参考文献
Bobrovskii, S. I.; Babaev, E. V.; Gromov, S. P.; Paseshnichenko, K. A.; Bundel', Yu. G.
Chemistry of Heterocyclic Compounds (New York, NY, United States), 1987 , vol. 23, # 2 p. 175 - 179
Khimiya Geterotsiklicheskikh Soedinenii, 1987 , vol. 23, # 2 p. 209 - 213