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Pyridinium‐derived mesoionic N‐heterocyclic olefins (py‑mNHOs)
sts, ligands, or nucleophiles. Herein, we report the synthesis and characterization of a series of 3-methylpyridinium-derived mesoionic olefins (py-mNHOs). We used a DFT-supported design concept, which [...] π-systems, a gradual transition from the formation of zwitterionic adducts via stepwise to concerted 1,3-dipolar cycloadditions was observed experimentally and analyzed by quantum-chemical calculations. en [...] en Angewandte Chemie. International edition; 63(10) https://creativecommons.org/licenses/by/4.0/ (3+2) Cycloaddition Mesoions N-Heterocyclic Olefins Nucleophilicity Ylides 540 Pyridinium‐derived mesoionic …