Synthesis of new lariat ethers containing polycyclic phenols and heterocyclic aromatic compound on graphite surface via mannich reaction

Sharghi, Hashem; Khalifeh, Reza; Beni, Ali Reza Salimi

doi:10.1007/bf03245889

Cited by 29 publications

(7 citation statements)

References 19 publications

(12 reference statements)

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“…1,2-Phenylenedioxy diacetic acid (1,2-PDDA) and 1,2-phenylenedioxy diacetyl chloride (1,2-PDDACl) were synthesized as previously reported in the literature (steps I and II, Scheme ). The 1,2-PDDA-APTS was synthesized according to the previously reported procedure (step III), , by one-step condensation reaction between 1,2-PDDACl (1.35 g, 5 mmol) and APTS (2.5 mL, 10.2 mmol), using triethylamine (7 mL, 50 mmol) as a catalyst. The final product was obtained as a yellow solid.…”

Section: Methodsmentioning

confidence: 99%

Size-Selective Separation of Rare Earth Elements Using Functionalized Mesoporous Silica Materials

Castro

Drouin

et al. 2019

ACS Appl. Mater. Interfaces

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The separation and preconcentration of rare earth elements (REEs) from mineral concentrates in an economically and environmentally sustainable manner are difficult tasks due to their similar physicochemical properties. Herein, a series of tetradentate phenylenedioxy diamide (PDDA) ligands were synthesized and grafted on large-pore three-dimensional KIT-6 mesoporous silica. In solid-phase extraction, the hybrid sorbents enable a size-selective separation of REEs on the basis of the bite angles of the ligands. In particular, smaller REE3+ ions are preferentially extracted by KIT-6-1,2-PDDA, whereas light REEs with larger ionic radius are favored by KIT-6-1,3-PDDA. The exposure of bauxite residue digestion solution containing REEs as well as a number of types of competitive ions (including Th and U) to the sorbents results in selective recovery of target REEs. The possibility of regenerating the mesoporous sorbents through a simple loading–stripping–regeneration process is demonstrated over up to five cycles with no significant loss in REE extraction capacity, suggesting adequate chemical and structural stability of the new sorbent materials.

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Section: Methodsmentioning

confidence: 99%

Size-Selective Separation of Rare Earth Elements Using Functionalized Mesoporous Silica Materials

Castro

Drouin

et al. 2019

ACS Appl. Mater. Interfaces

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“…The progress of reactions was followed with TLC using aluminum oxide (Merck, Darmstadt, Germany, 60 F254, neutral). Bisamide crown compound 1 [ 18 ] and pyridyl derivative 2 [ 6 ] were synthesized following the literature procedures.…”

Section: Methodsmentioning

confidence: 99%

Novel Hybrid Benzoazacrown Ligand as a Chelator for Copper and Lead Cations: What Difference Does Pyridine Make

et al. 2022

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A synthetic procedure for the synthesis of azacrown ethers with a combination of pendant arms has been developed and the synthesized ligand, characterized by various techniques, was studied. The prepared benzoazacrown ether with hybrid pendant arms and its complexes with copper and lead cations were studied in terms of biomedical applications. Similarly to a fully acetate analog, the new one binds both cations with close stability constants, despite the decrease in both constants. The calculated geometry of the complexes correlate with the data from X-ray absorption and NMR spectroscopy. Coordination of both cations differs due to the difference between the ionic radii. However, these chelation modes provide effective shielding of cations in both cases, that was shown by the stability of their complexes in the biologically relevant media towards transchelation and transmetallation.

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“…Carbon nanomaterials have attracted the interest of researchers due to the high electrical and thermal conductivities, low production cost, oxidation stability, and low density, and diverse forms, such as graphene, fibers, horns, buds, onions, helices, etc. exist [36][37][38][39][40][41][42][43][44][45][46][47][48][49][50][51][52][53][54][55]. In addition, they are rather stable in strongly acidic and strongly basic solutions and capable to perform over a wide temperature range, increases the attractiveness of carbon nanomaterials [56].…”

Section: Copper Anchored On Functionalized Carbon Materials: Efficient and Recyclable Catalysts For Cuaac Reactionsmentioning

confidence: 99%

A systematic review on silica-, carbon-, and magnetic materials-supported copper species as efficient heterogeneous nanocatalysts in “click” reactions

Shiri¹,

Aboonajmi²

2020

Beilstein J. Org. Chem.

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In recent years, many inorganic silica/carbon-based and magnetic materials have been selected to arrest copper ions through a widespread range of anchoring and embedding methodologies. These inorganic supported nanocatalysts have been found to be efficient, environmentally friendly, recyclable, and durable. In addition, one of the vital issues for expanding new, stable, and reusable catalysts is the discovery of unique catalysts. The basis and foundation of this review article is to consider the recently published developments (2014–2019) in the synthesis and catalytic applications of copper supported by silica nanocomposites, carbon nanocomposites, and magnetic nanocomposites for expanding the “click” chemistry.

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Synthesis of new lariat ethers containing polycyclic phenols and heterocyclic aromatic compound on graphite surface via mannich reaction

Cited by 29 publications

References 19 publications

Size-Selective Separation of Rare Earth Elements Using Functionalized Mesoporous Silica Materials

Size-Selective Separation of Rare Earth Elements Using Functionalized Mesoporous Silica Materials

Novel Hybrid Benzoazacrown Ligand as a Chelator for Copper and Lead Cations: What Difference Does Pyridine Make

A systematic review on silica-, carbon-, and magnetic materials-supported copper species as efficient heterogeneous nanocatalysts in “click” reactions

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