2023
DOI: 10.1039/d3ra01552a
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Synthesis of mesoporous SiO2–CeO2 hybrid nanostructures with high catalytic activity for transamidation reaction

Abstract: Mechanism of transamidation reaction between acetamide and N-heptyl amine to yield N-heptyl acetamide, catalyzed by mesoporous SiO2–CeO2 hybrid nanostructures.

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Cited by 3 publications
(2 citation statements)
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“…25–27 In the last few decades, nanoparticles as catalysts have garnered considerable interest because of their enhanced selectivity and strong catalytic activity in organic reactions. 28–30 Recently, a variety of new nano-catalysts, designed specifically for the transamidation of amides, have been developed, such as Fe(OH) 3 @Fe 3 O 4 nanoparticles, 31 guanidine acetic acid (GAA) nanoparticles, 32 magnetically separable Fe 3 O 4 nanoparticles, 33 mesoporous silica nanoparticles (MSNs), 34 a sulfated poly borate nanocatalyst, 35 an Fe 3 O 4 –OSO 3 H nanocatalyst, 36 a SiO 2 –CeO 2 hybrid nanocomposite, 37 and nanosized zeolite beta (MSNs) 38 are used for primary amides and citric acid-coated nanoparticles (Fe 3 O 4 –CA NPs) for transamidation of primary and secondary amides. 39 Despite their numerous advantages, all these nanoparticle-catalyzed transamidation reactions involving unactivated amides require high temperatures and longer time.…”
Section: Introductionmentioning
confidence: 99%
“…25–27 In the last few decades, nanoparticles as catalysts have garnered considerable interest because of their enhanced selectivity and strong catalytic activity in organic reactions. 28–30 Recently, a variety of new nano-catalysts, designed specifically for the transamidation of amides, have been developed, such as Fe(OH) 3 @Fe 3 O 4 nanoparticles, 31 guanidine acetic acid (GAA) nanoparticles, 32 magnetically separable Fe 3 O 4 nanoparticles, 33 mesoporous silica nanoparticles (MSNs), 34 a sulfated poly borate nanocatalyst, 35 an Fe 3 O 4 –OSO 3 H nanocatalyst, 36 a SiO 2 –CeO 2 hybrid nanocomposite, 37 and nanosized zeolite beta (MSNs) 38 are used for primary amides and citric acid-coated nanoparticles (Fe 3 O 4 –CA NPs) for transamidation of primary and secondary amides. 39 Despite their numerous advantages, all these nanoparticle-catalyzed transamidation reactions involving unactivated amides require high temperatures and longer time.…”
Section: Introductionmentioning
confidence: 99%
“…Stoichiometric amounts of AlCl 3 , [13] N,N-carbonyldiimidazole, [14] boric acid, [12d] potassium tert-butoxide, [15] borate esters, [16] and LiHMDS [12f] can promote the reaction, and in addition to biocatalytic transamidations in the presence of enzymes, [17] several procedures involving an in-situ activation of the starting amide, [18] those based on ionic liquid catalysts [19] and even a catalyst-free procedure [20] have been reported. Moreover, the use of catalytic amounts (5-50 mol%) of bisacetoxyiodobenzene, [21] povidone iodine, [22] hydroxylamine hydrochloride, [23] benzoic acid, [24] L-proline,, [25] chitosan, [26] benzotriazole, [27] SiO 2 À H 2 SO 4 and strongly acidic mesoporous silica, [28] H-β-zeolite [29] and alumina, [30] inter alia, [31] have been also described in the field of transition metal-free catalysis. In this regard, a triflic acid-iodide co-catalyzed transamidation of unactivated tertiary amides based on an amide re-routing through reactive acyl iodide intermediates has recently been published.…”
mentioning
confidence: 99%