Easy single-step preparation of ZnO nano-particles by sedimentation method and studying their catalytic performance in the synthesis of 2-aminothiophenes via Gewald reaction

Tayebee, Reza; Javadi, Farzad; Argi, Gholamreza

doi:10.1016/j.molcata.2012.11.011

Cited by 36 publications

(22 citation statements)

References 33 publications

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“…The progress of the reactions was shown by thin‐layer chromatography (TLC). All the synthesized 2‐aminothiophenes were distinguished by comparison of their physical and spectral information with those already announced …”

Section: Methodsmentioning

confidence: 99%

Preparation of magnetically recyclable ZnFe₂O₄ nanoparticles by easy single‐step co‐precipitation method and their catalytic performance in the synthesis of 2‐aminothiophenes

Erfaninia

Tayebee

Foletto

et al. 2017

Applied Organom Chemis

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In this work, a new synthetic route for the preparation of ZnFe2O4 nanoparticles through the chemical co‐precipitation using Fe2+ and Fe3+ ions in an alkaline solution was developed. The synthesized nanoparticles were characterized by XRD, FTIR, SEM, ICP‐MS, DRS, TGA, VSM and elemental analysis. Characterization results confirmed the formation of single ZnFe2O4 phase, with an average particle size of 40 nm and a high saturation magnetization of 34 emu g−1. The prepared material was employed as a catalyst for the synthesis of 2‐aminotiophene derivatives through the Gewald reaction. This thermally and chemically stable nanocatalyst is environmentally benign, economical and reusable which can be easily recovered using an external magnet. Therefore, it appears that this methodology can be simply extended for industrial purposes.

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Section: Methodsmentioning

confidence: 99%

Preparation of magnetically recyclable ZnFe₂O₄ nanoparticles by easy single‐step co‐precipitation method and their catalytic performance in the synthesis of 2‐aminothiophenes

Erfaninia

Tayebee

Foletto

et al. 2017

Applied Organom Chemis

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“…In the category of heterogeneous solid base catalysis, catalyst may function as a base toward reactants which ordinarily behave as acids either by abstraction of a proton from the reactants (Boensted base) or by donation of an electron pair to the reagents (Lewis base) to form anionic intermediates which undergo catalytic cycle . Recently, we examined the catalytic efficacy of ZnO, ZnO/nanoclinoptilolite and ZnFe 2 O 4 in the preparation of substituted 2‐aminothiophenes …”

Section: Introductionmentioning

confidence: 99%

Ethylene diamine grafted nanoporous UiO‐66 as an efficient basic catalyst in the multi‐component synthesis of 2‐aminithiophenes

Erfaninia

Tayebee

Dušek

et al. 2018

Applied Organom Chemis

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This study demonstrates ED-UiO-66 as a novel and effective solid nanoporous basic catalyst prepared through the amine grafting onto the pores of UiO-66. The manufactured nanoparticles were identified by FT-IR, XRD, TGA, FESEM, TEM, CHN and BET and the characterization results certified formation of a single phase nanoporous substance with the medium grain size less than 90 nm. The synthesized material was employed as an efficient catalyst for the preparation of 2-aminotiophenes through the Gewald method. This thermochemically stable nanocatalyst was environmentally safe, reusable and economic. Therefore, this methodology can be simply extended for industrial goals.

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“…To show the merits of the present work, we compared the as-obtained results using K 2 CO 3 with those previously reported in the literature. [35][36][37][38][39][40] It was found that our method can achieve the target product in 95% yield in 15 min of reaction. Compared to the results in the literature, [35][36][37][38][39][40] our method has a shorter reaction time and high yield.…”

Section: Synthesismentioning

confidence: 99%

A Microwave-Enhanced Synthesis and Biological Evaluation of N-Aryl‑5,6,7,8‑tetrahydrobenzo[4,5]thieno[2,3-d]pyrimidin-4-amines

Han¹,

Yin²,

Sui³

et al. 2019

J. Braz. Chem. Soc.

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A series of N-aryl-5,6,7,8-tetra-hydrobenzo[4,5]thieno[2,3-d]pyrimidin-4-amines were synthesized in moderate to good yield by using a microwave-enhanced conditions. The selected compounds were evaluated for their cytotoxic effects (IC 50 values) on human pulmonary carcinoma (A549), murine BALB/c spontaneous colon adenocarcinoma (CT26) and human hepatocellular liver carcinoma (HepG2) cell lines in vitro. Amongst these compounds, one compound was found to have the better cytotoxic activity with reference to the standard Erlotinib hydrochloride (Tarceva TM) against A549 (IC 50 = 16.06 ± 0.09 μM) and HepG2 (IC 50 = 15.01 ± 0.31 μM) cell lines. Especially, two compounds showed best cytotoxic effects against CT26 (IC 50 = 11.38 ± 0.44 μM) and HepG2 (IC 50 = 8.51 ± 0.52 μM) cell lines, respectively. The preliminary structure-activity relationships were disclosed and the thieno[2,3-d]pyrimidine skeleton could be exploited to potential antitumor agents in the future.

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Easy single-step preparation of ZnO nano-particles by sedimentation method and studying their catalytic performance in the synthesis of 2-aminothiophenes via Gewald reaction

Cited by 36 publications

References 33 publications

Preparation of magnetically recyclable ZnFe₂O₄ nanoparticles by easy single‐step co‐precipitation method and their catalytic performance in the synthesis of 2‐aminothiophenes

Preparation of magnetically recyclable ZnFe₂O₄ nanoparticles by easy single‐step co‐precipitation method and their catalytic performance in the synthesis of 2‐aminothiophenes

Ethylene diamine grafted nanoporous UiO‐66 as an efficient basic catalyst in the multi‐component synthesis of 2‐aminithiophenes

A Microwave-Enhanced Synthesis and Biological Evaluation of N-Aryl‑5,6,7,8‑tetrahydrobenzo[4,5]thieno[2,3-d]pyrimidin-4-amines

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Easy single-step preparation of ZnO nano-particles by sedimentation method and studying their catalytic performance in the synthesis of 2-aminothiophenes via Gewald reaction

Cited by 36 publications

References 33 publications

Preparation of magnetically recyclable ZnFe2O4 nanoparticles by easy single‐step co‐precipitation method and their catalytic performance in the synthesis of 2‐aminothiophenes

Preparation of magnetically recyclable ZnFe2O4 nanoparticles by easy single‐step co‐precipitation method and their catalytic performance in the synthesis of 2‐aminothiophenes

Ethylene diamine grafted nanoporous UiO‐66 as an efficient basic catalyst in the multi‐component synthesis of 2‐aminithiophenes

A Microwave-Enhanced Synthesis and Biological Evaluation of N-Aryl‑5,6,7,8‑tetrahydrobenzo[4,5]thieno[2,3-d]pyrimidin-4-amines

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Preparation of magnetically recyclable ZnFe₂O₄ nanoparticles by easy single‐step co‐precipitation method and their catalytic performance in the synthesis of 2‐aminothiophenes

Preparation of magnetically recyclable ZnFe₂O₄ nanoparticles by easy single‐step co‐precipitation method and their catalytic performance in the synthesis of 2‐aminothiophenes