One area of current interest is the use of the sulfonimide function to prepare fluorinated ionic liquids for the application as electrolytes in secondary lithium batteries [1]. 1,3,5-Tris(α,β,β-trifluorovinyl)benzene is a versatile starting material for trifunctional ionic liquids and can be obtained by the reaction of trifluorovinylzincbromide with 1,3,5-tribromobenzene in the presence of catalytic amounts of tetrakis(triphenylphosphine)palladium [2]. Subsequent bromination and halogen-halogen-exchange of the secondary bromine atom leads to tris(2-bromo-1,1,2,2-tetrafluoroethyl)benzene. A common method for bromine-fluorine-exchange is the Swarts reaction. Antimony trifluoride and a catalytic amount of chlorine gas or antimony pentachloride were used. Compared to the monofunctional 2-bromo-1,1,2,2-tetrafluoroethylbenzene, which was used as a model compound, the fluorination of the trifunctional compound requires more harsh conditions. [1] P. Hallac, O. Geiculescu, R. Rajagopal, C. Topping, S. Craeger, D. DesMarteau, Chimica Oggi (Chemistry Today) 2007, submitted. [2] L. A. Ford, D. D. DesMarteau, Chem. Commun. 2003, 2596-2597.