1. I. Fleming,Frontier Orbitals and Organic Chemical Reactions, Wiley, New York, 1976; K. Fukui,Topics Curr. Chem., 1970,15, 1; G. Klopman,J. Am. Chem. Soc., 1968,90, 223.
2. F. S. Dyachkovskii, A. K. Shilova, and A. E. Shilov,J. Polym. Sci., Pt. C. 1967,16, 2333; H. H. Brintzinger, D. Fischer, R. Mülhaupt, B. Rieger, and R. Waymouth,Angew. Chem., Int. Ed. Engl., 1995,34, 1143; W. Kaminsky,J. Chem. Soc., Dalton Trans., 1998, 1413.
3. V. V. Strelets,Coord. Chem. Rev., 1992,114, 1; G. V. Loukova and V. V. Strelets,J. Organomet. Chem., 2000, in press.
4. a) G. V. Loukova, O. N. Babkina, T. A. Bazhenova, N. M. Bravaya, and V. V. Strelets,Izv. Akad. Nauk. Ser. Khim., 2000, 59 [Russ. Chem. Bull., Int. Ed., 2000,49, 60 (Engl. Transl.)]; b) O. N. Babkina, T. A. Bazhenova, N. M. Bravaya, V. V. Strelets, M. Yu. Antipin, and K. A. Lysenko,Izv. Akad. Nauk. Ser. Khim., 1996, 1529 [Russ. Chem. Bull., 1996,45, 1458 (Engl. Transl.)]; c) T. A. Bazhenova, M. Yu. Antipin, O. N. Babkina, N. M. Bravaya, K. A. Lysenko, and V. V. Strelets,Izv. Akad. Nauk, Ser. Khim., 1997, 2161 [Russ. Chem. Bull., 1996,46, 2048 (Engl. Transl.)].
5. M. J. Burk, W. Tumas, M. D. Ward, and D. R. Wheeler,J. Am. Chem. Soc., 1990,112, 6133; M. Schmittel and R. Söllner,J. Chem. Soc., Chem. Commun., 1998, 565.