in not given

C2H5MgBr in diethyl ether Ethylation of reaction mixture with EtMgBr 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 benzene Ar or N2-atmosphere, 20°C;

in benzene Norbornadiene-compound and PhCH2Br are heated at 80°C for 4 h in benzene under Ar.; GC-MS anal.;

methylphosphonous dibromide in neat (no solvent) not isolated, equilibrium concns. with educts detd. by (1)H-NMR spectroscopy; equilibrium ratio of products depending on ratio of educts;

methylphosphonothioic dibromide in neat (no solvent) room temp., 1 day; not isolated, equilibrium concns. with educts detd. by (1)H-NMR spectroscopy; equilibrium ratio of products depending on ratio of educts;

in tetrachloromethane; water Kinetics; an aliquot of aq. soln. containing varius concens. of hydrohalogenic acid and germanium compd. is shaken with an aliquot of CCl4 for 30 min in a centrifuge tube at 25°C; after phase sepn., the germanium concen. in both the phases is determined with an inductivity coupled argon plasma emission spectrometer;

in not given

in chlorobenzene Kinetics; byproducts: C6H5CH2CH2C6H5; 7-germanarbornadiene heating with an excess of PhCH2Br in PhCl at 85°C; isolated as PhCH2GeMe3 after methylation of reaction mixt.; detected by(1)H CIDNP spectrum; permethylated deriv. identified by GC-MS anal.;

copper under dried abs. N2; fine powdered Ge and Cu-Powder divided among glass wool in a quartz tube; addn. of CH2Br2 (1 drop/s) during heating in a oven until 310°C; reaction finished after 4 h; summarizing in cooling trap at -78°C; removing of excess CH2Br2 at 25°C and 1 atm; fractioned distn. under vac.; crystn. of (CH2GeBr2)2; elem. anal.; NMR; IR; mass spectroscopy;