Tandem catalysis: one-pot synthesis of cyclic organic carbonates from olefins and carbon dioxide

Green Chemistry, Journal Year: 2021, Volume and Issue: 23(5), P. 1921 - 1941

Published: Jan. 1, 2021

One-pot tandem procedures represent a green and general approach towards process intensification as they are intrinsically simpler compared to the conventional stepwise processes, do not require intermediate isolation generally more efficient.

Language: Английский

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Recent advances in bimetallic metal-organic frameworks and their derivatives for thermal catalysis

Nano Research, Journal Year: 2023, Volume and Issue: 16(12), P. 12919 - 12935

Published: Aug. 8, 2023

Language: Английский

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UiO-66(Ce) metal-organic framework as a highly active and selective catalyst for the aerobic oxidation of benzyl amines

Molecular Catalysis, Journal Year: 2020, Volume and Issue: 499, P. 111277 - 111277

Published: Nov. 14, 2020

Language: Английский

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A Polyoxometalate-Based Inorganic Porous Material with both Proton and Electron Conductivity by Light Actuation: Photocatalysis for Baeyer–Villiger Oxidation and Cr(VI) Reduction

Inorganic Chemistry, Journal Year: 2020, Volume and Issue: 60(2), P. 682 - 691

Published: Dec. 23, 2020

Two-dimensional (2D) crystalline porous materials with designable structures and high surface areas are currently a hot research topic in the field of proton- electron-conducting materials, which provide great opportunities to orderly accommodate carriers available spaces accurately understand conducting path. The 2D dual-conductive inorganic framework [Co(H2O)6]2{[Co(H2O)4]4[WZn3(H2O)2(ZnW9O34)2]}·8H2O (Co6Zn5W19) is synthesized by combining [WZn3(H2O)2(ZnW9O34)2]12– (Zn5W19) Co(II) ion via hydrothermal method. Due presence consecutive H-bonding network, electrostatic interactions, packing effects between guest molecules, Co6Zn5W19 displays proton conductivity (3.55 × 10–4 S cm–1 under 98% RH 358 K) synergistic effect combined components. Additionally, photoactuated electron injection into semiconducting an important strategy for switching electronic conductivity, because it can efficiently reduce frameworks without destroying crystallinity. I–V curves tablet reduced oxidized states yield conductivities 1.26 10–6 5 10–8 cm–1, respectively. Moreover, also successfully applied photocatalytic reduction toxic Cr(VI) metal utilizing its excellent storage capacity Baeyer–Villiger (BV) oxidation molecular oxygen/aldehyde system.

Language: Английский

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A copper-functionalized zirconium metal–organic framework for catalytic oxidative carboxylation of olefins and CO₂

New Journal of Chemistry, Journal Year: 2024, Volume and Issue: 48(12), P. 5300 - 5310

Published: Jan. 1, 2024

A Cu incorporation by post-metalation of a Zr-based metal–organic framework (MOF) produces robustly bimetallic MOF that is suitable for selective CO 2 adsorption and efficient conversion olefins into cyclic carbonates.

Language: Английский

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Oxidative carboxylation of olefins with CO₂: environmentally benign access to five-membered cyclic carbonates

RSC Advances, Journal Year: 2020, Volume and Issue: 10(15), P. 9103 - 9115

Published: Jan. 1, 2020

This review provides an overview of the direct synthesis five-membered cyclic carbonatesviaoxidative carboxylation corresponding olefins and carbon dioxide.

