Perfluoro Organomagnesium Reagents

The exchange reactions of polyhalogenated arenes have been investigated by Tam- 

Biphenyls (entry 1) [84] or styrene derivatives (entries 2-4) [85], p-terphenyls (entry 5) [86], and m-terphenyls (entries 6-9) [87, 88] are synthesized from 2-bro-mo-1-iodobenzene, 2,5-dibromo-l,4-diiodobenzene, and 2,6-dibromo- or 2,6-di-chloro-1-iodobenzene, respectively, in moderate to good yields. 

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