参考文献
Terenin, V. I.; Kabanova, E. V.; Feoktistova, E. S.; Ovcharenko, V. V.; Bundel', Yu. G.
Chemistry of Heterocyclic Compounds (New York, NY, United States), 1992 , vol. 28, # 11 p. 1268 - 1273
Khimiya Geterotsiklicheskikh Soedinenii, 1992 , # 11 p. 1485 - 1490