参考文献
Svyatkina, L. I.; Abramova, N. D.; Dmitrieva, L. L.; Trzhtsinskaya, B. V.; Skvortsova, G. G.
Chemistry of Heterocyclic Compounds (New York, NY, United States), 1982 , vol. 18, # 11 p. 1190 - 1193
Khimiya Geterotsiklicheskikh Soedinenii, 1982 , vol. 18, # 11 p. 1532 - 1535