2016
DOI: 10.1039/c5nj02430g
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Nano-zirconia as an excellent nano support for immobilization of sulfonic acid: a new, efficient and highly recyclable heterogeneous solid acid nanocatalyst for multicomponent reactions

Abstract: Nano-zirconia-supported sulfonic acid as a novel, highly efficient and recyclable heterogeneous nanocatalyst is reported for the synthesis of multicomponent reactions.

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Cited by 105 publications
(39 citation statements)
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“…In continuation of our ongoing efforts on synthesizing new heterogeneous nanocatalysts for organic reactions [14][15][16][17], herein, we wish to report the preparation and application of a novel type of recyclable basic nanocatalyst applying TDI as a precursor of amine groups (Scheme 1).…”
Section: Resultsmentioning
confidence: 99%
“…In continuation of our ongoing efforts on synthesizing new heterogeneous nanocatalysts for organic reactions [14][15][16][17], herein, we wish to report the preparation and application of a novel type of recyclable basic nanocatalyst applying TDI as a precursor of amine groups (Scheme 1).…”
Section: Resultsmentioning
confidence: 99%
“…Also few quinolines are used as agrochemical agents . Recently, these moiety protocols have been described using different catalysts such as K 2 CO 3, AcOH, ZrO 2 ‐SO 3 H, nano‐Fe 3 O 4 and ZnO/ultrasound . Some of these protocols have shortcomings such as use of toxic reagents, harsh reaction conditions, expensive reagents and catalysts, lengthy reaction times, lower yields and/or non‐recyclability, which limits their scope in practical applications.…”
Section: Introductionmentioning
confidence: 99%
“…The most commonly used protocol for the synthesis of 1,8‐dioxodecahydroacridines involves reactions between aromatic aldehydes, dimedone and nitrogen sources such as ammonium acetate, hydroxylamines, aniline, ammonium bicarbonate and ammonium hydroxide . The previously reported catalysts for the synthesis of 1,8‐dioxodecahydroacridine derivatives are DCH (1,3‐dichloro‐5,5‐dimethylhydantoin), amberlyst‐15, SO 4 2− /ZrO 2 , nano‐Fe 3 O 4 @SiO 2 ‐SO 3 H, Brønsted acidic imidazolium salts containing perfluoroalkyl tails, ionic liquids, CAN, MNPs−N‐propyl‐benzoguanamine‐SO 3 H, Fe 3 O 4 @SiO 2 –MoO 3 H, silica iodide, KH 2 PO 4, FSG−Hf(NPf 2 ) 4 , MCM‐41‐SO 3 H, oxalic acid, SiO 2 ‐ZnCl 2, TPA NPs/PAA, magnetic titania‐SO 3 H, Fe 3 O 4 @DA‐SO 3 H, nano‐ferrite and n‐ZrSA …”
Section: Introductionmentioning
confidence: 99%