Alkyl 2-Methyldithiocarbazates in Heterocyclic Synthesis: Preparation of 2-Alkylthio-1,3,4-thiadiazolium Cations and 2-Thioxo-2,3-dihydro-1,3,4-oxadiazole Derivatives

Article abstract of DOI:10.1055/s-1988-27672

Alkyl 3-acyl-2-methyldithiocarbazates 2, available from alkyl 2-methyldithiocarbazates and acyl chlorides, undergo ring closure by the action of perchloric acid/acetic anhydride to give 2-alkylthio 3-methyl-1,3,4-thiadiazolium salts 4.Compounds 2 also und