References

1. Fioravanti, S.; Loreto, M. A.; Pellacani, L.; Tardella, P. A. Tetrahedron: Asymmetry 1990, 1, 931.
2. Hickmott, P. W. in The chemistry of enamines, ed. Rappoport, Z., Wiley, Chichester, UK; 1994, pt 1, ch. 14, pp. 727-871.
3. Subba Rao, O.; Lwowski, W. J. Heterocycl. Chem. 1980, 17, 187.
4. Subbaraj, A.; Subba Rao, O.; Lwowski, W. J. Org. Chem. 1989, 54, 3945.
5. Fioravanti, S.; Pellacani, L.; Tardella, P. A. Electronic Conference on Trends in Organic Chemistry (ECTOC-1), June 12-July 7 1995; http://www.ch.ic.ac.uk/ectoc/papers/41/pelhome.html; CD-ROM Version, ed. Rzepa, H. S.; Goodman, J. M.; Leach, C., ISBN 0 85404 899 5, Royal Society of Chemistry, 1996.
6. Fusco, R.; Bianchetti, G.; Pocar, D. Gazz.Chim. Ital. 1961, 91, 933; Kadaba, P. K.; Stanovnik, B.; Tisler, M. in Advances in Heterocyclic Chemistry, Academic, 1984, vol. 37, p. 217.
7. Bäckvall, J. E.; Löfström, C.; Maffei, M.; Langer, V. Tetrahedron Lett. 1992, 33, 2417.