N-bromosuccinmide in sulfuric acid T=20°C; different reaction temperature; Product distribution;
参考文献
Chemistry of Heterocyclic Compounds (New York, NY, United States), , vol. 24, # 8 p. 892 - 897
Khimiya Geterotsiklicheskikh Soedinenii, , # 8 p. 1084 - 1090