in dimethyl sulfoxide thermolysis of mixt. of boron compound, DMSO and water at 493 K, 5 d, cooling; filtration, evapn. in vac., washing with ethyl acetate, drying;
参考文献
Fronczek, Frank R.; St Luce, Nadia N.; Strongin, Robert M.
Acta Crystallographica Section C: Crystal Structure Communications, 2001 , vol. 57, # 12 p. 1423 - 1425