ammonium sulfate; sulfuric acid in water 1.) -2 - 0 deg C, 2h; 2.) 25 - 30 deg C, 24h;
参考文献
Rao, C. Someswara; Ramachandra, R.; Kshirsagar, S.; Vashi, D. M.; Murty, V. S. N.
Indian Journal of Chemistry, Section B: Organic Chemistry Including Medicinal Chemistry, 1983 , vol. 22, # 3 p. 230 - 233
Fisnerova,L. et al.
Collection of Czechoslovak Chemical Communications, 1967 , vol. 32, p. 4082 - 4098
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Roser
Justus Liebigs Annalen der Chemie, 1888 , vol. 247, p. 173