Cesium carbonate supported on hydroxyapatite coated Ni0.5Zn0.5Fe2O4 magnetic nanoparticles as an efficient and green catalyst for the synthesis of pyrano[2,3-c]pyrazoles

Moeinpour, Farid; Khojastehnezhad, Amir

doi:10.1016/j.cclet.2015.01.033

Cited by 38 publications

(12 citation statements)

References 24 publications

(29 reference statements)

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“…In FT-IR spectra, there are two typical peaks at 555 and 1440 cm −1 are correlated with Fe-O vibrations [29]. The bands approximately 971 and 1116 cm −1 are due to stretching mode of phosphate (P-O, PO 3− 4 ) [30]. They are the main attributes of HAP bands.…”

Section: Characterization Of Nife 2 O 4 /Hap/gqdsmentioning

confidence: 97%

Adsorptive removal of cadmium from aqueous solutions using NiFe2O4/hydroxyapatite/graphene quantum dots as a novel nano-adsorbent

2018

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In this study, NiFe 2 O 4 /hydroxyapatite/graphene quantum dots (NiFe 2 O 4 /HAP/GQDs) as nano-adsorbent to remove cadmium (Cd 2+) from aqueous solution were synthesized. This nano-adsorbent was depicted by some techniques such as X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and Fourier transform infrared spectroscopy (FT-IR). Adsorption studies were conducted to investigate the effect of contact time, pH, adsorbent dosage and initial cadmium ion concentration on removal efficiency. To determine the most fitting kinetic model, the suitability of pseudo-first-order and pseudo-second-order models was compared. The adsorption isotherm was described well by the Langmuir isotherm and maximum equilibrium uptake capacity (q e) was 344.83 mg g −1. Studies revealed that adsorption process is not a physical process and formation of complexes (bidentate and monodentate complexes) between-COO − and-OH functional groups on the surface of NiFe 2 O 4 /HAP/GQDs and Cd 2+ ions may occur. In addition, the adsorbent can simply be removed by an ordinary filtration process.

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Section: Characterization Of Nife 2 O 4 /Hap/gqdsmentioning

confidence: 97%

Adsorptive removal of cadmium from aqueous solutions using NiFe2O4/hydroxyapatite/graphene quantum dots as a novel nano-adsorbent

2018

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“…Magnetic nanoparticles (MNPs) have reported as attractive solid supports for immobilization of homogeneous catalysts. Cesium carbonate supported on hydroxyapatite coated Ni 0.5 Zn 0.5 Fe 2 O 4 magnetic nanoparticles (Ni 0.5 Zn 0.5 Fe 2 O 4 @Hap-Cs 2 CO 3 ) was utilized as magnetically separable, green and recyclable heterogeneous catalyst for the synthesis of pyranopyrazole derivatives 136 (Scheme 99). The reactions were carried out at room temperature in 50:50 water/ethanol.…”

Section: Using Nanocatalystmentioning

confidence: 99%

A Review on the Recent Multicomponent Synthesis of Pyranopyrazoles

Mamaghani

Nia

2019

Polycyclic Aromatic Compounds

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Due to biological and medicinal properties of pyranopyrazoles, synthesis of these bioactive heterocycles has attracted the interest of medicinal and organic chemists. This review focuses on the recent developments in multicomponent synthesis of pyranopyrazole and spiroconjugated pyranopyrazole systems. The present review describes the literature reports for the period 2005 to 2018. These reported approaches were performed in the classical and nonclassical conditions, particularly recent reports includes protocols under a green condition such as using catalyst, green solvents, and solvent-free conditions. ARTICLE HISTORY

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“…One area that has been intensely studied is their anticancer activity [8]. In order to find better antitumor agents, a large number of pyrazole derivatives were synthesized and examined over the past several years [9][10][11][12][13][14][15]. So the use of this pharmacophore is still very powerful [16,17].…”

Section: Introductionmentioning

confidence: 99%

An environmental friendly approach for the catalyst-free synthesis of highly substituted pyrazoles promoted by ultrasonic radiation

Nemati

Nikkhah

2015

Chinese Chemical Letters

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Cesium carbonate supported on hydroxyapatite coated Ni0.5Zn0.5Fe2O4 magnetic nanoparticles as an efficient and green catalyst for the synthesis of pyrano[2,3-c]pyrazoles

Cited by 38 publications

References 24 publications

Adsorptive removal of cadmium from aqueous solutions using NiFe2O4/hydroxyapatite/graphene quantum dots as a novel nano-adsorbent

Adsorptive removal of cadmium from aqueous solutions using NiFe2O4/hydroxyapatite/graphene quantum dots as a novel nano-adsorbent

A Review on the Recent Multicomponent Synthesis of Pyranopyrazoles

An environmental friendly approach for the catalyst-free synthesis of highly substituted pyrazoles promoted by ultrasonic radiation

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