参考文献
Kochergin, P. M.; Persanova, L. V.; Aleksandrova, E. V.; Gutorov, L. A.; Korsunskii, V. S.
Chemistry of Heterocyclic Compounds (New York, NY, United States), 1995 , vol. 31, # 3 p. 337 - 339
Khimiya Geterotsiklicheskikh Soedinenii, 1995 , # 3 p. 388 - 390
