Electrosynthesis of 2-benzhydrylidene-4,4-diphenyl-[1,3]oxathiolan-5-one: The reaction pathway

Article abstract of DOI:10.1016/0040-4020(95)00956-6

The pathway for the electrochemical formation of 2-benzhydrylidene-4,4-diphenyl-[1,3]oxathiolan-5-one (2), in dichloromethane tetraethylammonium bromide on graphite cathode is proposed. It involves reaction between electrogenerated diphenylketene (3), 2-bromo-2,2-diphenylacetyl bromide (1) and sulfide anion. The latter is formed from H₂S generated in the anodic compartment and electrogenerated bases.