A new approach for the ortho-substitution of anilines and for the synthesis of indolines

Article abstract of DOI:10.1016/j.tetlet.2004.04.111

Intermolecular radical addition of a xanthate to a vinyl sulfanilide is followed by ring closure to the aromatic ring to give a dihydrobenzoisothiazole dioxide structure, which upon heating loses sulfur dioxide to give a 2-substituted aniline; in some exa