Dual behaviour of sepiolites as single electron acceptors of Lewis acids: reactivity of two α-acetoxystyrenes adsorbed on a iron(III)-exchanged sepiolite

Article abstract of DOI:10.1002/recl.19921110303

Iron(III)-exchanged sepiolites exhibit dual behaviour as catalysts in the reactions of α-acetoxystyrenes 1a, b; operating as Lewis acids (to give 2-5) in thermolysis reactions under reduced pressure or as single-electron acceptors (to give 7) in photolysis under aerobic conditions.