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Generation and NMR spectra of 2-deoxy-pyranosyl oxocarbenium ions in HF/SbF5 at −40 °C. (A) Generation of ion 35 and 36 in HF/SbF5. (B) Experimental 1H- and 13C DEPT NMR of 2-deoxy-l-rhamnose oxocarbenium 34. (C) The generated 1H NMR spectrum of the oxocarbenium 35 compared to the simulated spectrum based on the computed CEL. (D) The generated 1H NMR spectrum of the oxocarbenium 36 compared to the simulated spectrum based on the computed CEL.
