The first synthesis of a 2‐azabicyclo[2.2.0]hexenium salt is described. It is available from pyridine in four steps. This strained bicyclic ammonium salt was characterized by 1H, 13C, and 2D NMR spectroscopy as well as by XRD. Due to its unusual NMR spectroscopic characteristics, DFT calculations were performed to additionally support the proposed structure. The strained cation shows significant hyperconjugative stabilization.
European Journal of Organic Chemistry – Wiley
Published: Jan 14, 2018
Keywords: ; ; ; ;
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