1. M. Braun in Advances in Carbanion Chemistry, Vol. 1. V. Snieckus, ed., JAI Press, Greenwich, Connecticut, 1992.
2. D. A. Evans, J. V. Nelson, and T. R. Taber, Top. Stereochem. 13:1 (1982).
3. A. S. Franklin and I. Paterson, Contemp. Org. Synth.
1:317 (1994).
4. C. H. Heathcock, in Comprehensive Carbanion Chemistry, E. Buncel and T. Durst, eds., Elsevier, Amsterdam, 1984.
5. C. H. Heathcock, in Asymmetric Synthesis, Vol 3, J. D. Morrison, ed., Academic Press, New York, 1984.