1: With orthophosphorus acid in acetic acid
0.5 h; Heating;
2: With ammonium hydroxide in acetic acid
Further stages.;
参考文献
Liu, Bo; Thalji, Reema K.; Adams, Paul D.; Fronczek, Frank R.; McLaughlin, Mark L.; Barkley, Mary D.
Journal of the American Chemical Society, 2002 , vol. 124, # 44 p. 13329 - 13338