Scandium(iii) triflate immobilised in ionic liquids: a novel and recyclable catalytic system for Friedel–Crafts alkylation of aromatic compounds with alkenes

Abstract

Scandium(III) triflate catalysed Friedel–Crafts alkylation of aromatic compounds with alkenes proceeded readily in the hydrophobic ionic liquid solvents based on 1,3-dialkylimidazolium salts with easy catalyst/solvent recycling, whereas these reactions did not occur in common organic solvents, water or hydrophilic ionic liquids at all.