1. R. P. Shishkina, L. V. Éktova, K. I. Matoshina, and E. P. Fokin, Izv. Sib. Otd., Akad. Nauk SSSR, Otd. Khim. Nauk.,5, No. 12, 136 (1982).
2. N. P. Gritsan, N. M. Bazhin, V. G. Golovacheva, V. I. Eroshkin, and E. P. Fokin, USSR Inventor's Certificate No. 679,925; Byull. Izobr., No. 30, 171 (1979).
3. R. P. Shishkina, V. I. Mamatyuk, and E. P. Fokin, Izv. Akad. Nauk SSSR, Ser. Khim., 855 (1985).
4. J. M. Lyons and R. H. Thomson, J. Chem. Soc., 2910 (1953).
5. T. Kasai and R. Kurabayashi, Synth. Org. Chem. Jpn.,28, 736 (1970); Chem. Abstr.,73, 98 667c (1970).