Palladium covalently anchored imidazolium functionalized SBA-15: An efficient recoverable heterogeneous catalyst for the hydrocarboxylation of styrene

Tao, Yong; Ma, Mengchuan; Li, Weiping; Zhou, Li; Li, Lu; Guo, Zhenmei; Zhang, Chao; Lv, Zhiguo

doi:10.1016/j.jssc.2023.124471

Cited by 3 publications

(1 citation statement)

References 43 publications

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“…The sample of SBA-15 exhibited only a broad peak at 2θ = 22.9° as the (100) reflection, which is a characteristic signal of the amorphous nature of silica 36 . The other two weak diffraction peaks (210) and (110) are not clear, suggesting that the ordered channels of SBA-15 were not prominent 37 . Similar results were obtained for SBA-15@Schiff‐base@Fe(III).…”

Section: Methodsmentioning

confidence: 99%

Synthesis of 3,4-dihydropyrimidines and octahydroquinazolinones by SBA-15 supported schiff-base iron (III) complex as durable and reusable catalyst under ultrasound irradiation

Balali,

Safaei-Ghomi,

Mashhadi

2024

Sci Rep

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Biginelli-type heterocyclic compounds are particularly important due to their several chemical reactivities and various range of pharmacological activity. Therefore Biginelli reaction has witnessed several modification and numerous investigations are continuing in this field to develop more effective and efficient methodologies. In this research, Iron (III) schiff base immobilized SBA-15 has been prepared as a valuable, efficient, and recoverable catalyst for the Biginelli reaction. The morphology of the prepared catalyst was identified by spectroscopic characterization techniques and structural microscopic analysis including Fourier transform infrared (FT-IR) patterns, X-ray diffraction (XRD) by powder crystal method, Energy-dispersive X-ray spectroscopy (EDS) study, Thermogravimetric-Differential thermal analysis (TGA-DTA), Transmission electron microscopy (TEM) and Field emission scanning electron microscopy (FE-SEM) images. Biginelli compounds containing 3,4-dihydropyrimidines and octahydroquinazolinones were conveniently synthesized by this catalyzed protocol from the cycloaddition of aromatic aldehydes with the 1,3-dicarbonyl substrates and urea via ultrasonic waves. The several advantages of the presented approach are high yields and easy isolation of products, shorter reaction times, and milder conditions, structural stability and reusable catalyst. The combination of heterogeneous catalyst and ultrasonic radiation can make catalytic reactions more efficient than traditional ways attractive for academic researchers and application scholars in the industry.

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Section: Methodsmentioning

confidence: 99%

Synthesis of 3,4-dihydropyrimidines and octahydroquinazolinones by SBA-15 supported schiff-base iron (III) complex as durable and reusable catalyst under ultrasound irradiation

Balali,

Safaei-Ghomi,

Mashhadi

2024

Sci Rep

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PdCl2-FeCl3-imidazolium ionic liquid immobilized SBA-15 for boosting heterogeneous Wacker oxidation of styrene

Yan,

Li,

et al. 2024

Applied Surface Science

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Synergic Effects of Ordered Mesoporous Bifunctional Ionic Liquid: A Recyclable Catalyst to Access Chemoselective N-Protected Indoline-2,3-dione Analogous

Siddan,

Solomon

2024

Catalysts

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SBA-15 and organic ionic liquid were incorporated in a post-grafting technique for generating a bifunctional ionic liquid embedded mesoporous SBA-15. The prepared heterogeneous catalyst was employed for the first time to synthesize N-alkylated indoline-2,3-dione at mild conditions to afford excellent yields in a short reaction time. The synthesized DABCOIL@SBA-15 catalyst was meticulously characterized by various techniques, such as FT-IR, solid-state 13C NMR, solid-state 29Si NMR, small-angle X-ray diffraction (XRD), and N2 adsorption–desorption. Further, the morphological behavior of the catalyst was studied by SEM and TEM. The thermal stability and number of active sites were determined by thermogravimetric analysis (TGA). The Hammett equation was used to analyze the synergetic effect of the catalyst and substituent effects on the N-alkylated products of 5-substituted isatin derivatives, which resulted in a negative slope. This negative slope indicates a positive charge in the transition state. Notably, the DABCOIL@SBA-15 catalyst demonstrated its practicality by being reused for seven cycles with consistently high catalytic activity.

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Palladium covalently anchored imidazolium functionalized SBA-15: An efficient recoverable heterogeneous catalyst for the hydrocarboxylation of styrene

Cited by 3 publications

References 43 publications

Synthesis of 3,4-dihydropyrimidines and octahydroquinazolinones by SBA-15 supported schiff-base iron (III) complex as durable and reusable catalyst under ultrasound irradiation

Synthesis of 3,4-dihydropyrimidines and octahydroquinazolinones by SBA-15 supported schiff-base iron (III) complex as durable and reusable catalyst under ultrasound irradiation

PdCl2-FeCl3-imidazolium ionic liquid immobilized SBA-15 for boosting heterogeneous Wacker oxidation of styrene

Synergic Effects of Ordered Mesoporous Bifunctional Ionic Liquid: A Recyclable Catalyst to Access Chemoselective N-Protected Indoline-2,3-dione Analogous

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