Zorin, V. V.; Nikolaeva, S. V.; Zlot-skii, S. S.; Rakhmankulov, D. L. Journal of Organic Chemistry USSR (English Translation), 1985 , vol. 21, # 3 p. 599 Zhurnal Organicheskoi Khimii, 1985 , vol. 21, # 3 p. 660 - 661