参考文献
Kuznetsov, V. V.; Gaivoronskaya, L. A.; Fomichev, A. A.; Romero, R. M.; Prostakov, N. S.
Chemistry of Heterocyclic Compounds (New York, NY, United States), 1987 , vol. 23, # 7 p. 779 - 782
Khimiya Geterotsiklicheskikh Soedinenii, 1987 , # 7 p. 949 - 953