Ring-opening desulfurization of 1,2,3-thiadiazolium salts with N-nucleophiles
Abstract
The 1,2,3-thiadiazolium chlorides 4a, b react with benzylamine, aniline, phenylhydrazine, hydroxylamine and N-methylhydroxylamine at low temperature to yield the 1-arylamino-1,4-diazadienes 5–9 which have been fully characterized by NMR spectroscopy.