Green synthesis of quinolines via A3-coupling by using graphene oxide-supported Brønsted acidic ionic liquid

Gajare, Shivanand; Patil, Audumbar; Hangirgekar, Shankar; Dhanmane, Sushilkumar A.; Rashinkar, Gajanan

doi:10.1007/s11164-020-04099-7

Cited by 23 publications

(9 citation statements)

References 56 publications

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“…[ 56 ] Along with d‐spacing, the crystallite size was determined by the Debye–Scherrer formula. [ 57 ] Crystallite size of pristine GO was 11 nm, further decreased to 10 nm for both 15 and 30 min PT GO. These observed changes in the crystallographic study revealed the effect of plasma treatment on GO preferred for electrical performance.…”

Section: Resultsmentioning

confidence: 99%

Synergetic Effect of Plasma‐Treated Graphene Oxide/Polymer Blends for Electrostatic Dissipative Applications

Humbe

Joshi

Deshmukh

2022

Physica Status Solidi (a)

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Prevention of electrostatic discharge is a very important aspect of the electronic domain. The development of electrostatic dissipative (ESD) materials is crucial for packaging materials. The present work focuses on chemical‐free air plasma‐treated graphene oxide (PT GO) loaded polyvinylidene fluoride (PVDF)/polysulfone (PSF) blends for ESD applications. Molecular vibrations and phases of the host polymer system and filler confirmed by Raman spectroscopy were observed. Decreased intensity and interplanar spacing demonstrate exfoliation of GO due to plasma exposure confirmed by X‐ray diffraction (XRD). GO clusters in the host polymer blend system are investigated by scanning electron microscope (SEM). The electrical properties of modified blends are obtained by an impedance analyzer. Enhanced electrical conductivity up to 10−3 (AC) and 10−1 (DC) S cm−1 for plasma‐treated samples demonstrated excellent electronic transportation within the polymer matrix mutually matching the ESD. Reduced area under the curve of impedance confirms the increased electrical conductivity of material due to enhanced conducting boundaries because of plasma exposure. Overall, adequate results of the modified polymer blends by plasma‐treated GO could be emerging material for ESD applications.

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Section: Resultsmentioning

confidence: 99%

Synergetic Effect of Plasma‐Treated Graphene Oxide/Polymer Blends for Electrostatic Dissipative Applications

Humbe

Joshi

Deshmukh

2022

Physica Status Solidi (a)

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“… [108] Further, Rashinkar et al . have reported the A 3 ‐coupling reaction of aryl aldehydes, anilines, and phenylacetylene for the synthesis of 2,4‐disubstituted quinolones ( 89 , Scheme 30), using graphene oxide supported benzimidazolium sulphonic acid based ILs [GrBenzImi]SO 3 H as the heterogeneous catalysts employing a water/ethanol (1 : 1) mixture as the green medium, wherein the catalysts, [GrBenzImi]SO 3 H have been recycled six times without losing significant output of the products [109] …”

Section: Introductionmentioning

confidence: 99%

Environmentally Benign Approaches towards the Synthesis of Quinolines

Kumar

Dhameliya²,

Sharma

et al. 2022

ChemistrySelect

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Greener and sustainable synthetic strategies have been evolving as the demanding domain of organic transformations during the last decade. The division of an environmentally benign methodology to construct bioactive heterocyclic scaffolds has always been a perpetual subject of interests for medicinal and synthetic chemists. Thus, the newer and novel synthetic methodologies of quinoline have drawn the attention of synthetic organic or medicinal chemists as evident from the growing numbers of publications. The current review focuses on some of the notable synthetic methodologies carried out in the last decade with the inherent objective to attain sustainability towards the synthesis. The key aspects of the review would include to highlight sustainable and environmentally benign approaches like the solvent‐free reactions, use of alternate reaction media (e. g., water, fluorous alcohols, polyethylene glycols, and ionic liquids), and alternate modes of synthesis such as microwave‐assisted synthesis and flow reactions, nano‐catalysts, etc.

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“…Quinoline is one of the most important and prominent N-heterocyclic structure that has been considered in a wide range of natural, synthetic, and medicinal compounds [22]. Quinolines have properties such as anti-malarial and anti-SARS-CoV-2 [23], corrosion inhibitor [24], HMG-CoA reductase inhibiting [25], antileishmanial, antitubercular, antitumor [26], antihypertensive [27], antibacterial, anti-asthmatic [28], anti-inflammatory [29], anticancer, antioxidant, OLEDs fabrication [30], antifungal, analgesic [31], anti-HIV [32], anticonvulsant [33], anti-Alzheimer [34], anti-diabetic, and anti-platelet activity [35] (Fig. 1).…”

Section: Introductionmentioning

confidence: 99%

“…Quinoline synthesis in this method, which involves a condensation followed by a cyclodehydration between 2-aminoarylketones and α-methylene ketones, is catalyzed by both acids and bases [36,37]. In recent years, metal-organic framework (MOFs) catalysts such as UiO-66(Hf) [38] and Zn-MOF [39], chiral phosphoric acid (CPA) [40], Solid SiO 2 /H 2 SO 4 [41], ionic liquid ImBuSO 3 H [42], Brønsted acid and Lewis acid [43], [GrBenzImi]SO 3 H [33], graphene oxide carbocatalyst [44], Fe 3 O 4 @SiO 2 / ISN/Cu(II) [45], DDBSA@MNP [46], microwave irradiation [47,48], and sulfated polyborate [49]. Organosilane [50], Mn(CO) 5 Br [51], and PAN EOS F [52] have also been utilized to be effective for this synthesis.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of multiple quinoline derivatives using novel ionic liquid-based nano-magnetic catalyst (MNPs@SiO2-Pr-AP-tribromide)

et al. 2022

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Recently, magnetic iron oxide nanoparticles functionalized with various organic groups increasing attention in the synthesis of the organic compounds. In this study, ionic liquid nano-magnetic pyridinium-tribromide (MNPs@SiO 2 -Pr-AP-tribromide) as a new nano-catalyst was synthesized. The structure of the catalyst was identified by FT-IR, TGA, XRD, FE-SEM, EDX, EDS, TEM and VSM analysis. The nanocatalyst was efficient for the synthesis of quinoline derivatives through the one-pot reaction of 2-amino-5-chlorobenzophenone and pentane-2,4-dione. The advantages of this catalyst are easy preparation, large surface area, renewability, high thermal stability, high activity, shortening reaction time, improving efficiency, easy purification, and mild reaction conditions.

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Green synthesis of quinolines via A3-coupling by using graphene oxide-supported Brønsted acidic ionic liquid

Cited by 23 publications

References 56 publications

Synergetic Effect of Plasma‐Treated Graphene Oxide/Polymer Blends for Electrostatic Dissipative Applications

Synergetic Effect of Plasma‐Treated Graphene Oxide/Polymer Blends for Electrostatic Dissipative Applications

Environmentally Benign Approaches towards the Synthesis of Quinolines

Synthesis of multiple quinoline derivatives using novel ionic liquid-based nano-magnetic catalyst (MNPs@SiO2-Pr-AP-tribromide)

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