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Castelli, Ugo; Lohier, Jean-Francois; Drukenmüller, Ines; Mingot, Agnes; Bachman, Christian; Alayrac, Carole; Marrot, Jerome; Stierstorfer, Karin; Kornath, Andreas; Gaumont, Annie-Claude and Thibaudeau, Sebastien (2019): Evidence of Phosphonium-Carbenium Dication Formation in a Superacid: Precursor to Fluorinated Phosphine Oxides. In: Angewandte Chemie-International Edition, Vol. 58, No. 5: pp. 1355-1360

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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.

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