The synthesis of some complexed ketones or sulfones by oxidation of η-arene-η-cyclopentadienyliron cations or η-arenedi-η-cyclopentadienyliron dications |
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Authors: | C C Lee R L Chowdhury A Pirko R G Sutherland |
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Institution: | Department of Chemistry, University of Saskatchewan, Saskatoon, Saskatchewan, S7N 0W0 Canada |
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Abstract: | Di-η5-cyclopentadienyliron complexed dications of 9,10-dihydroanthracene, xanthene, thioxanthene and diphenylmethane derived from ligand exchange reactions but without their prior isolation were oxidized with KMnO4 to give, respectively, the dications of anthraquinone, xanthone, thioxanthone and benzophenone, isolated as their dihexafluorophosphate salts. Cyclopentadienyliron complexes of arenes containing a sulfide function were oxidized by m-chloroperbenzoic acid to the corresponding complexed sulfones, and sulfones prepared in this way include the hexafluorophosphate salt of the η6-p-tolysulfonylbenzene, thioxanthene-10,10-dioxide, 9,9-dimethylthioxanthene-10,10-dioxide or dibenzothiophene-9,9-dioxide-η5-cyclopentadienyliron cation. |
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