Macroreticular p-((omega)-sulfonic-perfluoroalkylated) polystyrene ion-exchange resins: a new type of selective solid acid catalyst

Macroreticular p-((omega)-sulfonic-perfluoroalkylated) polystyrene (FPS) cation-exchange resins 3 have been synthesized by sequential p-perfluoroalkylation of macroreticular polystyrene (PS)1 with (omega)-fluorosulfonylperfluorodiacyl peroxide 2, hydrolysis and acidification; the fluorinated mesoporous resins exhibited higher activity and selectivity than commercial Amberlyst 36 and Nafion NR50 in the cyclization of pseudoionone.