Synthesis of 6aλ4-thia-1,2,3,5,6-pentaazapentalenes
Abstract
The title compounds have been obtained from 5-amino-1,2,3-thiadiazole 6 by methylation and reaction with arenediazonium tetrafluoroborates; their 13C NMR data and X-ray analysis are discussed in terms of two non-equivalent resonance contributors 11A and 11B.