Fe(HSO4)3 as an inexpensive, eco-friendly, heterogeneous and reusable catalyst for acetal/ketal formation and their facile regeneration

Synthesis of 14-Aryl- and Alkyl-14H-dibenzo[a,j]xanthenes Catalyzed by Silica-supported Ferric Hydrogensulfate

“…22,23 Recently, ferric hydrogensulfate has emerged as a promising solid acid catalyst for acid catalyzed reactions. [24][25][26][27][28][29][30] As a continuation of our study in catalytic ability of the ferric hydrogensulfate, [25][26][27][28][29] this work reports an efficient, mild and convenient method for the synthesis of some novel 14-substituted-14H-dibenzo[a,j]xanthenes in the presence of silica-supported ferric hydrogensulfate (SFH) Fe(HSO 4 ) 3 /SiO 2 (10 mol%) as a new catalyst (Scheme 1).…”

One-pot multicomponent route to propargylamines using ferric hydrogensulfate

“…All of the products are known products and all of the isolated products gave satisfactory IR and NMR spectra. Ferric hydrogensulfate was prepared according to previously reported procedure [33,34].…”

Preparation and Catalytic Properties of Carbon Carrier-Supported Ruthenium Catalysts for Acetalization/Ketalization Reactions

“…Moreover, acetal and ketal are also used in alcoholic drinks, soft drinks and ice creams . Previously, the catalysts employed in the acetalization or ketalization reactions are mostly protonic acids and a series of metal complexes including Rh, Pd, Pt, and Ce etc. However, many of these existing methods have more or less disadvantages such as environmental pollution, high cost, harsh reaction conditions, need of dehydrating agents, tedious work‐up procedures, stoichiometric amount of catalyst and low yields .…”

“…Whereas, the applications of CNTs and Vulcan XC‐72 supported Ru catalysts in the acetalization or ketalization reactions have not yet been reported. Concerning the general mechanism accepted for the condensation reaction, shown in Figure . The supported Ru was coordinated with diol (1), and the complex was then coordinated with the ketone or aldehyde by the interaction of oxygen atom in the substrate and the Ru atom in the catalyst (2).…”