Nicotinic acid functionalized organomodified silica as an efficient heterogeneous catalyst for the synthesis of benzoyl fumarate

Singh, Rana Sanjay Kumar; Kashyap, Bishwapran; Phukan, Prodeep

doi:10.1016/j.tetlet.2013.09.057

Cited by 7 publications

(5 citation statements)

References 21 publications

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“…There are several applications for silica gel and it becomes more diversified when it is functionalized with organic and inorganic groups, for different purposes such as: stationary phase in gas chromatography , sensors , adsorption , ion exchange , pre‐concentration of metal ions , catalysis , among others.…”

Section: Introductionmentioning

confidence: 99%

Silica Gel Functionalized with 4‐Amino‐5‐(4pyridyl)‐4H‐1,2,4‐triazole‐3‐thiol and their Use as a Copper Sorbent and Electromediator for Voltammetric Detection of Ascorbic Acid

et al. 2018

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In this work, the 3‐chloropropyl silica gel (SG) was prepared and organofunctionalized with 4‐amino‐5‐(4pyridyl)‐4H‐1,2,4‐triazole‐3‐thiol (SGA), that was characterized by infrared spectroscopy (FTIR) and cyclic voltammetry (CV). The cupric ions (Cu2+) sorption on the silica functionalized surface (CuSGA) were performed in aqueous solution, at room temperature. It was performed a systematic study about voltammetric behavior of CuSGA, where the cyclic voltammogram of graphite paste electrode modified with CuSGA exhibited a single redox pair with formal potential (Eθ′)=0.30 V assigned to the process Cu+/Cu2+, (KCl 1.0 mol L−1, v=20 mV s−1). The graphite paste electrode modified with CuSGA was sensitive to different concentrations of ascorbic acid and then an analytical curve could be constructed, with a linear response of 6.0×10−6 to 9.0×10−5 mol L−1 (R=0.9988) and a relative standard deviation of ±2.5 % (n=3). The detection limit (3σ) and amperometric sensitivity were 4.78×10−6 mol L−1 and 115.96 mA/mol L−1, respectively.

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Section: Introductionmentioning

confidence: 99%

Silica Gel Functionalized with 4‐Amino‐5‐(4pyridyl)‐4H‐1,2,4‐triazole‐3‐thiol and their Use as a Copper Sorbent and Electromediator for Voltammetric Detection of Ascorbic Acid

et al. 2018

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“…Pore functionalization is achieved through the co‐condensation reaction occurring between the organotrialkoxysilane and the silica source in the presence of a structure‐directing agent . The direct synthesis method is considered more predictable and hence valuable, because it can avoid several shortcomings of the post‐grafting method, such as reduction in pore size, pore blocking at the aperture and difficulties in controlling the loadings as well as the distribution of active sites . An important feature of these catalysts is their simple separation using an external magnet without filtration.…”

Section: Introductionmentioning

confidence: 99%

“…[6] The direct synthesis method is considered more predictable and hence valuable, because it can avoid several shortcomings of the post-grafting method, such as reduction in pore size, pore blocking at the aperture and difficulties in controlling the loadings as well as the distribution of active sites. [7] An important feature of these catalysts is their simple separation using an external magnet without filtration. Furthermore, functionalized Fe 3 O 4 @SiO 2 catalysts show not only high catalytic activity but also a high degree of chemical stability in various organic solvents.…”

Section: Introductionmentioning

confidence: 99%

Design, preparation and characterization of Cu/GA/Fe₃O₄@SiO₂ nanoparticles as a catalyst for the synthesis of benzodiazepines and imidazoles

Shaabani

Sepahvand

Hooshmand

et al. 2016

Applied Organom Chemis

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The synthesis and characterization of an efficient and reusable nanocatalyst, Cu/GA/Fe3O4@SiO2, obtained by ultrasonic‐assisted grafting of guanidineacetic acid on modified Fe3O4@SiO2 core–shell nanocomposite spheres and subsequent immobilization of Cu(II), are described. The catalyst was characterized by means of X‐ray diffraction, scanning and transmission electron microscopies, energy‐dispersive X‐ray spectroscopy, elemental analysis, thermogravimetric analysis, Fourier transform infrared spectroscopy, vibrating sample magnetometry and inductively coupled plasma optical emission spectrometry. The prepared nanocatalyst facilitated an efficient and straightforward friendly procedure for the synthesis of benzodiazepines and imidazoles in ethanol and under solvent‐free conditions, respectively. The nanocatalyst can be easily recovered using a magnet and reused several times without any significant loss of activity. Copyright © 2016 John Wiley & Sons, Ltd.

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“…We have recently reported a homogeneous reusable catalyst for the synthesis of benzoyl fumarates [15]. Subsequently, we made an improvement of the method by developing a nicotinic acid-based heterogeneous catalyst [16]. Although we are successful in synthesizing new reusable catalysts, these catalysts have to be made via multistep procedure.…”

Section: Introductionmentioning

confidence: 99%

Poly(4-vinylpyridine-co-ethylvinylbenzene) as heterogeneous reusable catalyst for the synthesis of benzoyl fumarate

Kashyap

Phukan

2015

Monatsh Chem

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Poly(4-vinylpyridine-co-ethylvinylbenzene) 25 % cross-linked (with divinylbenzene) has been found to be an effective heterogeneous catalyst for the synthesis of benzoyl fumarate from aldehyde and dimethyl acetylenedicarboxylate. Various aromatic aldehydes undergo this reaction with good yield in presence of 15 wt% of the catalyst. The catalyst was recovered and reused six times without appreciable alteration in activity. Graphical abstract

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Nicotinic acid functionalized organomodified silica as an efficient heterogeneous catalyst for the synthesis of benzoyl fumarate

Cited by 7 publications

References 21 publications

Silica Gel Functionalized with 4‐Amino‐5‐(4pyridyl)‐4H‐1,2,4‐triazole‐3‐thiol and their Use as a Copper Sorbent and Electromediator for Voltammetric Detection of Ascorbic Acid

Silica Gel Functionalized with 4‐Amino‐5‐(4pyridyl)‐4H‐1,2,4‐triazole‐3‐thiol and their Use as a Copper Sorbent and Electromediator for Voltammetric Detection of Ascorbic Acid

Design, preparation and characterization of Cu/GA/Fe₃O₄@SiO₂ nanoparticles as a catalyst for the synthesis of benzodiazepines and imidazoles

Poly(4-vinylpyridine-co-ethylvinylbenzene) as heterogeneous reusable catalyst for the synthesis of benzoyl fumarate

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Nicotinic acid functionalized organomodified silica as an efficient heterogeneous catalyst for the synthesis of benzoyl fumarate

Cited by 7 publications

References 21 publications

Silica Gel Functionalized with 4‐Amino‐5‐(4pyridyl)‐4H‐1,2,4‐triazole‐3‐thiol and their Use as a Copper Sorbent and Electromediator for Voltammetric Detection of Ascorbic Acid

Silica Gel Functionalized with 4‐Amino‐5‐(4pyridyl)‐4H‐1,2,4‐triazole‐3‐thiol and their Use as a Copper Sorbent and Electromediator for Voltammetric Detection of Ascorbic Acid

Design, preparation and characterization of Cu/GA/Fe3O4@SiO2 nanoparticles as a catalyst for the synthesis of benzodiazepines and imidazoles

Poly(4-vinylpyridine-co-ethylvinylbenzene) as heterogeneous reusable catalyst for the synthesis of benzoyl fumarate

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Design, preparation and characterization of Cu/GA/Fe₃O₄@SiO₂ nanoparticles as a catalyst for the synthesis of benzodiazepines and imidazoles