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

Citation: Farid Moeinpour, Amir Khojastehnezhad. Cesium carbonate supported on hydroxyapatite coated Ni_0.5Zn_0.5Fe₂O₄ magnetic nanoparticles as an effi cient and green catalyst for the synthesis of pyrano[2,3-c]pyrazoles[J]. Chinese Chemical Letters, 2015, 26(5): 575-579. doi: 10.1016/j.cclet.2015.01.033 shu

Cesium carbonate supported on hydroxyapatite coated Ni_0.5Zn_0.5Fe₂O₄ magnetic nanoparticles as an effi cient and green catalyst for the synthesis of pyrano[2,3-c]pyrazoles

Farid Moeinpour ^{a,
,} ,
Amir Khojastehnezhad ^b,

通讯作者: Farid Moeinpour,

摘要: Cesium carbonate supported on hydroxyapatite coated Ni_0.5Zn_0.5Fe₂O₄ magnetic nanoparticles (Ni_0.5Zn_0.5Fe₂O₄@Hap-Cs₂CO₃) was found to be magnetically separable, highly efficient, green and recyclable heterogeneous catalyst. The synthesized nanocatalyst has been characterized with several methods (FT-IR, SEM, TEM, XRD and XRF) and these analyzes confirmed which the cesium carbonate is well supported to catalyst surface. After full characterization, its catalytic activity was investigated in the synthesis of pyranopyrazole derivatives and the reactions were carried out at room temperature in 50:50 water/ethanol with excellent yields (88-95%). More importantly, the Ni_0.5Zn_0.5Fe₂O₄@Hap-Cs₂CO₃ was easily separated from the reaction mixture by external magnetic field and efficiently reused at least six runs without any loss of its catalytic activity. Thus, the developed nanomagnetic base catalyst is potentially useful for the green and economic production of organic compounds.

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English

Cesium carbonate supported on hydroxyapatite coated Ni_0.5Zn_0.5Fe₂O₄ magnetic nanoparticles as an effi cient and green catalyst for the synthesis of pyrano[2,3-c]pyrazoles

Farid Moeinpour ^{a,
,} ,
Amir Khojastehnezhad ^b,

1.
a Department of Chemistry, Bandar Abbas Branch, Islamic Azad University, Bandar Abbas 7915893144, Iran;
2.
b Young Researchers and Elite Club, Mashhad Branch, Islamic Azad University, Mashhad, Iran

Corresponding author: Farid Moeinpour,

Received Date: 06 November 2014
Available Online: 07 February 2015

Abstract: Cesium carbonate supported on hydroxyapatite coated Ni_0.5Zn_0.5Fe₂O₄ magnetic nanoparticles (Ni_0.5Zn_0.5Fe₂O₄@Hap-Cs₂CO₃) was found to be magnetically separable, highly efficient, green and recyclable heterogeneous catalyst. The synthesized nanocatalyst has been characterized with several methods (FT-IR, SEM, TEM, XRD and XRF) and these analyzes confirmed which the cesium carbonate is well supported to catalyst surface. After full characterization, its catalytic activity was investigated in the synthesis of pyranopyrazole derivatives and the reactions were carried out at room temperature in 50:50 water/ethanol with excellent yields (88-95%). More importantly, the Ni_0.5Zn_0.5Fe₂O₄@Hap-Cs₂CO₃ was easily separated from the reaction mixture by external magnetic field and efficiently reused at least six runs without any loss of its catalytic activity. Thus, the developed nanomagnetic base catalyst is potentially useful for the green and economic production of organic compounds.

Key words:

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Cesium carbonate supported on hydroxyapatite coated Ni_0.5Zn_0.5Fe₂O₄ magnetic nanoparticles as an effi cient and green catalyst for the synthesis of pyrano[2,3-c]pyrazoles

通讯作者: Farid Moeinpour,

English

Cesium carbonate supported on hydroxyapatite coated Ni_0.5Zn_0.5Fe₂O₄ magnetic nanoparticles as an effi cient and green catalyst for the synthesis of pyrano[2,3-c]pyrazoles

Corresponding author: Farid Moeinpour,

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