SYNTHESIS AND SPECTRAL EXAMINATION OF THE POSITION OF TAUTOMERIC EQUILIBRIUM IN 2-THIOXO-4-QUINAZOLONE

Article abstract of DOI:10.1007/BF00478134

2-Thioxo-4-quinazolone and its derivatives mono- and dimethylated at ring atoms N₍₁₎ and N₍₃₎ and the exocyclic sulfur have been synthesized.Using model compounds, UV spectroscopy has been used to show that 2-thioxo-4-quinazolone exists in the thioketo-form, no appreciable amounts of the thiol or enol isomers being present.