potassium hexamethylsilazane in tetrahydrofuran T=20°C; 2 h;

in tetrahydrofuran byproducts: Hg, H2; molar ratio Hg:B=1:2, refluxing (3 h); sepn. of Hg;

50 to 150°C;

in tetrahydrofuran Kinetics; byproducts: H2; react. in THF at 20°C; not isolated; detected by NMR and IR;

in water

in methanol; hexane; dichloromethane; ethyl acetate; acetone

boron trifluoride diethyl etherate in tetrahydrofuran; ammonium hydroxide; dichloromethane addn. of BF3*OEt2 to a stirred soln. of the 1,1'-diacylferrocene in THF at 25°C, addn. of NaBH3CN over 10 min, stirring (1 h), diln. withCH2Cl2, addn. of aq. NH3 to pH 10; layer sepn., drying (Na2SO4), concn., flash chromy. (SiO2; hexanes/Et2O);

hydrogenchloride in further solvent(s) byproducts: NaCl, H2; (N2); HCl soln. in Me2S was added dropwise at 0°C to suspn. of NaBH2CN in Me2S, when H2 evolution had ceased formed NaCl was filtered off; filtrate was evapd. at room temp. and residue was kept under reduced pressure (0.01 mbar) for 1 h, crystn. was completed within a few h; elem. anal.;

1,4-dioxane; hydrogenchloride in tetrahydrofuran byproducts: NaCl, H2; (N2); HCl in THF was added dropwise to vigorous stirred soln. of NaBH2CN until H2 evolution was no longer observed; soln. was evapd. in vac., residue taken up in dioxane, filtered and washed with dioxane, then dried in N2 stream; purifn. by extn. into ether; elem. anal.; mother liquor of dioxane extn. yielded BH2CN polymer (IR, (1)H-NMR;

in acetonitrile byproducts: H2; 12 h, 0°C; liquid decanted off;