Synthesis of Monocyclic Hydroperoxy- and Hydroxy-Substituted Sulfin- and Sulfonamides by Oxidation of 4,5-Dimethylisothiazolium Salts
作者:Kathleen Taubert、Joachim Sieler、Lothar Hennig、Matthias Findeisen、Bärbel Schulze
DOI:10.1002/1522-2675(200201)85:1<183::aid-hlca183>3.0.co;2-5
日期:2002.1
The isothiazolium salts 10, easily accessible by cyclocondensation of the thiocyanates 8 with the anilines 9, yielded with H,02 as the oxidant the first stable hydroperoxides of the 2-aryl-2,3-dihydroisothiazole 1-oxides rac-cis-13, the 1,1-dioxides 15, and their reduced 3-hydroxy derivatives rac-cis-14 and 16, respectively. The oxidation of 10 to new isothiazol-3(2H)-one 1,1-dioxides (17) is also described. For the first time, an aryl-bridged bis[isothiazolium salt] 11 was synthesized and oxidized.