Design and characterization of [(Et)3 N-H]FeCl4 as a nanomagnetic ionic liquid catalyst for the synthesis of xanthene derivatives under solvent-free conditions

Ezabadi, Ali; Salami, Masoumeh

doi:10.1007/s11164-021-04637-x

Cited by 6 publications

(3 citation statements)

References 37 publications

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“…densation of substituted benzaldehyde (47) and -naphthol (81; Scheme 22) under neat conditions. 76 The present catalyst was also explored for the synthesis of 3,4,6,7-tetrahydro-3,3,6,6-tetramethyl-9-aryl-2H-xanthene-1,8(5H,9H)diones (84) from 47 and dimedone (83) in 86-98% of yields. The ionic-liquid-based nanomagnetic catalysts were synthesised from triethyl amine with conc.…”

Section: Account Synlettmentioning

confidence: 99%

“…Ezabadi and Salami reported the triethyl ammonium ferric chloride catalysed synthesis of 14‑aryl‑14 H ‑dibenzo[ a , j ]xanthenes ( 82 ) via Knoevenagel–Michael cyclocondensation of substituted benzaldehyde ( 47 ) and β-naphthol ( 81 ; Scheme 22 ) under neat conditions. 76 The present catalyst was also explored for the synthesis of 3,4,6,7‑tetrahydro‑3,3,6,6‑tetramethyl‑9‑aryl‑2 H ‑xanthene‑1,8(5 H ,9 H )diones ( 84 ) from 47 and dimedone ( 83 ) in 86–98% of yields. The ionic-liquid-based nanomagnetic catalysts were synthesised from triethyl amine with conc.…”

Section: Aza- and Oxa-heterocycle Synthesis Catalysed By Mnpsmentioning

confidence: 99%

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Synthesis of Nitrogen- and Oxygen-Containing Heterocycles Catalysed by Metal Nanoparticles Reported in 2022

Dhameliya,

Shah,

Shah

et al. 2024

Synlett

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The versatility of aza- and oxa-heterocyclic compounds has garnered significant attention in recent times. A large number of currently approved pharmaceutical products include nitrogen- and oxygen-containing heterocycles. Recent nanotechnological developments have propelled an upsurge in the applications of nanocatalysis for heterocyclic synthesis. Metal nanoparticles (MNPs) have emerged as promising catalysts for the synthesis of aza- and oxa-heterocycles owing to their unique physicochemical properties. Various MNPs including gold, silver, nickel and palladium have been evaluated for their catalytic activities in different reaction types, including cyclisation, coupling, hydrogenation and oxidative transformations. The MNPs have exhibited remarkable catalytic efficiency when utilised under optimal conditions. These catalysts have showcased high reusability and recyclability, yielding satisfactory amounts of the desired heterocyclic compound. The present work provides a detailed overview of recent advances in the area of MNP-assisted synthetic construction of aza- and oxa-heterocycles, published during the previous calendar year, 2022. The review serves as a valuable resource and also paves the way for future investigations in the development of novel catalytic strategies for heterocycle synthesis.1 Introduction2 Nanocatalysis3 Aza- and Oxa-Heterocycle Synthesis Catalysed by MNPs3.1 AuNPs3.2 CuNPs3.3 CoNPs3.4 FeNPs3.5 NiNPs3.6 PdNPs3.7 PtNPs3.8 SiNPs3.9 ZnNPs3.10 Bimetallic NPs3.11 Other MNPs4 Summary and Outlook

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Section: Account Synlettmentioning

confidence: 99%

Section: Aza- and Oxa-heterocycle Synthesis Catalysed By Mnpsmentioning

confidence: 99%

Synthesis of Nitrogen- and Oxygen-Containing Heterocycles Catalysed by Metal Nanoparticles Reported in 2022

Dhameliya,

Shah,

Shah

et al. 2024

Synlett

View full text Add to dashboard Cite

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“…Ezabadi and Salami prepared a novel nanomagnetic ionic liquid [(Et) 3 NH]FeCl 4 by treating triethylamine with hydrochloric acid followed by the addition of ferric chloride hexahydrate, and used it to catalyze the synthesis of xanthene derivatives 3 and 5 (Scheme 1 ) under solvent-free conditions via Knoevenagel condensation of carbaldehydes 1 with β-naphthol ( 2 ) and dimedone ( 4 ). 48 The catalysts were assessed using FT-IR, Raman spectrometry, UV/visible spectrophotometry, TGA, FE-SEM, XRD, NMR, MS and VSM. Using an external magnet, the catalyst could be recovered and successfully reused for up to 5 cycles.…”

Section: Construction Of Heterocycles Catalyzed By Ionic Liquidsmentioning

confidence: 99%

The Synthesis of Nitrogen- and Oxygen-Containing Heterocyclic Scaffolds Assisted by Ionic Liquids: A 2022 Literature Survey

Dhameliya,

Raghani,

Desai

et al. 2023

Synlett

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Heterocycles have gained recognition as vital components in approved drugs, drawing substantial attention from the scientific community. Ionic liquids (ILs) have been utilized for their transformative role in heterocycle synthesis, showcasing distinctive properties that are pivotal in diverse chemical transformations, while also acting as effective catalysts and offering safer alternatives to volatile organic solvents. This review delves into the synthesis of nitrogen- and oxygen-containing heterocyclic structures, employing various ILs such as ammonium, cholinium, DABCO-based, DBU-based, guanidinium, imidazolium, phosphonium, pyridinium, and miscellaneous. They have proven indispensable in facilitating reactions like Fischer-indole synthesis, Biginelli, Knoevenagel condensations and many more. Notably, the recyclability of ILs serves as a valuable asset, aiding in the completion of intricate synthetic pathways, multicomponent reactions, and one-pot syntheses, ultimately enhancing yields. This review seeks to guide researchers in selecting suitable ILs for specific chemical reactions, enabling the synthesis of aza- and/ or oxa-heterocycles described in 2022. This advancement holds promising prospects for drug development and other applications within the domain of heterocyclic chemistry.

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Synthesis and characterization of two novel diethylamine-based dicationic Brönsted acidic ionic liquids and evaluation of their catalytic and antibacterial behavior

2023

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Design and characterization of [(Et)3 N-H]FeCl4 as a nanomagnetic ionic liquid catalyst for the synthesis of xanthene derivatives under solvent-free conditions

Cited by 6 publications

References 37 publications

Synthesis of Nitrogen- and Oxygen-Containing Heterocycles Catalysed by Metal Nanoparticles Reported in 2022

Synthesis of Nitrogen- and Oxygen-Containing Heterocycles Catalysed by Metal Nanoparticles Reported in 2022

The Synthesis of Nitrogen- and Oxygen-Containing Heterocyclic Scaffolds Assisted by Ionic Liquids: A 2022 Literature Survey

Synthesis and characterization of two novel diethylamine-based dicationic Brönsted acidic ionic liquids and evaluation of their catalytic and antibacterial behavior

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