zinc in tetrahydrofuran; water under air atm., at room temp., cosolvent media: H2O(NH4Cl)/THF/Zn, alkyliodide was added dropwise to the alkyl tin halide in solvent mixt. over 15 min, reaction time 0.5 h; Zn was filtered off, aq. phase was extd. three times with n-pentane, organic phase was washed with sat. aq. NaCl and dried over MgSO4, solvent was removed, crude oil was distilled under vac.; (119Sn NMR monitoring);

diethyl ether; copper

methyl-magnesium iodide in diethyl ether refluxing, 12h;;

methyl-magnesium iodide in diethyl ether refluxing, 12h;;

in not given Kinetics; at 25,30,35,40°C;;

in not given Kinetics; at 25,30,35,40°C;;

bromine in tetrachloromethane Kinetics; at 35.3°C;;

iodine in methanol Kinetics; at 35.3°C;;