“…For instance, they can be synthesized from 2-iodo-2-deoxyglycoside, followed by dehalogenation [5,6]. The acid-catalyzed addition to glycals represents the most direct method that can be operated under various conditions, including hydrogen bromide [7], triphenylphosphine hydrogenbromide [8][9][10][11][12], Dowex-50 [H ? ] [13], CeCl 3 and LaCl 3 hydrates in combination with NaI, [14,15], TMSOTf-NEt 3 [16,17], BCl 3 [18], ceric ammonium nitrate [19], GaCl 3 [20] and Rhenium(V) complexes [21].…”