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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1977 (1977), S. 1249-1266 
    ISSN: 0075-4617
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Synthesis and Reactions of 2-Chloro-1,3-thiazin-4-ones2-Chloro-1,3-thiazin-4-ones 2 and 4 are prepared by cyclization of 2-thiocyanatocarboxylic acid chlorides 1 and 3, respectively, with hydrogen chloride. The compounds 2 and 4 are cyclic, azavinylogous acid chlorides of ambivalent character and react with amines undergoing substitution of chlorine or fragmentation. The structure of the 2-amino-1,3-thiazin-4-ones 9 and 14 and the aromatic character of the 1,3-thiazin-4-ones 2 and of the 1,3-thiazinium salts 18 are investigated.
    Notes: 2-Chlor-1,3-thiazin-4-one 2 und 4 sind durch Cyclisierung von 2-Thiocyanatocarbonsäurechloriden 1 bzw. 3 mit Chlorwasserstoff zugänglich. Sie besitzen als cyclische, azavinyloge Säurechloride ambivalenten Charakter und reagieren mit Aminen unter Substitution des Chlors oder Fragmentierung. Die Struktur der 2-Amino-1,3-thiazin-4-one 9 und 14 sowie der aromatische Charakter der 1,3-Thiazin-4-one 2 und der 1,3-Thiaziniumsalze 18 werden untersucht.
    Additional Material: 6 Tab.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für die chemische Industrie 85 (1973), S. 155-162 
    ISSN: 0044-8249
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Durch Cyclisierung von ω-Cyan-carbonsäurehalogeniden in Gegenwart von Halogenwasserstoffen in aprotonischen Lösungsmitteln lassen sich fünf-, sechs- und siebengliedrige Aza-, Diaza- und Thiazaheterocyclen darstellen. Als Zwischenprodukte dieser breit anwendbaren, neuartigen Heterocyclen-Synthese fungieren Nitril-Halogenwasserstoff-Addukte. - Nicht eingegangen wird auf die über Imidsäureester oder Amide verlaufenden acylierenden Cyclisierungsreaktionen von Nitrilen in protonischen Medien.
    Additional Material: 9 Tab.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für die chemische Industrie 82 (1970), S. 548-549 
    ISSN: 0044-8249
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Angewandte Chemie International Edition in English 9 (1970), S. 523-524 
    ISSN: 0570-0833
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Angewandte Chemie International Edition in English 12 (1973), S. 119-126 
    ISSN: 0570-0833
    Keywords: Heterocycles ; Intramolecular reactions ; Acylation ; Nitrile hydrogen halide adducts ; Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Five-membered, six-membered, and seven-membered aza-, diaza-, and thiazaheterocycles can be prepared by cyclization of. ω-cyano carboxylic acid halides in the presence of hydrogen halides in aprotic solvents. Nitrile-hydrogen halide adducts occur as intermediates in this novel heterocycle synthesis of wide application. The acylating cyclizations of nitriles in protonic media, which proceed via imidic esters or amides, are not discussed.
    Additional Material: 9 Ill.
    Type of Medium: Electronic Resource
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