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