Substituted benzopentathiepins, their preparation from 1,2,3-benzothiadiazoles and elemental sulfur, selected 1,2,3-benzothiadiazoles; the benzopentathiepins being useful as biologically active compounds or as intermediates to 1,2-benzenedithiols.
Benzopentathiepins were synthesized by new reaction of 1,3-benzodithiole-2-thiones and 1,2-benzenedithiols with elemental sulfur/liquid ammonia at ambient temperature in high yields.