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参考文献:
Agadzhanyan, Ts. E. Arutyunyan, A. D. Saakyan, G. S. Chemistry of Heterocyclic Compounds (New York, NY, United States), 1992 , vol. 28, # 8 p. 924 - 926 Khimiya Geterotsiklicheskikh Soedinenii, 1992 , # 8 p. 1098 - 1100