1. For recent comprehensive reviews on the reaction of α-diazo carbonyl compounds, see: (a) Doyle, M. P.; McKervey, M. A.; Ye, T. Modern Catalytic Methods for Organic Synthesis with Diazo Compounds; Wiley-Interscience: New York, 1998.
2. (b) McKervey, M. A.; Ye, T. Chem. Rev. 1994, 94, 1091.
3. (a) Lesbre, M.; Buisson, R. Bull. Soc. Chim. Fr. 1957, 1204.
4. (b) Padwa, A.; Eastman, D. J. Org. Chem. 1969, 34, 2728.
5. (c) Doyle, M. P.; Taunton, J.; Oon, S.-M.; Liu, M. T. H.; Soundararajan, N.; Platz, M. S.; Jacson, J. E. Tetrahedron Lett. 1988, 29, 5863.