in toluene byproducts: Me2SnCl2; (Ar); using Schlenk techniques; vac. transferring of toluene into flask with C12H8SnMe2 at -78°C; addn. dropwise via syringe of soln. of C6H5BCl2 at -78°C, slowly warming to room temp., stirring overnight; removal of solvent under vac., transferring to a sublimator, removal of Me2SnCl2 under static vac. at 40°C for 2 days, elem. anal.;

1: n-C4H9Li / diethyl ether 2: toluene View Scheme

(i) Li, Et2O, (ii) /BRN= 2937158/, (iii) (heating); Multistep reaction;