dimethylsulfide; copper(I) bromide 1.) Et2O, from -35 deg C to -40 deg C, 0.5 h, 2.) Et2O, -78 deg C, 1.0 h; Yield given. Multistep reaction;

copper(l) iodide; n-butyllithium; thiophenol 1.) THF. 0 deg, 10 min, 2.) 0 deg C, 15 min, 3.) -78 deg C, 1 h, 4.) THF, -60 deg C, 40 min, RT.;