1. For a review on aromatic metalation, see: Gray, M.; Tinkl, M.; Snieckus, V. In Comprehensive Organometallic Chemistry II; Abel, E. W.; Stone, F. G. A.; Wilkinson, G., Eds.; Pergamon: Exeter, 1995; Vol. 11, p. 2.
2. (a) For a review, see: Parham, W. E.; Bradsher, C. K. Acc. Chem. Res. 1982, 15, 305.
3. (b) For some more recent examples see Ref. 1 and 4.
4. (a) Negishi, N.; Chaneiry, D. In Comprehensive Organic Functional Group Transformations; Katrizky, A. R.; Meth-Cohn, O.; Rees, C. W., Eds.; Pergamon: Cambridge, 1995; Vol. 2, p. 951.
5. (b) Schlosser, M. In Organometallics in Synthesis; Schlosser, M., Ed.; John Wiley & Sons: Chichester, 1995; p. 2.