n-butyllithium in tetrahydrofuran triphenyl(tributylstannyl)german reacted with BuLi in THF at -50°C to form triphenylgermyl-Li; the spiro-compd. was added at 0°C, warmed (room temp)., stirred for 3 h, and hydrolyzed (H2O); reactions under N2 in dry, N2-satd. solvent;; evapn., chromy. of the residue on SiO2, eluent CCl4/benzine (2:1), sepn. of tetrabutylstannan as the first fraction; product could not be obtained in pure form because of partial decompn.;;

n-butyllithium in tetrahydrofuran triphenyl(tributylstannyl)german reacted with BuLi in THF at -50°C to form triphenylgermyl-Li; the spiro-compd. was added at 0°C, warmed (room temp)., stirred for 1 h, and FeCl2-suspn. in THF added; refluxed for 2 h; hydrolyzed(H2O);; filtration through Na2SO4 and rinsing with CCl4; after evapn., chromy. of the residue on SiO2, eluent CCl4, sepn. of tetrabutylstannan as the first fraction; elem. anal.;;