参考文献
Korostovka, S. E.; Mikhaleva, A. I.; Trofimov, B. A.; Shevchenko, S. G.; Sigalov, M. V.
Chemistry of Heterocyclic Compounds (New York, NY, United States), 1992 , vol. 28, # 4 p. 406 - 408
Khimiya Geterotsiklicheskikh Soedinenii, 1992 , # 4 p. 485 - 488
