“…5,6 As one of the main targets of difunctionalization of multiple carbon–carbon bonds, vicinal diketones are important precursors for numerous biologically functional molecules and are broadly utilized for the construction of complex structures in organic synthesis. 7 As outlined in Scheme 1, an array of methods for the preparation of vicinal diketones are currently known by means of direct oxidation on single substrates such as stilbenes (Scheme 1A), 8 1,3-diketones (Scheme 1B), 9 alkynones (Scheme 1C), 10 internal alkynes (Scheme 1D) 11 and some other precursors. 12 Alongside the direct oxygenation on one precursor, the reactions involving oxygenation and coupling of two different components have also been proved to be applicable for vicinal diketone synthesis.…”