Language: Английский

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An organic chromophore -modified samarium-containing polyoxometalate: excitation-dependent color tunable behavior from the organic chromophores to the lanthanide ion

Dalton Transactions, Journal Year: 2019, Volume and Issue: 49(2), P. 388 - 394

Published: Nov. 26, 2019

Here, an organic-inorganic hybrid lanthanide-based polyoxometalate (Ln-POM) [N(CH3)4]3K2Sm(C7H5O2)(H2O)2(α-PW11O39)·11H2O (1) was successfully synthesized and characterized well by several physicochemical techniques. In the polyanion of 1, benzoic acid ligand directly binds a Sm3+ ion for formation polyanion. This structure can effectively sensitize emissions ion, which confirmed photoluminescence time-resolved emission spectroscopy 1. The study demonstrates that possesses relatively high-symmetry coordination geometry, is consistent with structural analysis in Furthermore, 1 form 3D 4,8-topology framework through linkage K1 K2 ions. addition, properties have been explored, revealing shows reversible color-tunable based on excitation from 260 nm to 350 nm, emitting colors blue pink.

Language: Английский

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N-heterocyclic carbene-pyridine ligand coordinated Mo(II) complexes catalyzed synthesis of cyclic carbonates from carbon dioxide and epoxides

Journal of CO2 Utilization, Journal Year: 2023, Volume and Issue: 69, P. 102384 - 102384

Published: Jan. 6, 2023

A variety of zero-valent molybdenum complexes and divalent with N-heterocyclic carbenes (NHC)-pyridine ligands were synthesized, their catalytic activities performances in the cycloaddition reaction epoxides carbon dioxide (CO2) investigated. It was found that show high activity synthesis cyclic carbonates from epoxide CO2 comparison complexes. The combined tetrabutylammonium iodide (TBAI) can effectively transform various terminal internal under 30–80 ℃ 5–10 bar pressure. mechanic experiments by FT-IR HRMS spectrometry reveal pathway binary system combination TBAI.

Language: Английский

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Urea and Thiourea-Functionalized, Pyridinium-Based Ionic Polymers Convert CO₂ to Cyclic Carbonate under Mild Conditions

ACS Applied Polymer Materials, Journal Year: 2022, Volume and Issue: 4(8), P. 5851 - 5860

Published: July 22, 2022

The employment of hydrogen-bond donors has become an important metal-free method for activating organic molecules considering their competency in epoxide activation and stabilization reaction intermediates. In this work, pyridinium-based ionic polymers (PIP) were synthesized, which readily reacted with 3,5-bis(trifluoromethyl)phenyl isothiocyanate 3,5-bis(trifluoromethyl) phenyl isocyanate under ambient conditions to introduce thiourea urea structures into the porous polymer. Consequently, bifunctional PIP-thiourea PIP-urea containing quaternary ammonium centers dual fabricated. tested as catalysts cycloaddition CO2 epoxides. results reveal a higher catalytic activity both than that catalyst PIP, confirms efficacy hydrogen bonds introduced by post-modification improvement. A substantial yield corresponding cyclic carbonate products can be obtained only 0.3 mol % catalysts. addition, as-synthesized heterogeneous exhibited good stability excellent recyclability. Hopefully, designed will prove play powerful role reactions utilization.

Language: Английский

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Bibliographic survey of the strategies implemented for the one-pot synthesis of cyclic carbonates from styrene and other alkenes using CO2 and green oxidants

Journal of CO2 Utilization, Journal Year: 2022, Volume and Issue: 65, P. 102215 - 102215

Published: Sept. 14, 2022

Cyclic carbonates are key compounds with a large scope of applications. Their one-pot synthesis from cheap and available alkenes using CO2 oxidants has gained great attention an economic perspective. Furthermore, their under relatively low temperature pressure various such as alkyl peroxides, H2O2 O2 could lead to increasingly sustainable preparation route. Over the last two decades, some advances have been made in development catalytic systems affording reaction epoxides progressively milder conditions which is prerequisite for whole process. This review covers state art cyclic alkenes, mainly styrene, focus on catalysts working moderate presence green reagents and, lesser extent, H2O2. Procedures leading step pathway will be especially emphasized. Catalytic involving steps oxidative carboxylation (i.e. auto-tandem vs. orthogonal catalysis or catalysis) issues that addressed this review.

Language: Английский

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