A Novel Synthetic Route to Imidazole Derivatives: Synthesis of Mesoionic 3-Alkyl-2-arylthio-1,3-diazolium-4-olates

Article abstract of DOI:10.1055/s-1989-27347

The reaction between N-alkylisocyanoacetamides 3a-e and arylsulfenyl chlorides 4a, c, f-i affords arylcarbonimidochloridothioates 5a-i which on treatment with triethylamine undergo ring-closure to give 3-alkyl-2-arylthio-1,3-diazolium-4-olates 8a-i.