参考文献
Grishina, G. V.; Leshcheva, I. F.; Sergeev, N. M.; Potapov, V. M.; Vovk, A. I.
Chemistry of Heterocyclic Compounds (New York, NY, United States), 1982 , vol. 18, # 6 p. 589 - 593
Khimiya Geterotsiklicheskikh Soedinenii, 1982 , vol. 18, # 6 p. 780 - 784