CH3MgBr in diethyl ether; benzene byproducts: tetraphenylnaphthalene; Norbornadiene-compound and Me2GeBr2 are heated at 75°C for 4 h in benzene, reaction mixture is methylated with MeMgBr in Et2O at 0°C with stirring for 0.5 h then stirring for 1 h at room temp. (Ar).; addn. of H2O and NH4Cl at 0°C, sepn., extn. of aq. phase (Et2O), removal of solvent, GC-MS anal. demonstrates the formation of Me8Ge3 and Me10Ge4 as the methylation products in ratio 1:1;

lithium in tetrahydrofuran distg. THF under N2 from Na-wire into three-necked flask (with reflux condenser, dropping funnel and mechanical stirrer); introduction of Li-dispersion (0.83 mol); addn. of mixt. of (CH3)3GeCl (0.38 mol) and (CH3)2GeCl2 (0.23 mol) with stirring (1 h);; addn. of methanol after stirring for 10 h; extg. with ether and drying combined org. layer over anhydrous sodium sulfate; evapg. to dryness, distn.; elem. anal.;;

CH3MgBr in diethyl ether Methylation of reaction mixture with MeMgBr in Et2O at 0°C with stirring for 0.5 h, then stirring of the mixture at room temp. for 1 h under Ar.; addn. of H2O and NH4Cl, sepn. of phases, extn. of aq. phase (Et2O), removal of solvent, pptn. of tetraphenylnaphthalene (pentane), investigation of crude products by GC-MS anal.;

in cyclohexane Irradiation (UV/VIS); photolysis (185 nm); 30percent conversion; 18percent Me3GeH, 5percent Me4Ge, 29percent (Me3Ge)2, 1percent (Me3GeMe2Ge)2, and 1percent Me3GeGeMe2H obtained;

9,10-anthracenedicarbonitrile in tetrachloromethane; acetonitrile byproducts: (CCl3)2; Irradiation (UV/VIS); in MeCN:CCl4=10:0.43 v/v; high-pressure Hg-lamp (450 W), 1 h, 0°C; product mixt. not sepd., detd. by gas chromy., NMR and mass spectroscopyand emission quenching of excited state of DCA; product ratio mono:di:t ri=48.8:56.2:52.5, total conversion 75.0percent;