in tetrachloromethane under N2 at 0°C; not isolated, detected by NMR;

in neat (no solvent) 2,2-bis(trimethylstannyl)propane placed in flash with 2 mol of dimethyldichlorostannane, heated at 60°C overnight; stirred at 15-20 Torr, warmed at 0.01 Torr to 100°C, recrystd. (CCl4); elem. anal.;

Na in ammonia; pentane NH3 (liquid); Na reacted with trimethylchlorostannane in pentane/liq. NH3 under N2, 2,2-dichloropropane added slowly with stirring, NH3 allowed to boil off; extd. with pentane and H2O, pentane layer washed with H2O, evapd. (vac.), treated with H2O2/acetone, stirred, treated with pentane, washed withH2O, pentane layer dried (MgSO4), filtered, concd., distd. (0.01 Torr) at room temp.; elem. anal.;

in neat (no solvent) 2,2-bis(trimethylstannyl)propane placed in flash with 2 mol of dimethyldichlorostannane, heated at 60°C overnight; stirred at 15-20 Torr, warmed at 0.01 Torr to 100°C, recrystd. (CCl4); elem. anal.;