A green, facile and recyclable Mn3O4/MWCNT nano-catalyst for the synthesis of quinolines via one-pot multicomponent reactions

Harikrishna, Singamsetty; Robert, Alice R.; Ganja, Himavathi; Maddila, Suresh; Jonnalagadda, Sreekantha B.

doi:10.1016/j.scp.2020.100265

Cited by 14 publications

(5 citation statements)

References 36 publications

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“…The catalyst facilitates the first step of the reaction which is Knoevenagel reaction followed Michael addition and a subsequent intramolecular cyclization (Scheme 18). [85] Mal and co-workers devised a one-pot three component approach for the synthesis of structurally diverse trisubstituted quinolines using a heterogeneous nanocatalysts (MCM41)pyridine from isatin and dialkyl acetylene dicarboxylates in alcohol. The use of MCM41 silica enables the heterogenous catalyst system to be functionalized with various organic and inorganic moiety owing to the presence of silanol groups in the surface.…”

Section: Nanocatalysts Assisted Synthesis Of Quinolinementioning

confidence: 99%

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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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Section: Nanocatalysts Assisted Synthesis Of Quinolinementioning

confidence: 99%

“…The catalyst facilitates the first step of the reaction which is Knoevenagel reaction followed Michael addition and a subsequent intramolecular cyclization (Scheme 18). [85] …”

Section: Introductionmentioning

confidence: 99%

Environmentally Benign Approaches towards the Synthesis of Quinolines

Kumar

Dhameliya²,

Sharma

et al. 2022

ChemistrySelect

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“…It was noted that the presence of either MWCNT or Mn 3 O 4 alone could catalyze this three‐component reaction, and low yields of quinolines (68% and 77%) were observed. [35] In addition, recyclability of this heterogeneous catalyst has been studied eight times in a short period of time, 15 min.…”

Section: Transition Metal Complexes and Metal Oxides On Cntsmentioning

confidence: 99%

Recyclable catalysts for the synthesis of heterocyclic compounds using carbon materials

Rai

Ranganath

2020

Journal of Heterocyclic Chem

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Heterogeneous catalytic reactions play a major role in the industry to produce a number of compounds that are essential in our daily life. Synthesis of heterocyclic compounds using heterogeneous catalysis is one of the rapidly growing research areas. Inherent ability to produce high selectivity and potentiality to recycle, the catalyst makes the heterogeneous systems more attractive, especially on the industrial scale. Various recyclable catalytic systems have been extensively developed for the synthesis of heterocyclic compounds via dehydration, partial oxidations, three‐component couplings, dehydrogenations, and others. Different supports like polymers, metal oxides, and quite recently carbon supports like carbon nanotubes (CNTs), graphene oxide (GO), graphitic nitride (GCN), and nitrogenous carbon materials (NGr) have been widely used to synthesize diverse heterocycles. The use of GO in the synthesis of heterocyclic compounds has been reviewed recently, hence we did not focus on GO in this review. The aim of this review article is to explore the emerging areas of carbon‐based heterogeneous materials such as CNTs, GCN, and NGr in the synthesis of heterocycles. This review also focused on the most recent examples, their preparation, and recycling studies of highly excited catalytic systems used for the heterocycles.

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“…One of the crucial factors in multicomponent reactions is the selection of the appropriate catalyst. Several catalysts such as nanoparticles and magnetic nanoparticles have been reported to synthesize organic and heterocyclic compounds in multicomponent reactions ( Amoozadeh et al, 2016 ; Chen et al, 2019 ; Ghorbani-Choghamarani et al, 2019 ; Harikrishna et al, 2020 ; Arlan et al, 2021 ).…”

Section: Introductionmentioning

confidence: 99%

Application of novel Fe3O4/Zn-metal organic framework magnetic nanostructures as an antimicrobial agent and magnetic nanocatalyst in the synthesis of heterocyclic compounds

Bashar

Kareem²,

Hasan³

et al. 2022

Front. Chem.

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Using the microwave-assisted method, novel Fe3O4/Zn-metal organic framework magnetic nanostructures were synthesized. The crystallinity, thermal stability, adsorption/desorption isotherms, morphology/size distribution, and magnetic hysteresis of synthesized Fe3O4/Zn-metal organic framework magnetic nanostructures were characterized by XRD patterns, TGA curve, BET adsorption/desorption technique, SEM image, and VSM curve, respectively. After confirming the Fe3O4/Zn-metal organic framework magnetic nanostructures, its antimicrobial properties against Gram-positive bacterial, Gram-negative bacterial, and fungal strains based on minimum inhibitory concentration (MIC), minimum bactericidal concentration (MBC), and minimum fungicidal concentration (MFC) values were studied. The MIC values in antimicrobial activity for Gram-positive and Gram-negative bacterial strains, between 16–128 μg/ml, and for fungal strain, 128 μg/ml were observed. The results showed that the high specific surface area of Fe3O4/Zn-metal organic framework magnetic nanostructures caused the antimicrobial power of nanoparticles to be high, and the observed antimicrobial effects were higher than some known commercial antimicrobial drugs. Another advantage of the specific surface area of Fe3O4/Zn-metal organic framework magnetic nanostructures was its high catalytic properties in the three-component reaction of isatin, malononitrile, and dimedone. New spiro [indoline-pyranopyrimidines] derivatives were synthesized with high efficiency. The catalytic activity results of Fe3O4/Zn-metal organic framework magnetic nanostructures showed that, in addition to recyclability, derivatives could be synthesized in less time than previously reported methods. The results of investigating the catalytic activity of Fe3O4/Zn-metal organic framework magnetic nanostructures showed that the spiro [indoline-pyranopyrimidines] derivatives were synthesized in the time range of 10–20 min with an efficiency of over 85%. As a final result, it can be concluded that the microwave synthesis method improves the unique properties of magnetic nanostructures, especially its specific surface area, and has increased its efficiency.

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A green, facile and recyclable Mn3O4/MWCNT nano-catalyst for the synthesis of quinolines via one-pot multicomponent reactions

Cited by 14 publications

References 36 publications

Environmentally Benign Approaches towards the Synthesis of Quinolines

Environmentally Benign Approaches towards the Synthesis of Quinolines

Recyclable catalysts for the synthesis of heterocyclic compounds using carbon materials

Application of novel Fe3O4/Zn-metal organic framework magnetic nanostructures as an antimicrobial agent and magnetic nanocatalyst in the synthesis of heterocyclic compounds

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