Synthesis of annelated 1,3,4,6-thiatriazepines from dichlorodiazabutadienes and cyclic thioureas
Abstract
Treatment of 1,4-dichlorodiphenyl-2,3-diazabutadiene (2) with the sodium salts of cyclic thioureas has yielded the first examples of a new type of seven-membered heterocycle, annelated 1,3,4,6-thiatriazepines.