1: With sodium hydrogen sulphate; sodium nitrite in water T=20°C; 0.166667 h; Paste grinding; 2: With potassium iodide in water T=20°C; 0.333333 h; Paste grinding;
Chemistry of Heterocyclic Compounds (New York, NY, United States), , vol. 21, # 3 p. 322 - 325
Khimiya Geterotsiklicheskikh Soedinenii, , vol. 21, # 3 p. 386 - 389