Anchoring high density sulfonic acid based ionic liquid on the magnetic nano-magnetite (Fe3O4), application to the synthesis of hexahydroquinoline derivatives

Khazaei, Ardeshir; Sarmasti, Negin; Seyf, Jaber Yousefi

doi:10.1016/j.molliq.2018.04.125

Cited by 35 publications

(11 citation statements)

References 61 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The catalytic activity of functional polymers and ionic liquid containing polymers are well-established [26][27][28] . On the other hand, it has been reported that MOF can also exhibit catalytic activity 33 . Considering these facts and with the aim of bene ting from the advantages of both MOF and functional polymers, in this research, composite of MOF-Fe and PIL-AM was designed and prepared.…”

Section: Catalyst Activitymentioning

confidence: 99%

A Novel Composite of Ionic Liquid-containing Polymer and Metal-organic Framework as an Efficient Catalyst for Ultrasonic-assisted Knoevenagel Condensation

Sadjadi

Koohestani

Heravi

2021

Preprint

View full text Add to dashboard Cite

1-Butyl-3-vinylimidazolium chloride was synthesized and polymerized with acrylamide to furnish an ionic liquid-containing polymer, which was then used for the formation of a composite with iron-based metal-organic framework. The resultant composite was characterized with XRD, TGA, FE-SEM, FTIR, EDS and elemental mapping analyses and its catalytic activity was appraised for ultrasonic-assisted Knoevenagel condensation. The results confirmed that the prepared composite could promote the reaction efficiently to furnish the corresponding products in high yields in very short reaction times. Moreover, the composite exhibited high recyclability up to six runs. It was also established that the activity of the composite was higher compared to pristine metal-organic framework or polymer.

show abstract

Section: Catalyst Activitymentioning

confidence: 99%

A Novel Composite of Ionic Liquid-containing Polymer and Metal-organic Framework as an Efficient Catalyst for Ultrasonic-assisted Knoevenagel Condensation

Sadjadi

Koohestani

Heravi

2021

Preprint

View full text Add to dashboard Cite

show abstract

“…This can be due to the nature of the support or unsuitable supporting procedure. Hence, development of supported ILs with high loading of ILs is of great importance [44].…”

Section: Introductionmentioning

confidence: 99%

Halloysite Nanoclay with High Content of Sulfonic Acid-Based Ionic Liquid: A Novel Catalyst for the Synthesis of Tetrahydrobenzo[b]pyrans

et al. 2021

View full text Add to dashboard Cite

One of the main drawbacks of supported ionic liquids is their low loading and consequently, low activity of the resultant catalysts. To furnish a solution to this issue, a novel heterocyclic ligand with multi imine sites was introduced on the surface of amino-functionalized halloysite support via successive reactions with 2,4,6-trichloro-1,3,5-triazine and 2-aminopyrimidine. Subsequently, the imine sites were transformed to sulfonic acid-based ionic liquids via reaction with 1,4-butanesultone. Using this strategy, high loading of ionic liquid was loaded on halloysite nanoclay. The supported ionic liquid was then characterized with XRD, SEM, TEM, EDS, FTIR, BET, TGA and elemental mapping analysis and utilized as a metal-free Brønsted acid catalyst for promoting one-pot reaction of aldehydes, dimedone and malononitrile to furnish tetrahydrobenzo[b]pyrans. The catalytic tests confirmed high performance of the catalyst. Moreover, the catalyst was stable upon recycling.

show abstract

“…Due to the vast biological and synthetic importance of 1,4-DHP derivatives, several protocols have been reported via a one-pot strategy and employing different catalysts like nano-tungsten trioxide-supported sulfonic acid (n-WSA), 24 sulfated boric acid nanoparticles, 25 chitosan-supported copper(II) sulfate, 26 Fe 3 O 4 @SiO 2 @Si-(CH 2 ) 3 @melamine-picolineimine@SO 3 H, 27 sulfated polyborate, 28 Fe 3 O 4 /KCC-1/BPAT, 29 chitosan-supported vanadium oxo, 30 magnetic guanidinylated chitosan, 31 nano-ZrO 2 -SO 3 H (n-ZrSA), 32 Gd(OTf) 3 , 33 nicotinic acid, 34 γ-Fe 2 O 3 /Cu@cellulose, 35 SBA-15@AMPD-Co, 36 sulfamic acid, 19 Fe 3 O 4 @D-NH-(CH 2 ) 4 -SO 3 H, 37 Cu-adenine@boehmite, 38 hydromagnesite, 39 Cu(OTf) 2 , 40 ascorbic acid, 41 NS-C 4 (DABCO-SO 3 H) 2 ·4Cl, 42 CBr 4 , 43 and aminated CNTs. 14 Many of these methods either suffer from usage of reflux conditions, lower yields, or long reaction times.…”

Section: Introductionmentioning

confidence: 99%

Four-Component Fusion Protocol with NiO/ZrO₂ as a Robust Recyclable Catalyst for Novel 1,4-Dihydropyridines

et al. 2019

View full text Add to dashboard Cite

Nickel oxide loaded on zirconia (NiO/ZrO2) as an expedient catalyst is reported for the synthesis of 18 unsymmetrical 1,4-dihydropyridine derivatives. The Lewis acidic nature of the catalyst proved an excellent choice for the one-pot, four-component fusion reaction with excellent yields of 89–98% and a completion time of 20–45 min. Mechanistic studies show that enamine and imine functionalities are the two possible pathways for the formation of 1,4-dihydropyridines with high selectivity. Crystal structures of two novel compounds (5a, 5c) were reported. The catalyst demonstrated reusability up to six cycles. The reaction at room temperature and ethanol as a solvent make this protocol green and economical.

show abstract

Anchoring high density sulfonic acid based ionic liquid on the magnetic nano-magnetite (Fe3O4), application to the synthesis of hexahydroquinoline derivatives

Cited by 35 publications

References 61 publications

A Novel Composite of Ionic Liquid-containing Polymer and Metal-organic Framework as an Efficient Catalyst for Ultrasonic-assisted Knoevenagel Condensation

A Novel Composite of Ionic Liquid-containing Polymer and Metal-organic Framework as an Efficient Catalyst for Ultrasonic-assisted Knoevenagel Condensation

Halloysite Nanoclay with High Content of Sulfonic Acid-Based Ionic Liquid: A Novel Catalyst for the Synthesis of Tetrahydrobenzo[b]pyrans

Four-Component Fusion Protocol with NiO/ZrO₂ as a Robust Recyclable Catalyst for Novel 1,4-Dihydropyridines

Contact Info

Product

Resources

About

Anchoring high density sulfonic acid based ionic liquid on the magnetic nano-magnetite (Fe3O4), application to the synthesis of hexahydroquinoline derivatives

Cited by 35 publications

References 61 publications

A Novel Composite of Ionic Liquid-containing Polymer and Metal-organic Framework as an Efficient Catalyst for Ultrasonic-assisted Knoevenagel Condensation

A Novel Composite of Ionic Liquid-containing Polymer and Metal-organic Framework as an Efficient Catalyst for Ultrasonic-assisted Knoevenagel Condensation

Halloysite Nanoclay with High Content of Sulfonic Acid-Based Ionic Liquid: A Novel Catalyst for the Synthesis of Tetrahydrobenzo[b]pyrans

Four-Component Fusion Protocol with NiO/ZrO2 as a Robust Recyclable Catalyst for Novel 1,4-Dihydropyridines

Contact Info

Product

Resources

About

Four-Component Fusion Protocol with NiO/ZrO₂ as a Robust Recyclable Catalyst for Novel 1,4-Dihydropyridines