Synthesis of a stable disulfur monoxide precursor and trapping of disulfur monoxide with transition-metal complexes

Article abstract of DOI:10.1021/om00094a037

A five-step synthesis of 4,5-diphenyl-3,6-dihydro-1,2-dithiin 1-oxide starting from 2,3-diphenylmaleic anhydride is described. When the dithiin 1-oxide was treated with coordinatively unsaturated transition-metal complexes, a transition-metal disulfur monoxide complex and 2,3-diphenylbutadiene were isolated.