Fig. 9: The IRMPD spectrum of the mannosyl cation reported by Rijs and Boltje60.
From: Elucidating reactive sugar-intermediates by mass spectrometry
The IRMPD data (black line) and the calculated spectra (purple-filled) evidence the existence of a C2-dioxolenium ion. This structure data supports the C2-acyl neighboring group participation. Adapted from https://doi.org/10.1021/jacs.8b0123660, under the terms of the CC BY 4.0 license, https://creativecommons.org/licenses/by/4.0/.
