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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 114 (1981), S. 684-698 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Reactions of Polychloro-1,3-butadienes and Polychlorobutenes with ThiolatesOn treatment of perchlorobutadiene (1), of the pentachlorobutadienes 10 and 18, or of the hexachlorobutenes 21, 25 and 32 with thiolates in DMSO a very fast and extensive replacement of chlorine is observed even at room temperatur. The reactions 1→7, 8, 10→11, 18→19, and 25, 32→30 lead to butadienes with five or four organylthio groups. Especially noticeable is the exclusive formation of the butatriene 4d from 1 and 2-methyl-2-propanethiolate. Products with less than four organylthio groups arise with thiolates in ethanol (1→2, 3, 10→14) and 21→22 exceptionally in DMSO. The sequence of reactions in the Cl→SR exchange cannot be verified. Dechlorination in the beginning is assumed. Further possible steps are pointed out.
    Notes: Bei der Behandlung des Perchlorbutadiens (1), der Pentachlorbutadiene 10 und 18 sowie der Hexachlorbutene 21,25 und 32 mit Thiolaten in DMSO beobachtet man einen sehr schnellen und weitgehenden Chloraustausch schon bei Raumtemperatur. Die Reaktionen 1 → 7, 8, 10 → 11, 18 → 19 und 25, 32 → 30 führen zu Butadienen mit fünf oder vier Organylthiogruppen. Besonders hervorhebenswert ist die ausschließliche Bildung des Butatriens 4d aus 1 mit 2-Methyl-2-propanthiolat. Produkte mit weniger als vier Organylthiogruppen entstehen mit Thiolaten in Ethanol (1→2, 3, 10→14) und 21→22 ausnahmsweise in DMSO. Die Aufeinanderfolge der den Cl→SR-Austausch bewirkenden Reaktionen ist nicht festlegbar. Es wird für wahrscheinlich gehalten, daß der Austausch mit einer Dechlorierung beginnt. Weitere mögliche Reaktionsschritte werden angedeutet.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1987 (1987), S. 1009-1011 
    ISSN: 0170-2041
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Mono- and Bis(aryl/alkylthio)butenynes, Bis- and Tris(aryl/alkylthio)butadienes from Pentachlorobutadiene and HexachlorobuteneCompounds 3b, 3e-g, 4d, 4e-g, 5b, 5d, 6c, 6e-g, 7c, and 9e-g have been obtained from 2H-pentachlorobutadiene (1) and thiolates in water-containing ethanol solutions at room temperature. Hexachlorobutene (8) and alkanethiolates give compounds 3e, 4e, and 9e-g. Compounds 11b, 3b, 5b, and 6b could be prepared from hexachlorobutene (10) under the same conditions.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1984 (1984), S. 1873-1877 
    ISSN: 0170-2041
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Thio-substituted Butynes and Butadienes from Polychlorobutenes and ThiolsHexachlorobutene (1) yields compounds 2-4 with thiolates in water-containing ethanol solutions at room temperature. Reaction of 2b with potassium tert-butoxide yields compound 5b. The tris(arylthio) derivative 4b is formed by reaction of 3b with sodium 4-(methylthio)phenolate in DMSO. A tris(arylthio)-substituted butatriene 7b is formed by HCl elimination from 4b. The butatriene 7b obtained partly isomerizes to give the tris(arylthio)butenyne 8b at room temperature.
    Type of Medium: Electronic Resource
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