Mild Oxidation of Diarylacetylenes to 1,2-Diketones Using Oxone in Trifluoroacetic Acid

[摘要]：A variety of 1,2-diaryldiketones were synthesized in 15-90% yields by treatment of diarylacetylenes with Oxone as the oxidant in trifluoroacetic acid. Oxidation of 1-nitro-2-(phenylethynyl)benzene and 2,4'-(ethyne-1,2-diyl)bis(nitrobenzene) furnished 1-benzoylbenzo[c]isoxazol-3(1H)-one and benzo[c]isoxazol-3-yl(4-nitrophertyl)methanone as the major products, respectively.

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