hydrogenchloride in tetrahydrofuran; diethyl ether; benzene prepg. a bisaryldihalogermane (from GeCl4 in C6H6 and the Grignard reagent in THF), addn. of a soln. of this dihalogermane in Et2O to a stirred suspn. of LiAlH4 in Et2O under dry Ar (over 40 min), gently refluxing (11 h), slow addn. of 6 M HCl; extg. (Et2O), washing the org. layer (brine), drying (over MgSO4), filtration, removing solvent;

tert.-butyl lithium in tetrahydrofuran; pentane addn. of t-BuLi in pentane to a soln. of the silylgermane in anhyd. THF at -23°C under dry Ar, warming to 20°C, stirring (5.5 h) yielding a red-brown soln., addn. of methanol, immediate color change to pale yellow; aq. workup, chromy.; elem. anal.;