Electrosynthesis of Heterocyclic Compounds and Other Alternative Electrosynthetic Processes
The cathodic reduction of 2-bromo-2,2-diphenylacetyl bromide (1) in dichloromethane and tetraethylammonium bromide on graphite cathode under argon atmosphere in a divided cell and with a layer of solid sodium thiosulphate on the diaphragm in the anodic side (to prevent the diffusion into the cathodic compartment of the bromine formed in the anodic process) led to an unexpected and surprising heterocyclic compound which, after work up of the catholyte, was isolated and identified as 2-benzhydrylidene-4,4-diphenyl-[1,3]oxathiolan-5-one (2).
KeywordsHydrogen Sulfide Intramolecular Cyclization Anodic Side Cathodic Reduction Cathodic Compartment
Unable to display preview. Download preview PDF.