New reaction of thiocarbonyl ylides. Interaction of S-alkyl-N,N-dimethylthiobenzimidium salts with activated acetylene derivatives leading to (E,E)-divinyl sulfides

Article abstract of DOI:10.1007/BF02495208

The reaction of thiocarbonyl ylides with activated acetylene derivatives gives (E,E)-divinyl sulfides in good yields. The reaction mechanism is discussed and evidence in favor of the formation of a thiirane intermediate is presented.