1, 2-Dithiins (1, 2-dithiacyclohexadienes) are six-membered heterocycles characterized by a disulfide linkage in the place of two contiguous CH groups of benzene. Photosensitive and deeply colored, 1, 2-dithiins have long been the subject of intense theoretical interest primarily due to their 8n electron antiar~ maticl-~ ring system. Naturally occurring 1, 2- dithiins (thiarubrines) were first identified in the mid-1960~~ 3~ in plants of the family ...
