Chloroaluminate Ionic Liquid Immobilized on Magnetic Nanoparticles as a Heterogeneous Lewis Acidic Catalyst for the Friedel–Crafts Sulfonylation of Aromatic Compounds
Ngoc-Lan Thi Nguyen,
Quoc-Anh Nguyen,
Tien Khoa Le,
Thi Xuan Thi Luu,
Kim-Ngan Thi Tran,
Phuoc-Bao Pham
Affiliations
Ngoc-Lan Thi Nguyen
Faculty of Chemistry, University of Science, 227 Nguyen Van Cu, Dist. 5, Ho Chi Minh 700000, Vietnam
Quoc-Anh Nguyen
Faculty of Chemistry, University of Science, 227 Nguyen Van Cu, Dist. 5, Ho Chi Minh 700000, Vietnam
Tien Khoa Le
Faculty of Chemistry, University of Science, 227 Nguyen Van Cu, Dist. 5, Ho Chi Minh 700000, Vietnam
Thi Xuan Thi Luu
Faculty of Chemistry, University of Science, 227 Nguyen Van Cu, Dist. 5, Ho Chi Minh 700000, Vietnam
Kim-Ngan Thi Tran
Faculty of Chemistry, University of Science, 227 Nguyen Van Cu, Dist. 5, Ho Chi Minh 700000, Vietnam
Phuoc-Bao Pham
Faculty of Chemistry, University of Science, 227 Nguyen Van Cu, Dist. 5, Ho Chi Minh 700000, Vietnam
Chloroaluminate ionic liquid bound on magnetic nanoparticles (Fe3O4@O2Si[PrMIM]Cl·AlCl3) was prepared and used as a heterogenous Lewis acidic catalyst for the Friedel–Crafts sulfonylation of aromatic compounds with sulfonyl chlorides or p-toluenesulfonic anhydride. The catalyst’s stability, efficiency, easy recovery, and high recyclability without considerable loss of catalytic capability after four recycles were evidence of its advantages. Furthermore, the stoichiometry, wide substrate scope, short reaction time, high yield of sulfones, and solvent-free reaction condition also made this procedure practical, ecofriendly, and economical.
