A convenient route for the synthesis of new thiadiazoles

Abstract

The present work describes the preparation of new thiadiazoles through a simple intramolecular reactionof mono- and bis-hydrazonoyl halides with methyl hydrogen phenyl carbonimidodithioate or methyl-2-arylidene hy-drazinecarbodithioate. The synthetic method involves nucleophilic substitution followed by intramolecular cyclizationreactions mediated by evolution of methanethiol. The structures of the title compounds were elucidated by elementalanalyses, and FTIR, MS and NMR spectra.