Novel SO3H-functionalized polyoxometalate-based ionic liquids as highly efficient catalysts for esterification reaction

Solvent‐free synthesis of compounds containing chromene core catalyzed by novel Brønsted acidic ionic liquids‐ClO4

“…Recently, we have prepared some new BAILs with acidic hydrogen‐containing functional groups attached to the cation based on 1,4‐dimethyl piperazinium and 1,10‐phenantrolinium cations with phosphotungstate anion counterparts as powerful acidic catalysts for the synthesis of 3,3′‐diaryloxindoles, [ 21 ] 2H‐indazolo[2,1‐b]phthalazine‐triones, [ 22 ] esterification reaction [ 23 ] , and selective oxidation of alcohols. [ 24 ]…”

“…To circumvent these constraints, the evolution of green and environmentally friendly methods by using effective and achievable catalysts with high catalytic activity and short reaction time for the preparation of chromene is still of interest. Consequently, by considering unique catalytic properties of BAILs and in the following of our previous study to introduce novel sultone based BAILs with phosphotungstate anion (BAILs‐PW), [ 21–24 ] a series of new BAILs with perchlorate anion (BAIL‐ClO 4 ) based on sulfonic acid functionalized 1,10‐phennantroline and 1,4‐dimethylpiperazine (Scheme 2) are synthesized, characterized, and their capability is investigated for the synthesis of structurally diverse chromenes under solvent‐free conditions (Scheme 3).…”

Click approach to the novel 1,2,3-triazolium phosphotungstate organic–inorganic hybrids for the highly promoted synthesis of spirooxindoles

“…and along with our recent efforts to prepare some novel efficient organic-inorganic hybrids [28][29][30][31], herein, we aim to use click synthesized 1,2,3-triazoles as the cationic source for the preparation of some novel sultone-based ionic organic-inorganic hybrid catalysts and investigate their catalytic efficiency for the preparation of spirooxindole.…”

Polyoxometalates‐Based Ionic Liquids (POMs‐ILs) for Electrochemical Applications

“…combining [PW 12 O 40 ] 3− anion with a poly(ethylene glycol) (PEG)‐ containing quaternary ammonium cation that exhibited unusually high conductivity . Their potential has been explored in catalysis (namely in desulfurization, esterification, production of ketones, asymmetric di‐hydroxylation of olefins, in CO 2 conversion, in anti‐corrosion, antibacterial and antimicrobial coatings, and as photoluminescence materials . Concerning their electrochemical properties, POMs‐ILs have been prepared and studied as electrochromic materials for modification of carbon composite electrodes, for selective determination of ascorbic acid based on modified glassy carbon electrodes and towards the oxidation of the NADH coenzyme, for catalytic reduction of nitrite, bromate and hydrogen peroxide using a modified carbon paste electrodes, for electroluminescence as good electron‐ transport, as reversible phase transformation ionic‐liquid‐type gels, as new hybrid gel electrolytes, for the modification of polycrystalline gold electrode, as well as for high performance Li−S battery cathode …”