type 1 are resonance stabilized systems displaying a high dipole moment. Upon oxidation with organic peracids compounds 2, 5, 15a, 16a, 20a and 25a gave the corresponding S(2)-oxides and, depending on substituents, in some cases the S(2)- and S(1)-dioxides. The S(2)-monoxides showed a proclivity to disproportionation and were easily reduced to dithioles with symme trical dimethylhydrazine. From S(2)-oxides