amine Mixtures in a New Synthesis of N6,N6-Dialkyl- and N6-Alkyl,N6-aryl-9H-purin-6-amines (1985)
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1985 (1985), S. 1223-1227 
    Details
    ISSN: 0170-2041
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Phosphorpentoxid in der Organischen Synthese, XVIII1). - Eine neue Synthese von N6,N6-Dialkyl- und N6-Alkyl,N6-aryl-9H-purin-6-aminen unter Verwendung von Phosphorpentoxid/sekundäres Amin-GemischenEs wird die Herstellung einer Reihe von N6,N6-disubstituierten 9H-Purin-6-aminen 2a-i aus 5-Acetamido-6-amino-2-methylpyrimidin-4(3H)-on (1) und sekundären Aminen oder entsprechenden Hydrochloriden in Gegenwart von Phosphorpentoxid und Triethylaminhydrochlorid beschrieben.
    Notes: A series of N6,N6-disubstituted 9H-purin-6-amines 2a-i was prepared from 5-acetamido-6-amino-2-methylpyrimidin-4(3H)-one (1) and a secondary amine or its hydrochloride in the presence of phosphorus pentoxide and triethylamine hydrochloride.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jlac.198519850613
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Annulated 1,2,3-triazoles, I. Synthesis of 8-Azapurin-6-ones and 8-Azapurin-6-imines from Ethyl 5-Acetylamino-1,2,3-triazole-4-carboxylates (1984)
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1984 (1984), S. 1848-1859 
    Details
    ISSN: 0170-2041
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Anellierte 1,2,3-Triazole, I.  -  Synthese von 8-Azapurin-6-onen und 8-Azapurin-6-iminen aus 5-Acetylamino-1,2,3-triazol-4-carbonsäure-ethylesternDie neuen 8-Azapurin-6-one 3 und die entsprechenden 8-Azapurin-6-imine 4 werden durch Cyclokondensation von 5-Acetylamino-1,2,3-triazol-4-carbonsäure-ethylestern 2 mit Amin-hydrochloriden in Gegenwart von Phosphorpentoxid und N,N-Dimethylcyclohexylamin hergestellt. Für die Bildung von 3 und 4 wird ein Reaktionsmechanismus vorgeschlagen. Einige der Produkte 3 wurden auf ihre fungizide Wirksamkeit getestet.
    Notes: The new 8-azapurin-6-ones 3 and the corresponding 8-azapurin-6-imines 4 are prepared by cyclocondensation of ethyl 5-acetylamino-1H-1,2,3-triazole-4-carboxylates 2 with amine hydrochlorides in the presence of phosphorus pentoxide and N,N-dimethylcyclohexylamine. A reaction pathway is proposed for the formation of 3 and 4. Various products 3 have been tested for fungicide activity.
    Additional Material: 4 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jlac.198419841109
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    Paper (German National Licenses)
    Fulltext
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