1. R. Noyori and Y. Hayakawa, Org. React.,29, 163 (1983).
2. V. V. Shchepin, V. V. Fotin, S. V. Sinani, and G. V. Mustafaeva, Zh. Org. Khim.,24, No. 2, 313 (1988).
3. V. V. Shchepin, N. Yu. Russkikh, and I. I. Lapkin, Zh. Org. Khim.,23, No. 3, 503 (1987); No. 5, 334 (1987); No. 7, 1454 (1987).
4. M. Kuroboshi and T. Ishihara, Tetrahedron Lett.,28., 6481 (1987).
5. H. Chikashita, H. Ide, and K. Itoh, J. Org. Chem.,51, 5400 (1986).