1. J. Klein, inThe Chemistry of The Carbon-Carbon Triple Bond, Ed. S. Patai, Wiley, New York, 1978, Part 1, 343.
2. J.-L. Moreau, inThe Chemistry of Ketenes, Allenes and Related Compounds, Ed., S. Patai, Wiley, New York, 1980, Part 1, 363.
3. J.F. Bielmann and J.-B. Ducep,Org. React., 1982, 27, 1.
4. R. Epsztein, inComprehensive Carbanion Chemistry, Eds. E. Buncel, T. Durst, Elsevier, Amsterdam, 1984, Part B, 107.
5. H. Jamamoto, inComprehensive Organic Synthesis, Eds. B. M. Trost, I. Fleming, Pergamon Press, Oxford, 1991, Vol. 2, 81.