Disulfides are versatile building blocks for the synthesis of various organo-sulfur compounds, 1 and they also play important roles in biological and chemical processes. 2 Various methods have been reported in the literature 3 for the synthesis of disulfides from thiols 3. and 4. which make use of various oxidizing agents. Oxidizing agents ranging from molecular oxygen 5., and to halogens and derivatives, 6., , , , and metal oxides 7., , and and oxo-peroxo ...