Discussion Few (perfluoroalky1)-benzenes other than trifluoromethylbenzene have been synthesized. In an attempt to synthesize l-heptafluoropropylbenzene, heptafluoro-1- iodopropane was treated with pheriylmagnesium bromide, phenyllithi~ m,~ phenylsodium and phenylcalcium iodide. However, no evidence of coupling was observed, the predominant reaction in each case being an exchange. 1-Heptafluoropropylbenzene was ...