sodium cyanide in ammonia N2-atmosphere; molar ratio borane:NaCN=1:1, stirring in excess NH3 at -44°C for 4 h; solvent removal (vac.), treatment with C6H6 for 20 min, filtration, evapn. of filtrate, sublimation (vac., 50°C);
参考文献
Bratt, P. J.; Brown, M. P.; Seddon, K. R.
Journal of the Chemical Society, Dalton Transactions: Inorganic Chemistry (1972-1999), 1976 , p. 353 - 356