Novel sulfurated five-, seven- and nine-membered heterocycles: unusual products derived from potential bisthionitroxide precursors

Abstract

We report the synthesis of three examples of new classes of sulfurated heterocycles: dithiadiazaphospholidine 3, benzothiadiazacycloheptene 6a and benzotrithiadiazacyclononene 6b arising from strained cyclic N,N-disubstituted diazadisulfides (2 and 5)via oxidation or disproportionation; single-crystal X-ray structural analyses are reported for the phospholidine and the benzocycloheptene.