tert.-butyl lithium; methyl iodide in tetrahydrofuran; pentane byproducts: BuH, LiI; under N2 or Ar, addn. of t-BuLi in pentane to a soln. of the germyl compd. in THF at -40°C, stirring, 40 min, -40°C, formation of the dilithium, addn. of an excess of MeI at -40°C, ambient temp., 30 min at 20°C, hydrolysis; extn., concg. under vac., recrystn. (pentane), detn. by 13C and 1H NMR;

Bu2Hg in benzene byproducts: mercury; 36 h at room temperature, Hg precipitated; not isolated, detected by NMR spectra;

in tetrahydrofuran; N,N,N',N',N'',N''-hexamethylphosphoric triamide (Ar); soln. of SmI2 (2 equiv.) in THF was added to soln. of MePh2GeBr inhexamethylphosphoric triamide; mixt. was stirred at room temp. for 1 h; chromd. (silica gel, ether); evapd.; chromd. (silica gel, hexane);

in ethylene glycol dimethyl ether Electrolysis; (N2); potential controlled electrolysis at -1,5 V (vs. AgI/Ag referenceelectrode) of soln. of Ge compd. at room temp.; filtered soln. was evapd. in vac., residue was extd. with ether and solvent removed, residue was sepd. by TLC, products were identified by m. p., IR, NMR and MAS;

methylmagnesium bromide in tetrahydrofuran

in tetrahydrofuran byproducts: LiCl; under inert atm., refluxed for 2 h; hydrolysis, extn. (ether), dried over Na2SO4, concd. in vac., taken up in pentane, decanted, dried;

water; tert.-butyl lithium; methyl iodide in tetrahydrofuran; pentane byproducts: BuH, LiI; under N2 or Ar, addn. of t-BuLi in pentane to a soln. of the digermyl compd. in THF at -40°C, stirring for 30 min, -40°C, addn. of an excess of MeI, warming to ambient temp., 30 min at 20°C, hydrolysis; extn., concg. under vac., 1H NMR, not isolated;

in tetrahydrofuran byproducts: (CHCl2)2, CH2Cl2; Irradiation (UV/VIS); (Ar); UV irradn. of a soln. of boron compd. and chloroform in THF at room temp. for 30 min; GLC and GC-MS detection;

in cyclohexane Irradiation (UV/VIS); dissolution of digermane in dry cyclohexane in a quartz tube, degassing in a vacuum, charging with argon, irradiation with a 110 W low pressure Hg arc lamp at room temp. for 2 h; verrifying the photoproducts by GLC and GC-MS;

in cyclohexane Irradiation (UV/VIS); dissolution of digermane in dry cyclohexane in a quartz tube, degassing in a vacuum, charging with argon, irradiation with a 110 W low pressure Hg arc lamp at room temp. for 2 h; verrifying the photoproducts by GLC and GC-MS;