in water dropwise addn. of (15)NH4OH-soln. to ice-cooled acid soln.; evapn. (hot plate), drying (423 K);
参考文献
Krawietz, Thomas R.; Lin, Ping; Lotterhos, Karen E.; Torres, Paul D.; Barich, Dewey H.; Clearfield, Abraham; Haw, James F.
Journal of the American Chemical Society, 1998 , vol. 120, # 33 p. 8502 - 8511