HCl in toluene sepn. of dimethylamine hydrochloride and toluene, distn.;

in neat (no solvent) byproducts: Me3SiCl; under N2, equimolar amt. of Me3SiNMe2 was added slowly to stirred (Me3Si)2NBCl2 at 0°C, warmed to room temp., stirred overnight; Me3SiCl removed under vac., distd.; elem. anal.;

in benzene stirring for 1 week in dry benzene; sepn. of trimethylamine hydrochloride and benzene;

(i) nBuLi, (ii) /BRN= 1733155/; Multistep reaction;

in diethyl ether under N2, equimolar amt. of MeLi was added dropwise to stirred soln. of(Me3Si)2NB(NMe2)Cl in Et2O at 0°C, warmed to room temp., stirredovernight; filtered, freed of solvent, hexane added, filtered, solvent removed, distd.; elem. anal.;

T=600°C;