Catalytic C-C Bond Formation through Selective Activation of C-F Bonds N-Heterocyclic Carbenes, Part 30. This work was supported by the Deutsche Forschungsgemeinschaft (DFG), the Bayerischer Forschungsverbund Katalyse (FORKAT), and the Fonds der Chemischen Industrie (studentships for V.P.W.B. and T.W.). We thank K. Öfele, TU München, and F. L. Taw, UNC Chapel Hill, for helpful discussions. Part 29: W. A. Herrmann, V. P. W. Böhm, C. W. K. Gstöttmayr, M. Grosche, C.-P. Reisinger, T. Weskamp, J. Organomet. Chem. 2001, 617/618, 616-628.