1. Solomatina, O.V., Yarova, O.I., and Barkhash, V.A., Zh. Org. Khim., 2005, vol. 41, no. 2, p. 167.
2. Lazurin, E.A., Voronenkov, V.V., and Osokin, Yu.G., Usp. Khim., 1977, vol. 46, no. 10, p. 1739.
3. Kas’yan, L.I., Usp. Khim., 1998, vol. 67, no. 4, p. 299.
4. Kas’yan, L.I., Kas’yan, A.O., and Golodaev, E.A., Zh. Org. Khim., 2008, vol. 44, no. 2. p. 167.
5. Silva, L.F., Tetrahedron, 2002, vol. 58, no. 45, p. 9137.