in diethylene glycol under N2 or in vac., 10-30 fold excess of Me3GeH, stirred and warmed to 0°C (0.3-2 h) and 25°C (0.5-17 h);

in diethylene glycol under N2 or in vac., 10-30 fold excess of Me2GeH2, stirred and warmed to 0°C (0.3-2 h) and 25°C (0.5-17 h);

hydrogenchloride in hydrogenchloride under N2 or in vac., excess HCl at 25°C;

hydrogen bromide in diethylene glycol byproducts: CH3Br; under N2 or in vac., excess HBr condensed onto soln. of Ge-compd. in diglyme, warmed to 25°C; sepn. by fractional condensation;