Dj. Burton et al., THE PREPARATION, STABILITY AND REACTIVITY OF PERFLUOROBENZYL-CADMIUM AND PERFLUOROBENZYL-COPPER REAGENTS, Journal of fluorine chemistry, 66(1), 1994, pp. 23-24
Perfluorobenzyl bromide reacts readily with acid-washed cadmium powder
in DMF at room temperature to give the F-benzylcadmium reagent. Metat
hesis of the F-benzylcadmium reagent with Cu(I)Br at -40-degrees-C to
-35-degrees-C in DMF affords the F-benzylcopper reagent. The formation
of the F-benzylcadmium and -copper reagents was confirmed by F-19 NMR
spectral analysis of the reaction mixture and chemical transformation
s.