1. Hanson, J.R., Comprehensive Organic Chemistry, Barton, D. and Ollis, W.D., Eds., Oxford: Pergamon, 1979, vol. 6. Translated under the title Obshchaya organicheskaya khimiya, Moscow: Khimiya, 1986, vol. 11, p. 482.
2. Huisman, H.O., Pure Appl. Chem., 1977, vol. 49, p. 1307.
3. Cainelli, G. and Cardillo, G., Acc. Chem. Res., 1981, vol. 14, p. 89.
4. Constantino, M.G. and Losco, P., J. Org. Chem., 1989, vol. 54, p. 681.
5. Gedye, R.N., Arora, P., and Khalil, A.H., Can. J. Chem., 1975, vol. 53, p. 1943.