A palladium-catalyzed disilylation reaction of 2-iodobiphenyls with hexamethyldisilane via trapping transient dibenzopalladacyclopentadienes has been achieved. Diversely functionalized 2,2′-bis(trimethylsilyl)biphenyls have been synthesized in good to excellent yields under mild conditions. Moreover, 2,2′-bis(trimethylsilyl)biphenyls readily transformed into 2,2′-dihalobiphenyls, which could be used to synthesize carbazole, dibenzo[b,d]thiophene and dibenzo[b,d]selenophene polycyclic heteroarenes.

中文翻译：

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Pd催化的二烯丙基化：通过用六甲基乙硅烷捕获瞬态二苯并钯四环戊二烯来制备2,2'-双（三甲基甲硅烷基）联苯的有效途径†

通过捕获瞬态二苯并钯铝环戊二烯，实现了2-碘联苯与六甲基乙硅烷的钯催化的二烯化反应。已经在温和条件下以良好至优异的产率合成了功能多样的2,2'-双（三甲基甲硅烷基）联苯。此外，2,2'-双（三甲基甲硅烷基）联苯易于转化为2,2'-二卤代联苯，可用于合成咔唑，二苯并[ b，d ]噻吩和二苯并[ b，d ]硒烯多环杂芳烃。