1. For reviews, see: (a) Tomioka, K.; Nagaoka, Y. In Comprehensive Asymmetric Catalysis; Springer: New York, 1999; Vol. 1, Chapter 31, p. 1105;
2. (b) Noyori, R. Asymmetric Catalysis in Organic Synthesis; VCH: New York, 1993;
3. (c) Prelmutter, P. Conjugate Addition Reactions in Organic Synthesis; Pergamon: Oxford, 1992;
4. For reviews, see: (a) Tomioka, K.; Nagaoka, Y. In Comprehensive Asymmetric Catalysis; Springer: New York, 1999; Vol. 1, Chapter 31, p. 1105; (b) Noyori, R. Asymmetric Catalysis in Organic Synthesis; VCH: New York, 1993; (c) Prelmutter, P. Conjugate Addition Reactions in Organic Synthesis; Pergamon: Oxford, 1992; (d) Advanced Asymmetric Synthesis; Stephenson, G. R., Ed.; Chapman and Hall: London, 1996; (e) Rossiter, B. E.; Swingle, H. M. Chem. Rev. 1992, 92, 771–806; (f) Krause, N. Angew. Chem., Int. Ed. Engl. 1998, 37, 283–285; (g) Krause, N.; Röder, A. H. Synthesis 2001, 2, 171–196.
5. (e) Rossiter, B. E.; Swingle, H. M. Chem. Rev. 1992, 92, 771–806;