An efficient porous acidic ionic liquid polymer catalyst for Friedel–Crafts acylation reactions

Abstract

This work reports aromatic ketone production by a solid acid catalyst made from p-divinylbenzene-vinylimidazole modified with 1,3-propanesultone and trifluoromethanesulfonate. The catalyst exhibited excellent conversion and selectivity for anisole to p-methoxyacetophenone with the acylating agent acetic anhydride. The porous acidic ionic liquid polymer efficiently acylated multiple other aromatic substrates and was reusable.