Zhurnal Obshchei Khimii, , vol. 3, p. 769,776 Archiv der Pharmazie (Weinheim, Germany), , vol. 271, p. 359,364 Chem. Zentralbl., , vol. 105, # II p. 2227 Zhurnal Prikladnoi Khimii (Sankt-Peterburg, Russian Federation), , vol. 9, p. 304,314 Chem. Zentralbl., , vol. 107, # II p. 1543 Journal of Organic Chemistry, , vol. 12, p. 435 Journal of Organic Chemistry, , vol. 13, p. 937