Tetrahedron, Journal Year: 2025, Volume and Issue: unknown, P. 134485 - 134485
Published: Jan. 1, 2025
Language: Английский
ChemCatChem, Journal Year: 2024, Volume and Issue: 16(10)
Published: Feb. 8, 2024
Abstract The design of molecular scaffolds bearing multiple functional groups for the activation and ring‐opening epoxides is a crucial challenge synthesis efficient homogeneous heterogeneous catalysts that are used cycloaddition reaction CO 2 to epoxides. Traditional approaches prepare such multifunctional often imply multistep synthetic procedures expensive building blocks. In this work we show bifunctional Lewis acid metal quaternary ammonium halide group can be prepared in just two steps starting from an opportunely designed epoxide precursor by using inexpensive substrates. Such readily accessible catalyst was applied series under atmospheric conditions generally leading quantitative substrate conversion high carbonate selectivities. Importantly, also epoxide‐driven concept developed preparation catalyst, could recyclable systems target reaction.
Language: Английский
Citations
9
Molecules, Journal Year: 2024, Volume and Issue: 29(10), P. 2307 - 2307
Published: May 14, 2024
The cycloaddition of CO2 to epoxides afford versatile and useful cyclic carbonate compounds is a highly investigated method for the nonreductive upcycling CO2. One main focuses current research in this area discovery readily available, sustainable, inexpensive catalysts, catalytic methodologies that allow their seamless solvent-free recycling. Water, often regarded as an undesirable pollutant process, progressively emerging helpful reaction component. On one hand, it serves hydrogen bond donor (HBD) enhance performance ionic compounds; on other aqueous media development diverse protocols can boost or ease recycling molecular catalysts. An overview advances use biphasic systems provided work along with recommendations possible future developments.
Language: Английский
Citations
8
Chemical Communications, Journal Year: 2024, Volume and Issue: unknown
Published: Nov. 25, 2024
Recent works on practical and recyclable catalysts for the cycloaddition of CO 2 to epoxides are reviewed with an eye use inexpensive, readily-available, non-toxic materials future emerging designs.
Language: Английский
Citations
6
ACS Sustainable Chemistry & Engineering, Journal Year: 2024, Volume and Issue: 12(25), P. 9428 - 9445
Published: June 7, 2024
Recently, covalent–organic frameworks (COFs) have emerged as a new catalytic strategy for the fixation of C1 feedstock CO2 into heterocyclic compounds, and these compounds can be utilized production fine chemicals. In this work, we designed manganese-anchored COF material (Mn@COF) via simple, one-pot Schiff base condensation process. The synthesized Mn@COF was successfully examined promising catalyst styrene carbonate (SC) synthesis under temperate reaction conditions. catalyst's inherent properties are well described with aid various analytical spectroscopic techniques, such Fourier transform infrared spectroscopy (FT-IR), thermogravimetric analysis (TGA), X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), energy-dispersive (EDX), transmission (TEM), N2-sorption, photoelectron (XPS), Py-adsorption, temperature-programmed desorption (TPD) analysis. experimental XRD results in good agreement computational structural simulation outcomes evidently disclose that Mn metal is anchored to nitrogen atom framework based on observed interlayer intermolecular distances. These effectively increase diffusion initial reagents rate medium. bare showed less activity at atmospheric pressure, but exhibited superior toward desired product mild effect different parameters detail investigated, additionally, substrate scope study by using epoxides optimized conditions over catalyst. active sites triazine N covalently synergistically enhanced cycloaddition between oxide. Interestingly, proposed plausible mechanism assistance characterization outputs. Remarkably, its stable physicochemical properties, recycled six successive cycles This idea emphasizes selective presence sustainable
Language: Английский
Citations
5
Applied Organometallic Chemistry, Journal Year: 2024, Volume and Issue: 38(5)
Published: March 8, 2024
The anthropogenic carbon dioxide (CO 2 ) fixation and various engineering strategies are gaining very significant attention because of the expansion net‐zero environment in atmosphere. Herein, we designed a sodium aluminate@γ‐alumina (NaAlO @γ‐Al O 3 catalyst by simple facile precipitation impregnation tactics. A series different weight percentage NaAlO materials were successfully synthesized well characterized using advanced analytical spectroscopic techniques such as TGA, XRD, FE‐SEM, TEM/HR‐TEM, FT‐IR, Raman, TPD, XPS analysis. was employed competent for CO under atmospheric pressure reaction conditions. catalytic activity results evidently revealed that cycloaddition achieved 94% styrene oxide conversion 93% selectivity, along with an 87% yield carbonate at 120 °C 6 h. Furthermore, comprehensively examined effect parameters aluminate amount, co‐catalyst temperature, time reaction. Additionally, terminal internal epoxides tested optimized conditions moderate to excellent desired cyclic products. Interestingly, plausible mechanism proposed synthesis surface support characterization experimental results. Remarkably, could be easily recoverable recyclable up six consecutive cycles without declining its initial stable structural physicochemical properties.
Language: Английский
Citations
4
Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: unknown, P. 155635 - 155635
Published: Sept. 1, 2024
Language: Английский
Citations
4
Tetrahedron, Journal Year: 2025, Volume and Issue: unknown, P. 134485 - 134485
Published: Jan. 1, 2025
Language: Английский
Citations
0