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  • 1970-1974  (2)
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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1973 (1973), S. 1457-1466 
    ISSN: 0075-4617
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: 1,6-Cyclization of Phenyliminomethylimino Cumulenes: Formation of Quinazoline DerivativesThe reaction of N2-arylamidines 1 with N-tosylisocyanodichloride gives the quinazoline derivatives 5. Addition of the compounds 1 to chloral followed by treatment with acetic anhydride yields the quinazolines 9, 10 and 13.
    Notes: Die Reaktion von N2-Arylamidinen 1 mit N-Tosylisocyandichlorid 4 führt zu den Chinazolinderivaten 5. Bei der Umsetzung der Verbindungen 1 mit Chloral und nachfolgender Behandlung mit Acetanhydrid werden die Chinazoline 9, 10 und 13 erhalten.
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 0075-4617
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Chemistry of Sulfur Diimides, IV1). - Dehydrogenations by N,N′-Bis(p-toluenesulfonyl)- sulfur DiimideN,N′-Bis(p-toluenesulfonyl)sulfur diimide (1) dehydrogenates hydrazo compounds to azo compounds, hydroquinones and pyrocatechol to quinones, thiols to disulfides and dihydronaphthalenes to naphthalenes, in most cases under mild conditions. The reaction of 1 with benzyl alcohols and oximes resembles an SNi- or SNi′-process.
    Notes: N,N-Bis(p-toluolsulfonyl)schwefeldiimid (1) dehydriert, meist unter milden Bedingungen, Hydrazoverbindungen zu Azoverbindungen, Hydrochinon und Brenzcatechin zu Chinonen, Thiole zu Disulfiden sowie Dihydronaphthaline zu Naphthalinen. Die Umsetzung von 1 mit Benzylalkoholen und Oximen erfolgt nach Art einer SNi- oder SNi′-Reaktion.
    Type of Medium: Electronic Resource
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