Formation of kinetically stabilized dithiiranes by treating thione S-oxides bearing a bulky substituent with Lawesson's reagent

Article abstract of DOI:10.1246/cl.1999.695

Treatment of sterically crowded thione S-oxides derived from d-camphor with Lawesson's reagent afforded dithiiranes along with deoxygenation of the starting materials, and the mixtures were subjected to mCPBA oxidation to give the corresponding dithiirane S-oxides and thione S-oxides.