One-pot synthesis of aryl alkyl thioethers and diaryl disulfides using carbon disulfide as a sulfur surrogate in the presence of diethylamine catalyzed by copper(I) iodide in polyethylene glycol (PEG200)

Z = I, OTs, Br, Ar = phenyl, 4-methylphenyl, 4-methoxyphenyl, naphthalen-1-yl, 4-trifluoromethylphenyl, 3,4-dichlorophenyl, R = benzyl, n-butyl, cyclohexyl.