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  • 1
    ISSN: 0170-2041
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Carbene Reactions, XV1).  -  Attempted Generation of Tricarbonylcycloheptatrienylidene ChromiumFluorodesilylation of trimethylsilyltropylium ion (5b) generated cycloheptatrienylidene (6), which could be trapped by dimethyl fumarate. In the absence of trapping agents 6 dimerized to heptafulvalene (8). The analogous treatment of tricarbonyl(trimethylsilyltropylium) chromium (4b) led to the dihydrodimer 13 of tricarbonylcycloheptatrienylidene chromium (3).
    Notes: Cycloheptatrienyliden (6) konnte aus dem Trimethylsilyltropylium-Ion (5b) durch Fluordesilylierung freigesetzt und durch Addition an Fumarsäureester abgefangen werden. In Abwesenheit von Abfängern dimerisierte 6 zu Heptafulvalen (8). Bei der übertragung dieser Reaktion auf das Tricarbonyl(trimethylsilyltropylium)chrom (4b) entstand das Dihydrodimere 13 von Tricarbonylcycloheptatrienylidenchrom (3).
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
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