1: With phosphoric acid in 1,4-dioxane; water
T=80°C; pH=2; 0.5 h;
2: With ammonium chloride in 1,4-dioxane; water
T=100°C; 3 h; Further stages.;
参考文献
Perry, Marc C.; Cui, Xiuhua; Powell, Mark T.; Hou, Duen-Ren; Reibenspies, Joseph H.; Burgess, Kevin
Journal of the American Chemical Society, 2003 , vol. 125, # 1 p. 113 - 123