Indium triflate in 1-isobutyl-3-methylimidazolium dihydrogen phosphate: an efficient and green catalytic system for Friedel–Crafts acylation

Tunable Aryl Imidazolium Recyclable Ionic Liquid with Dual Brønsted–Lewis Acid as Green Catalyst for Friedel–Crafts Acylation and Thioesterification

“…The changing the connected carbon and oxygen atoms were accomplished through para selective functionalization of benzoic acid in the presence of palladium catalyst [16][17][18][19]. The aromatic ketones of Friedel-Crafts acylation are a fundamental mediator in a broad range, such as pharmaceutical dyes, fragrances, and agrochemicals [20], and are convenient for use in the synthesis of poly (4-vinyl pyridine)-triflic acid, indium triflate [21,22], perfluoroalkane sulfonic acidic resin is an acid catalyst with catalytic activity for many reactions giving high selectivity. One major drawback of this catalyst is its inefficient swelling by aprotic organic solvents, which generally leads to low reaction rates and others [23].…”

The Beneficial Sinergy of MW Irradiation and Ionic Liquids in Catalysis of Organic Reactions

“…A screening of catalytic efficiency of various metal triflates was performed investigating acetylation of 1,3,5-trimethylbenzene with acetic anhydride [89]. Among the 14metal triflates examined, In(OTf) 3 gave the best results, being superior also to the above discussed Bi(OTf) 3 catalyst.…”

“…Tb(OTf) 3 emerged as the catalyst of choice after a screening of 19metal triflates; moreover, it could be recovered and re-used three times, with only slight decrease in product isolated yield. A screening of catalytic efficiency of various metal triflates was performed investigating acetylation of 1,3,5-trimethylbenzene with acetic anhydride [89]. Among the 14metal triflates examined, In(OTf)3 gave the best results, being superior also to the above discussed Bi(OTf)3 catalyst.…”

The Catalytic Performance Study of Chloroaluminate Ionic Liquids on Long-Chain Alkenes Alkylation

“…33−35 A number of acidic ionic liquids and neutral ionic liquids have been developed and successfully applied to esterification reaction, 36,37 cleavages of ethers, 38,39 alkylation, 40,41 aldol condensation, 42 epoxidation, 43 Michael addition, 44,45 and Friedel−Crafts acylation. 46 Lewis acidic chloroaluminate ionic liquids (ILs) were used as a more sustainable alternative to alkylation due to the possibility of acidity control and the unique physicochemical properties. Moreover, the chloroaluminate ionic liquids have the special characteristics of limited solubility in the IL phase, environmentally friendly, less corrosion of equipment, and so on, so that they were easily separated from the alkylation products easily.…”