Zeolite anchored Zr-ZSM-5 as an eco-friendly, green, and reusable catalyst in Hantzsch synthesis of dihydropyridine derivatives

Kusampally, Uppalaiah; Naresh, Dhachapally; Kola, Ramesh; Kamatala, Chinna Rajanna

doi:10.1016/j.matchemphys.2019.122497

Cited by 18 publications

(9 citation statements)

References 39 publications

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“…Kusampally et al (Kusampally et al, 2020) studied diverse reaction conditions to synthesise 1.4-dihydropyridines (62 and 63) using zeolite-anchored Zr-ZSM-5 as an illustrious catalyst. To tailor the material, ammonium ZSM-5 was initially calcinated using a muffled furnace set to 500 °C under aerobic conditions subjected to a heating ramp rate of 5 °C per minute for 4 h to acquire H-ZSM-5.…”

Section: Silica-based Catalystsmentioning

confidence: 99%

Recent Progresses in the Multicomponent Synthesis of Dihydropyridines by Applying Sustainable Catalysts Under Green Conditions

et al. 2021

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The synthesis of dihydropyridines, valuable molecules with diverse therapeutic properties, using eco-friendly heterogeneous catalysts as a green alternative received significant consideration. By selecting appropriate precursors, these compounds can be readily modified to induce the desired properties in the target product. This review focused on synthesising diverse dihydropyridine derivatives in single-pot reactions using magnetic, silica, and zirconium-based heterogeneous catalytic systems. The monograph describes preparation techniques for various catalyst materials in detail. It covers facile and benign magnetic, silica, zirconium-based, and ionic liquid catalysts, exhibiting significant efficacy and consistently facilitating excellent yields in short reaction times and in a cost-effective way. Most of the designated protocols employ Hantzsch reactions involving substituted aldehydes, active methylene compounds, and ammonium acetate. These reactions presumably follow Knoevenagel condensation followed by Michael addition and intra-molecular cyclisation. The multicomponent one-pot protocols using green catalysts and solvents have admirably increased the product selectivity and yields while minimising the reaction time. These sustainable catalyst materials retain their viability for several cycles reducing the expenditure are eco-friendly.

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Section: Silica-based Catalystsmentioning

confidence: 99%

Recent Progresses in the Multicomponent Synthesis of Dihydropyridines by Applying Sustainable Catalysts Under Green Conditions

et al. 2021

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“…Hence, multicomponent reactions (MCRs) are considered as a useful method for the synthesis of heterocyclic organic molecules. Significant advantages of MCRs are the elimination of intermediates, short reaction times, high reaction yield, and easy separation of products 9 – 12 . Compounds such as 1,4-dihydropyridine, tetrahydro-4 H -chromenes, and dihydroquinazolines, which have high medicinal activity, are synthesized by MCRs.…”

Section: Introductionmentioning

confidence: 99%

Preparation and characterization of graphitic carbon nitride-supported l-arginine as a highly efficient and recyclable catalyst for the one-pot synthesis of condensation reactions

Ghafuri

Tajik

Ghanbari

et al. 2021

Sci Rep

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In this work, graphitic carbon nitride-supported l-arginine (g-C3N4@l-arginine) nanocatalyst was synthesized and evaluated using FT-IR, EDX, XRD, TGA, and FESEM analyses. The performance of the prepared nanocatalyst was examined in the synthesis of 1,4-dihydropyridine, 4H-chromene, and 2,3-dihydro quinazoline derivatives. The novel g-C3N4@l-arginine nanocatalyst showed high thermal stability, easy separation from reaction media, the capability to be used in various multicomponent reactions, and acceptable reusability.

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“…A signi cant advantage of multicomponent reactions is the elimination of intermediates. Also, short reaction times, high yield, and easy separation of products make such reactions more crucial [9][10][11][12] .…”

Section: Introductionmentioning

confidence: 99%

Preparation And Characterization Of g-C3N4 @ L-Arginine As A Highly - Efficient And Recyclable Catalyst For The Synthesis of 1, 4-Dihydropyridine, 4H-Chromene, And 2, 3-Dihydro Quinazoline Derivatives

Tajik¹,

Ghafuri²,

Ghanbari³

et al. 2021

Preprint

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In this work, the nanocatalyst of g-C3N4@L-arginine was prepared that synthesis of it in comparison with the synthesis of other catalysts was convenient; initially, this prepared nanocatalyst was evaluated and verified by FT-IR, EDX, XRD, TGA, and FESEM analysis, and in the next step, the performance of nanocatalyst in the synthesis of 1, 4-dihydropyridine, 4H-chromene, and 2, 3-dihydro quinazoline derivatives were examined with high yield. Properties such as high thermal stability, easy separation of reaction media, use in various multicomponent reactions, and reusability have caused that this novel nanocatalyst was changed into a unique catalyst in its own age.

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Zeolite anchored Zr-ZSM-5 as an eco-friendly, green, and reusable catalyst in Hantzsch synthesis of dihydropyridine derivatives

Cited by 18 publications

References 39 publications

Recent Progresses in the Multicomponent Synthesis of Dihydropyridines by Applying Sustainable Catalysts Under Green Conditions

Recent Progresses in the Multicomponent Synthesis of Dihydropyridines by Applying Sustainable Catalysts Under Green Conditions

Preparation and characterization of graphitic carbon nitride-supported l-arginine as a highly efficient and recyclable catalyst for the one-pot synthesis of condensation reactions

Preparation And Characterization Of g-C3N4 @ L-Arginine As A Highly - Efficient And Recyclable Catalyst For The Synthesis of 1, 4-Dihydropyridine, 4H-Chromene, And 2, 3-Dihydro Quinazoline Derivatives

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