sulfuric acid; sodium perchlorate in chloroform
Heatingor KClO4;
参考文献
Kotlyar, S. A.; Klimova, E. I.
Chemistry of Heterocyclic Compounds (New York, NY, United States), 1990 , vol. 26, # 11 p. 1313 - 1314
Khimiya Geterotsiklicheskikh Soedinenii, 1990 , # 11 p. 1572 - 1573