diphenyl diselenide; water; bis-[(trifluoroacetoxy)iodo]benzene in tetrahydrofuran T=40°C; 14 h;

iodine; dimethyl sulfoxide T=150°C; 27 h;

1: With Grubb's 2nd generation catalyst in toluene T=80°C; 1.5 h; Inert atmosphere; 2: With Grubb's 2nd generation catalyst; tert.-butylhydroperoxide; tetra-(n-butyl)ammonium iodide in water; toluene; acetonitrile T=20°C; 1 h; Ionic liquid;

anhydrous lithium nitrate in water; acetonitrile Electrochemical reaction;

Multistep reaction;