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Cantin, Thomas; Morgenstern, Yvonne; Mingot, Agnes; Kornath, Andreas und Thibaudeau, Sebastien (2020): Evidence and exploitation of dicationic ammonium-nitrilium superelectrophiles: direct synthesis of unsaturated piperidinones. In: Chemical Communications, Bd. 56, Nr. 75: S. 11110-11113

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Abstract

Exploiting superacid activation, the reactivity of aminonitriles was enhanced through the transient formation of highly reactive ammonium-nitrilium superelectrophiles. Demonstrated by usingin situlow-temperature NMR experiments and confirmed by X-ray diffraction analysis, these dications can be intramolecularly trapped by non-activated alkenes to generate unsaturated piperidinones, including enantioenriched ones, in a straightforward way.

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