Résumé/Abstract Synthesis of 5-and 6-membered heterocycles by a strategy combining SN Ar and S RN 1 reactions. The S RN 1 mechanism is compatible with many substituents on the benzenic substrate and allows S RN 1 reactions to be combined with SN Ar reactions in a strategy which brings together their corresponding synthetic advantages. Thus, compounds containing benzene fused to 5-or 6-membered heterocycles containing N ( ...