1. For some recent reviews on this subject, see: (a) K. Soai, Enantiomer 4 (1999) 591;
2. (b) L. Pu, Chem.-Eur. J. 5 (1999) 2227;
3. (c) K. Soai, T. Shibata, in: P. Knochel, P. Jones, (Eds.), Organozinc Reagents, Oxford University Press, Oxford, UK, 1999, pp. 245–261;
4. (d) J.A. Marshall, Chemtracts: Org. Chem. 5 (1992) 158;
5. (e) K. Soai, S. Niwa, Chem. Rev. 92 (1992) 833.