in tetrahydrofuran addn. of chlorosuccinimide to Ge-compound soln., stirring at room temp. for 16 h (inert atmosphere); evpan., extn. (ether-pentane 4:1), concn., standing at -30°C for 12 h, pptn., drying (vac.); elem. anal.;

in benzene 20°C;;

in neat (no solvent) byproducts: ClCH2COOCH2CH3; diazoacetate adding to germane and heating for 12 h at 60°C; identified by NMR spectrum;