Fused 1,2-dithioles. IV. Synthesis and reactions of 1,2-dithiole<i>s</i>-oxides
作者:Josef Emmeram Schachtner、Thomas Zoukas、Hans-Dietrich Stachel、Kurt Polborn、Heinrich Nöth
DOI:10.1002/jhet.5570360125
日期:1999.1
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
1,2- Dithiolopyrrolones和它们的类型的heterologues 1是共振稳定系统显示高偶极矩。在与有机过酸氧化化合物2,5,15A,16A,20A和25A,得到相应的小号(2)和-oxides,这取决于取代基,在某些情况下,小号(2) -和小号(1)-dioxides。该小号(2)-monoxides呈倾向歧化和很容易降低到与symme Trical公司二甲dithioles。从S(2)-氧化物和几种伯胺获得双环异噻唑-S-氧化物(S / N-交换反应)。从Ñ -未被取代的异噻唑小号氧化物10e中的Ñ -hydroxyisothiazole 9D是由一个氮杂Pummerer重型重排合成。假定S(2)-氧化物作为吡咯烷酮和1型类似物的活性代谢物在其作为抗菌剂和抗分枝杆菌的作用中可能具有重要的生物学意义。