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

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.

Automated summary

This study reports the production of aromatic ketones using a solid acid catalyst modified with p-divinylbenzene-vinylimidazole, 1,3-propanesultone, and trifluoromethanesulfonate. The catalyst showed high conversion and selectivity for anisole to p-methoxyacetophenone using acetic anhydride as the acylating agent. The porous acidic ionic liquid polymer efficiently acylated various aromatic substrates and was reusable.