This Perspective article highlights the recent development of mesoionic N-heterocyclic olefins (mNHOs), where the exo-cyclic olefinic carbon is not bonded to strongly electron-withdrawing groups. The unquenched basicity and nucleophilicity of the exo-cyclic olefinic carbon make mNHOs strong σ-donors and enable unique reactivity patterns.
Qiuming Liang, Datong Song. Recent advances of mesoionic N-heterocyclic olefins. Dalton transactions (Cambridge, England : 2003). 2022 Jun 21;51(24):9191-9198
PMID: 35642920
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