intramolecular free radical [1,5] ipso substition using sulfonamide and sulfonate tethering chains, since the introduction of either electron releasing or electron withdrawing groups ortho to the sulfonyl substituted acceptor ring facilitates the overall reaction.
受阻的联芳基和杂联芳基甚至更容易通过使用磺酰胺和
磺酸酯束缚链的分子内自由基[1,5] ipso取代来制备,因为在磺酰基取代的受体环上引入了电子释放基团或吸电子基团可以促进整个反应。