Metal-free C(sp3)–H bond activation: first synthesis of diaryl-pyridinium-azaarene-butenolate zwitterionic salts on chalcones

Abstract

An efficient route for the synthesis of diaryl-pyridinium-azaarene-butenolate zwitterionic derivatives via metal-free, iodine-mediated C(sp3)–H bond activation of alkyl-azaarenes on addition to the α,β-unsaturated carbonyls has been reported.