Recent developments in experimental and computational chemistry have identified a rapidly growing class of nucleophilic aromatic substitutions that proceed by concerted (cSN Ar) rather than classical, two-step, SN Ar mechanisms. Whereas traditional SN Ar reactions require substantial activation of the aromatic ring by electron-withdrawing substituents, such activating groups are not mandatory in the concerted pathways.
Keywords: Meisenheimer complex; cSNAr mechanism; concerted reactions; nucleophilic aromatic substitution.
© 2019 The Authors. Published by Wiley-VCH Verlag GmbH & Co. KGaA.