Advances in Cu and Ni-catalyzed Chan–Lam-type coupling: synthesis of diarylchalcogenides, Ar2–X (X = S, Se, Te)

X, X = S, Se, Te) by Chan-Lam-type coupling using Cu or Ni catalysis and comprises diverse approaches based on different sources of arylsulfur donors like thiols, diaryldisulfides, molecular sulfur, diheteroaryldisulfides and similar sources of Se and Te.