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  • 1
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: The X-ray structural investigation of the 1,6-dipole 1 reveals an intramolecular S-N contact of 236 pm, which indicates stabilization by no-bond resonance. In reactions with the heterocumulenes 2-5, the thiazoline ring of 1 is opened to give the heterocycles 7a-f, 8e. The reaction of bis(trimethylsilyl)thioketene (6) takes a deviating pathway: the primary adduct 15 gives a sigmatropic 1,3 shift of the dimethylamino group to yield product 16b. This constitution is derived from an X-ray structural study of the degradation product 17.
    Notes: Die Röntgenstrukturanalyse des 1,6-Dipols 1 zeigt einen intramolekularen S-N-Kontakt von 236 pm, der auf Stabilisierung durch „no-bond‘-Resonanz weist. In Umsetzungen mit den Heterocumulenen 2-5 wird der Thiazolin-Ring von 1 geöffnet; es resultieren die Heterocyclen 7a-f, 8e. Abweichend reagiert Bis-(trimethylsilyl)thioketen (6): das Primäraddukt 15 ergibt über eine 1,3-Verschiebung der Dimethylamino-Gruppe das Produkt 16b. Dessen Konstitution folgt aus der Röntgenstrukturanalyse des Abbauprodukts 17.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
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