Uglova, E. V.; Makhaev, V. D.; Reutov, O. A. Journal of Organic Chemistry USSR (English Translation), 1982 , vol. 18, # 8 p. 1386 - 1389 Zhurnal Organicheskoi Khimii, 1982 , vol. 18, # 8 p. 1584 - 1588