Abstract
Oxidation of tetrakis-diethylaminocyclopentadienone iron tricarbonyl (1) electrochemically or with nitrosonium hexafluorophosphate afforded the dication of tetrakisdiethylaminocyclopentadienone (3). Oxidation of 1 with bromine and aqueous workup gave diethylaminocyclobutenedione-N,N-diethylcarboxamide (4), which was also formed by the hydrolysis of 3. The structures of the products were confirmed by X-ray crystallography.
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