Synthesis and characterization of mesoporous silica green catalyst, functionalized with nicotinic acid and its use for synthesis of pyran heterocyclic compounds

Davarpanah, Jamal; Elahi, Seyed Mohammad; Rezaee, Parizad

doi:10.1007/s10934-017-0429-7

Cited by 15 publications

(4 citation statements)

References 29 publications

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“…30 For samples containing nicotinic acid, the peaks in the 1590−1660 cm −1 region refer to the characteristic CC and CN stretching vibrations of the pyridine ring. 31 The TEM analysis shows (Figure 3) that the nicotinic acid immobilized on SBA-15 (NA-SBA-15) has a hexagonal symmetry and well-ordered structure with parallel channels like the initial support SBA-15. According to the TEM analysis, the phosphomolybdic acid modification also does not affect the initial SBA-15 structure, and no changes in the structure occur.…”

Section: Resultsmentioning

confidence: 99%

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Immobilized Multifunctional Ionic Liquids for Highly Efficient Oxidation of Sulfur-Containing Compounds in Model Fuels

et al. 2021

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Oxidative desulfurization is a promising method to produce clean fuels with an ultralow sulfur content at mild conditions. Herein, for the first time, we present multifunctional ionic liquid catalysts immobilized on mesoporous SBA-15 for highly efficient oxidation of dibenzothiophene. A combination of two active catalytic sites (phosphomolybdic acid fragment and carboxylic group) allows us to achieve complete oxidation of the most intractable dibenzothiophene to the corresponding sulfone in 5 min at 80 °C and H 2 O 2 /S = 6:1 molar ratio. The support and catalyst structures were investigated by low-temperature nitrogen adsorption/ desorption, Fourier transform infrared spectroscopy, X-ray fluorescence analysis, CHN analysis, and transmission electron microscopy techniques. Nicotinic acid fragments, bonded with the support and phosphomolybdic acid anion via covalent and ionic bonds, respectively, prevent active site leaching, thus retaining the catalyst activity for at least 10 reaction runs with preliminary regeneration. These catalysts are considered as promising systems for clean fuel production.

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Section: Resultsmentioning

confidence: 99%

“…The band at 908 cm –1 was supposed to be related to the Mo–O–Mo vibrations of HPMo . For samples containing nicotinic acid, the peaks in the 1590–1660 cm –1 region refer to the characteristic CC and CN stretching vibrations of the pyridine ring …”

Section: Results and Discussionmentioning

confidence: 99%

Immobilized Multifunctional Ionic Liquids for Highly Efficient Oxidation of Sulfur-Containing Compounds in Model Fuels

et al. 2021

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“…(3) In chemical polishing of steel under high-temperature conditions; (4) For the recovery of silver from the melting of slag [23,24]; (5) As a chemical imaging toner based on organic silver salts [25,26]; (6) As a fungicide [25,26]; (7) As an organic catalyst, including in the Hantzch reaction for the synthesis of 1,4dihydropyridine and polyhydroquinoline derivatives [27], quinazoline [28], and 1,2,4-selenadiazoles and thiazoles under aerobic conditions [29]; (8) In the preparation of heterogenized silica-based catalysts (SBA-NA) [30] or the magnetically modified F 3 O 4 @ NA catalyst [31]; (9) As a chelating agent in the production of VIB and VIII metal catalysts for hy-drocracking [32].…”

Section: Introductionmentioning

confidence: 99%

Methods to Produce Nicotinic Acid with Potential Industrial Applications

2022

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Nicotinic acid is a naturally occurring pyridine carboxylic acid, contained in vitamin PP, an essential nutrient for humans and animals, and used as an antipelagic agent. Nicotinic acid can be made from tryptophan by plants and animals but is usually not completely bioavailable. Industrially, nicotinic acid is produced mainly by oxidation of 5-ethyl-2-methylpyridine with nitric acid. One of the by-products of the process is nitrous oxide, a gas that is difficult to recycle and manage, with a greenhouse effect 300 times stronger than CO2. A new technology for the industrial production of nicotinic acid is undoubtedly necessary to meet the needs of green chemistry and not burden the environment. We carried out a literature review on ecological methods to produce nicotinic acid from commercially available raw materials such as 3-methylpyridine and 5-ethyl-2-methylpyridine, especially focusing on those methods with potential industrial applications.

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“…Having the above points in mind, as part of our continuing efforts to develop high performance and environmentally friendly procedures for various important reactions and transformations [15][16][17][18][19][20] and our new interest in the application of the 3D-network porous polymer based on calix [4]resorcinarene for the preparation of biologically important molecules [21][22][23], herein, we propose, for the rst time, the functionalization of polymeric calix [4]resorcinarene via covalently anchored ionic liquid under thermal solvent-free conditions and the investigation of its e ciency as phase transfer catalyst for the synthesis of azidohydrins derivatives through the ring opening of various epoxide.…”

Section: Introductionmentioning

confidence: 99%

A new platform for the post-functionalization of porous polymer based on calix[4]resorcinarene under thermal solvent-free conditions; as a highly efficient and recyclable PTC containing nanocavity

Elahi

Khodadoost²,

Shahidizadeh³

2022

Preprint

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In this work, for the first time, functionalized 3D-network polymer was synthesized through thermal solvent-free method. The synthetic steps include (1) the preparation of ionic liquid (1-methyl-3-(trimethoxysilylpropyl) imidazolium choloride) [pmim]Cl, (2) synthesis of the 3D-network polymer based on calix[4]resorcinarene, and finally (3) immobilization of ionic liquid on the synthesize polymer through one-pot solvent-free conditions. The formation of this cationic porous polymer was confirmed by elemental analysis, scanning electron microscopy (SEM), thermal gravimetric analysis (TGA) and derivative thermogravimetric (DTG). Taken together, the results reveal the successful preparation of the efficient and wondrous mesoporous cationic polymer with the simultaneously merged properties of ionic liquid and polymeric matrix on the basis of calix[4]resorcinarene. Therefore, it provides an efficient heterogeneous catalyst for being applied in the catalytic reaction for achieving synthetic goals. One-pot conditions, thermal solvent-free pathway, easy reaction handling and work up, green and affordable methodology, gaining high yields of product are the most important advantages of the present method for the synthesis of this polymeric heterogeneous catalyst. The hydrophobic central cavity and hydrophilic cationic arms render it a suitable heterogeneous phase transfer catalyst for the preparation of valuable azidohydrins in water. The recovered catalyst could be used for several times without any significant loss of activity. The unique features of this catalyst such as superior thermal stability, excellent catalytic activity in terms of yield and reaction time, will be potentially important for its applications in industry.

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Synthesis and characterization of mesoporous silica green catalyst, functionalized with nicotinic acid and its use for synthesis of pyran heterocyclic compounds

Cited by 15 publications

References 29 publications

Immobilized Multifunctional Ionic Liquids for Highly Efficient Oxidation of Sulfur-Containing Compounds in Model Fuels

Immobilized Multifunctional Ionic Liquids for Highly Efficient Oxidation of Sulfur-Containing Compounds in Model Fuels

Methods to Produce Nicotinic Acid with Potential Industrial Applications

A new platform for the post-functionalization of porous polymer based on calix[4]resorcinarene under thermal solvent-free conditions; as a highly efficient and recyclable PTC containing nanocavity

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