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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 109 (1976), S. 1625-1637 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Synthesis and Reactions of 2,4,5-Trichloroimidazole and 2,2,4,5-Tetrachloro-2H-imidazoleVarious routes of synthesis are shown for the title compounds 3a and 4. A simple, high-yield preparation of the trichloroimidazole 3a proceeds via the tetrachloroimidazole 4 and its subsequent reduction. A number of reactions of these two chloroimidazoles is described. Tetrachloroimidazole 4, in particular, proves to be a reactive intermediate for new syntheses in the imidazole series.
    Notes: Für die Titelverbindungen 3a und 4 werden verschiedene Synthesewege aufgezeigt. Eine einfache und ergiebige Darstellung des Trichlorimidazols 3a verläuft über das Tetrachlorimidazol 4 und dessen anschließende Reduktion. Eine Reihe von Reaktionen dieser beiden Chlorimidazole werden beschrieben. Insbesondere das Tetrachlorimidazol 4 erweist sich als reaktives Zwischenprodukt für neue Synthesen in der Imidazolreihe.
    Additional Material: 4 Tab.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 109 (1976), S. 1638-1642 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Synthesis and Reactions of Perchloro-2H-imidazolesThe hydrochlorides of mono-(2a-c), di-(4a), and trisubstituted imidazoles (4b,c) are chlorinated under anhydrous conditions to give the reactive perchloro-imidazoles 3 und 5. These react with nucleophilics like anilines or alcohols to form the corresponding substituted 4H-imidazoles 6-9.
    Notes: Bei der Chlorierung der Hydrochloride von mono-(2a-c), di-(4a) und trisubstituierten Imidazolen (4b,c) unter wasserfreien Bedingungen werden die reaktiven Perchlor-imidazole 3 und 5 erhalten. Diese reagieren mit Nucleophilen, wie z. B. Anilinen oder Alkoholen, zu den entsprechenden substituierten 4H-Imidazolen 6-9.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 110 (1977), S. 3226-3227 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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