(2,2,6,6-tetramethylpiperidino)CdLi in pentane 1 equiv. of (TMP)3CdLi added, refluxed for 3 h, I2 added;

1: With n-butyllithium; N,N,N',N,-tetramethylethylenediamine in hexane T=20°C; Inert atmosphere; 2: With iodine in tetrahydrofuran; dichloromethane T=-78 - 20°C; 2.5 h; Inert atmosphere;

potassium fluoride; iodine in dichloromethane byproducts: Sn(C4H9)3F; under N2, addn. of I2 to a cooled (-70°C) BSSF soln., mixt. allowed to warm to room temp., stirred overnight; yield >80percent with pure BSSF; purifn. if use of crude BSSF: washed (aq. Na2S2O3), organic layer flashed through Al2O3, removal of solvent, oil dissolved in MeOH, addn. of KF, filtration, filtrate dried in vac., extn. (Et2O), flashed through Al2O3;

in dichloromethane byproducts: Sn(C4H9)3Cl; under N2, addn. of ICl to a cooled (-70°C) BSSF soln., mixt. allowed to warm to room temp., stirred overnight;

in dichloromethane byproducts: Sn(C6H5)3Cl; under N2, addn. of ICl to a cooled (-70°C) stannylferrocene soln., mixt. allowed to warm to room temp., stirred overnight; removal of solvent, extn. (Et2O), yellow soln. passed through an Al2O3 plug;

in dichloromethane stirred for 12 h at -79°C;

0.25 h; Inert atmosphere;