参考文献:
Bystrykh, N. N. Buzykin, B. I. Stolyarov, A. P. Flegontov, S. A. Kitaev, Yu. P. Chemistry of Heterocyclic Compounds (New York, NY, United States), 98 , vol. 9, # 6 p. 666 - 67 Khimiya Geterotsiklicheskikh Soedinenii, 98 , vol. 9, # 6 p. 826 - 8