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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: Reaction of Cyclopropenones with ketene Acetals, II1) Formation of Labile 1:1-Adducts from Diphenylcyclopropenone and Diphenylcyclopropenethione with Ketene Acetals2-4The reaction of diphenylcyclopropenone (1) and diphenylcyclopropenethione (2) with ketene acetals at room temperature yields 2-azoniabicyclo[3.1.0.]hex-3-en-olates 5. The structure of 5f has been determined by X-ray diffraction techniques. Spectral data are in accord with the structure proposal 5. Compounds 5 can be protonated and alkylated; with nucleophiles opening of the 5-membered ring occurs.
    Notes: Die Reaktion von Diphenylcyclopropenon (1) und Diphenylcyclopropenthion (2) mit Ketenacetalen 3 bzw. 4 liefert bei Raumtemperatur 2-Azoniabicyclo[3.1.0]hex-3-en-3-olate 5. Die Struktur konnte für 5f durch Röntgenstrukturanalyse bewiesen werden. Die spektroskopischen Daten sind mit dem Konstitutionsvorschlag 5 im Einklang. Die Ammonium-acylide lassen sich protonieren und alkylieren; mit nucleophilen Reagentien erfolgt die Öffnung des Fünfrings in den Bicyclen 5.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
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