“… 14 Iron salts of the general formula FeX 3 (with X = Cl, 15 CF 3 SO 3 , 16 NO 3 (ref. 17 ) or SO 4 ) 18 have successfully been employed as catalysts or reagents in O -glycosylation reactions or Ferrier rearrangements. However, we are not aware of the application of iron-based complexes beyond these simple, Lewis acidic iron salts.…”