Synthesis of Polyaromatic Functional Molecules

Transition-metal-catalyzed cyclotrimerizations are powerful tools for the construction of polyaromatic compounds, which are potential building blocks for functional materials [1]. Specifically, ruthenium-catalyzed cyclotrimerizations have been applied to the synthesis of polyaromatic functional molecules, as summarized in this section. 

which was prepared from diynylboronate 164 via ruthenium-catalyzed cycloaddition [48b]. Finally, the resulting biaryl components 163 and 165 were subjected to palladium-catalyzed tandem Suzuki-Miyaura coupling to furnish hexaphenylene 

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