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Angew Chem Int Ed Engl
; 58(5): 1355-1360, 2019 Jan 28.
Article
in English
| MEDLINE
| ID: mdl-30412349
ABSTRACT
Unambiguously confirmed by low-temperature inâ 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.