Efficient heterogeneous silver nanoparticles catalyzed one-pot synthesis of 5-substituted 1H-tetrazoles

Mani, Pavnesh; Sharma, Chiranjeev; Kumar, Santosh; Awasthi, Satish Kumar

doi:10.1016/j.molcata.2014.05.008

Cited by 44 publications

(29 citation statements)

References 31 publications

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“…As an important type of nitrogen-containing heterocyclic compounds, tetrazoles have gained wide attention due to its use in the field of material sciences and synthetic organic chemistry as well as pharmaceutical sciences. 90 In this field, Awasthi and coworkers 91 have ever established a synthetic method to substituted 1H-tetrazoles with the aid of silver nanoparticles. With the optimized reaction conditions with 20mol% of silver nanoparticles, the [3+2]cycloaddition of nitriles 79 with NaN 3 resulted in quite good yields for the corresponding products 80 (Scheme 33).…”

Section: Catalytic Cycloaddition and Cyclization To Complex Productsmentioning

confidence: 99%

Nanosilver as a new generation of silver catalysts in organic transformations for efficient synthesis of fine chemicals

Dong

Gao

Yang

et al. 2015

Catal. Sci. Technol.

305

147

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Among the metal-based nanoparticles, silver nanoparticles catalysis has been of great interest in organic synthesis and has expanded rapidly in the past ten years because of nanosilver catalysts' unique reactivity and selectivity, stability, as well as recyclability in catalytic reactions. As can be seen from the research results reported in this critical review, the application of heterogeneous silver-based nanoparticles to general organic reactions has proved to be an effective strategy in the development of highly efficient organic transformations in term of efficiency and selectivity. In particular, this review revealed the powerful potential of nanosilver catalysis in total synthesis of natural products and pharmaceutical molecules.

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Section: Catalytic Cycloaddition and Cyclization To Complex Productsmentioning

confidence: 99%

Nanosilver as a new generation of silver catalysts in organic transformations for efficient synthesis of fine chemicals

Dong

Gao

Yang

et al. 2015

Catal. Sci. Technol.

305

147

View full text Add to dashboard Cite

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“…The quest for use of green methods in synthesis we motivated to choose glycerol, a green solvent for the preparation of 5-(4-fluorophenyl)-1H-tetrazole in good yields. Herein, silver nanoparticles act as Lewis acid by activating nitrile group which enhances its electro philic character which later combines with sodium azide to produce tetrazoles [32]. The structure of newly synthesized tetrazole molecule was confirmed by 1 H NMR, mass spectral data and C,H,N analysis.…”

Section: Resultsmentioning

confidence: 92%

Plant Mediated Green Synthesis, Catalytic Activity and Antibacterial Assay of Silver Nanoparticles

et al. 2019

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Plant mediated green synthesis of silver nanoparticles (AgNPs) was carried out with the plant extract of Vitex negundo Linn., a simple method without using harmful chemicals. Herein, a root bark extract is used as reducing and capping agent for synthesizing AgNPs from silver nitrate solution. The characterization of AgNPs were obtained by UV-visible spectrophotometer, X-ray diffraction, Fourier transform infrared spectroscopy, scanning electron microscopy and energy dispersive spectroscopy. The results were confirmed the presence of silver nanoparticles with UV-visible absorption peak at around 433-443 nm and its crystalline nature by XRD analysis. The FTIR spectrum confirmed that the synthesized AgNPs are stabilized and protected by various functional groups of biomolecules in extract. The SEM morphology showed the triangular or spherical shape of AgNPs with the size in the range of 80-100 nm and EDS confirmed the presence of elemental silver in the sample. The catalytic activity of AgNPs was investigated in the synthesis of 5-substituted 1H-tetrazole. Furthermore, antibacterial profile showed that biopotent AgNPs exhibited moderate to good antibacterial activity.

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“…According to the previous reports, the plausible mechanism for the synthesis of 1 H ‐Tetrazoleis initial activation of nitrile groups by silver nanoparticles of h‐Fe 2 O 3 @SiO 2 /g‐C 3 N 4 /Ag which can serve as a Lewis acid and formation of intermediate I followed by reaction with sodium azide and formation of intermediate II and cyclization, Scheme .…”

Section: Resultsmentioning

confidence: 98%

Preparation of Ag‐doped g‐C₃N₄ Nano Sheet Decorated Magnetic γ‐Fe₂O₃@SiO₂ Core–Shell Hollow Spheres through a Novel Hydrothermal Procedure: Investigation of the Catalytic activity for A³, KA² Coupling Reactions and [3 + 2] Cycloaddition

Sadjadi

Malmir

Heravi

2018

Applied Organom Chemis

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Taking advantageous of both g‐C3N4 and magnetic core‐shell hollow spheres, for the first time a heterogeneous and magnetically separable hybrid system was prepared through a novel and simple hydrothermal procedure and used for immobilization of bio‐synthesized Ag(0) nanoparticles. The hybrid system was fully characterized by using SEM/EDS, FTIR, VSM, TEM, XRD, TGA, DTGA, ICP‐AES, BET and elemental mapping analysis. The catalytic utility of the obtained system, h‐Fe2O3@SiO2/g‐C3N4/Ag, for promoting ultrasonic‐assisted A3, KA2 coupling reactions and [3 + 2] cycloaddition has been confirmed. The results established that the catalyst could efficiently catalyze the reaction to afford the corresponding products in high yields in short reaction times. The reusability study confirmed that the catalyst could be recovered and reused for at least five reaction runs with only slight loss of the catalytic activity. The hot filtration test also proved low silver leaching, indicating the heterogeneous nature of the catalysis.

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Efficient heterogeneous silver nanoparticles catalyzed one-pot synthesis of 5-substituted 1H-tetrazoles

Cited by 44 publications

References 31 publications

Nanosilver as a new generation of silver catalysts in organic transformations for efficient synthesis of fine chemicals

Nanosilver as a new generation of silver catalysts in organic transformations for efficient synthesis of fine chemicals

Plant Mediated Green Synthesis, Catalytic Activity and Antibacterial Assay of Silver Nanoparticles

Preparation of Ag‐doped g‐C₃N₄ Nano Sheet Decorated Magnetic γ‐Fe₂O₃@SiO₂ Core–Shell Hollow Spheres through a Novel Hydrothermal Procedure: Investigation of the Catalytic activity for A³, KA² Coupling Reactions and [3 + 2] Cycloaddition

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Efficient heterogeneous silver nanoparticles catalyzed one-pot synthesis of 5-substituted 1H-tetrazoles

Cited by 44 publications

References 31 publications

Nanosilver as a new generation of silver catalysts in organic transformations for efficient synthesis of fine chemicals

Nanosilver as a new generation of silver catalysts in organic transformations for efficient synthesis of fine chemicals

Plant Mediated Green Synthesis, Catalytic Activity and Antibacterial Assay of Silver Nanoparticles

Preparation of Ag‐doped g‐C3N4 Nano Sheet Decorated Magnetic γ‐Fe2O3@SiO2 Core–Shell Hollow Spheres through a Novel Hydrothermal Procedure: Investigation of the Catalytic activity for A3, KA2 Coupling Reactions and [3 + 2] Cycloaddition

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Preparation of Ag‐doped g‐C₃N₄ Nano Sheet Decorated Magnetic γ‐Fe₂O₃@SiO₂ Core–Shell Hollow Spheres through a Novel Hydrothermal Procedure: Investigation of the Catalytic activity for A³, KA² Coupling Reactions and [3 + 2] Cycloaddition