“…[24] In summary,w eh ave developed ac onvenient two-step method for the preparation of 2,2'-diiodobiaryls from readily accessible 2-iodobiaryls through oxidative cyclization/Cucatalyzed iodinative ring-opening sequences.E ven though cyclic diaryliodonium intermediates have previously been reported to serve as direct precursors to carbazoles and some other bridged biaryl compounds, [19,30] the method presented herein should substantially enhance their utility for the synthesis of aw ide range of heterofluorenes.I ndeed, the versatility of this method has been demonstrated by the preparation of novel tetraiodoteraryls and their conversion into various ladder-type p-conjugated systems.F urthermore, the present method may also be useful for the diversification of Kitas 2,2'-diiodobiaryl-based organocatalysts for oxidation reactions. [24] In summary,w eh ave developed ac onvenient two-step method for the preparation of 2,2'-diiodobiaryls from readily accessible 2-iodobiaryls through oxidative cyclization/Cucatalyzed iodinative ring-opening sequences.E ven though cyclic diaryliodonium intermediates have previously been reported to serve as direct precursors to carbazoles and some other bridged biaryl compounds, [19,30] the method presented herein should substantially enhance their utility for the synthesis of aw ide range of heterofluorenes.I ndeed, the versatility of this method has been demonstrated by the preparation of novel tetraiodoteraryls and their conversion into various ladder-type p-conjugated systems.F urthermore, the present method may also be useful for the diversification of Kitas 2,2'-diiodobiaryl-based organocatalysts for oxidation reactions.…”