Facile synthesis of 1, 2-benzisothiazole-3-one-1,1 -dioxide methylsulfonyl derivatives
作者:Liang Xu、Mark L. Trudell
DOI:10.1002/jhet.5570410322
日期:2004.5
An improved and general synthesis of saccharin methylthio and methylsulfone derivatives from chlorosubstituted saccharins is presented. A large-scale procedure for preparation of chloro-substituted saccharins was developed. Treatment of the saccharin chlorides with sodium thiomethoxide and t-BuOK in DMF gave the saccharin methyl sulfides, which upon chromium(VI) oxide catalyzed oxidation with periodic
提出了从氯取代的糖精的糖精甲硫基和甲基砜衍生物的改进和一般的合成。开发了用于制备氯取代的糖精的大规模方法。在二甲基甲酰胺中用硫代甲醇钠和t -BuOK处理糖精氯化物,得到糖精甲基硫化物,其在氧化铬(VI)催化下用高碘酸氧化得到高收率的相应糖精甲基砜。