Abstract
Based on the formation of 2,5-bis(trimethylsilyl)-zirconacyclopentadienes from two silylalkynes with Cp2ZrBu2 and the Cu-mediated formation of 1,4-disilylbenzene via the cycloaddition of zirconacyclopentadienes to disubstituted alkynes, a selective synthesis of 1,4-dialkyl(aryl)-hexa-substituted benzenes was achieved followed by iodination and coupling reaction. The coupling reactions were carried out with either organolithium reagent or organozinc reagent(Negishi coupling), depending on the electrophilic species.
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