A cascade, fifteen or so step, one-pot reaction yielding one freak heterocycle as the main product, with more sulfurs in it than … I dunno what.
Angew. Chem. Int. Ed. 1997, 36, 281-283. (DOI: 10.1002/anie.199702811)
Listen to this. Hünig’s base acts as a reactant and electrophilic sulfurs play the main characters. I love it. This is the crème de la crème of heterocyclic chemistry.
I can’t resist the temptation to once again mock retrosynthetic analysis. How many of you (yeah, you too, Corey), upon beeing presented with structure 1, would stand up and say
‘Hm… maybe if I treated Hünigs base with sulfur dichloride in the presence of DABCO…’?