参考文献
Gurovets, A. S.; Sharf, V. Z.; Taits, S. Z.; Vol'kenshtein, Yu. B.; Fabrichnyi, B. P.
Chemistry of Heterocyclic Compounds (New York, NY, United States), 1984 , vol. 20, # 12 p. 1331 - 1336
Khimiya Geterotsiklicheskikh Soedinenii, 1984 , # 12 p. 1616 - 1621
