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Evidence of Phosphonium‐Carbenium Dication Formation in a Superacid: Precursor to Fluorinated Phosphine Oxides |
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| Authors: | Ugo Castelli Jean‐Franois Lohier Ines Drukenmüller Agns Mingot Christian Bachman Carole Alayrac Jrme Marrot Karin Stierstorfer Andreas Kornath Annie‐Claude Gaumont Sbastien Thibaudeau |
| Institution: | Ugo Castelli,Jean‐François Lohier,Ines Drukenmüller,Agnès Mingot,Christian Bachman,Carole Alayrac,Jérôme Marrot,Karin Stierstorfer,Andreas Kornath,Annie‐Claude Gaumont,Sébastien Thibaudeau |
| Abstract: | Unambiguously confirmed by low‐temperature in situ NMR experiments, X‐ray diffraction and vibrational spectroscopy, phosphonium‐carbenium superelectrophiles are shown to be generated in strong acidic conditions. Representing crucial intermediates, their exploitation allows for the synthesis of unprecedented fluorinated (cyclic) phosphine oxides. |
| Keywords: | Cyclisierungen Fluorierungen Phosphanoxid Superelektrophile Supersä uren |