HCl in diethyl ether soln. of HCl in OEt2 was added during 20 min to a stirred soln. of dialkyl at 20°C, mixt. was stirred for further 40 min at 20°C; volatiles were removed in vac., products were detd. by 1H NMR, Ge-compd. was obtained after fractional recrystn. from benzene-hexane;