Catalysis Science & Technology, Год журнала: 2024, Номер unknown
Опубликована: Янв. 1, 2024
We computationally identified Ni 3 Fe as a promising catalyst for the quinoline (QL) selective hydrogenation to 1,2,3,4-tetrahydroquinoline (py-THQL) using density functional theory calculations and microkinetic modeling.
Язык: Английский
Journal of the American Chemical Society, Год журнала: 2024, Номер 146(33), С. 23338 - 23347
Опубликована: Авг. 6, 2024
A single-atom iron catalyst was found to exhibit exceptional reactivity in acceptorless dehydrogenative coupling for quinoline synthesis, outperforming known homogeneous and nanocatalyst systems. Detailed characterizations, including aberration-corrected HAADF-STEM, XANES, EXAFS, jointly confirmed the presence of atomically dispersed centers. Various functionalized quinolines were efficiently synthesized from different amino alcohols a range ketones or alcohols. The achieved turnover number (TON) up 10
Язык: Английский
Процитировано
12
Опубликована: Янв. 1, 2025
Язык: Английский
Процитировано
0
Journal of Colloid and Interface Science, Год журнала: 2024, Номер 676, С. 485 - 495
Опубликована: Июль 9, 2024
Язык: Английский
Процитировано
3
European Journal of Organic Chemistry, Год журнала: 2024, Номер 27(25)
Опубликована: Май 18, 2024
Abstract Hydrogenation of N‐heteroarenes to saturated N‐heterocycles is an important reaction in organic synthesis. Hydrogen a green reducing reagent and has been widely applied industrial production. The development appropriate catalyst realize hydrogenation at low pressure temperature desired. In this study, we developed cobalt‐based derived from ZIF‐67 that exhibits high activity for N‐heteroarene under 5–20 bar hydrogen, which relatively as compared reported catalytic systems. This nano‐cobalt shows broad substrate scope can be reused without obvious loss.
Язык: Английский
Процитировано
2
ChemPlusChem, Год журнала: 2024, Номер 89(12)
Опубликована: Сен. 13, 2024
Abstract Colloidal metal nanoparticles exhibit interesting catalytic properties for the hydrogenation of (hetero)arenes. Catalysts based on precious metals, such as Ru and Rh, promote this reaction efficiently under mild conditions. In contrast, heterogeneous catalysts earth‐abundant metals can selectively hydrogenate (hetero)arenes but require harsher Bimetallic that combine are materials to mitigate drawbacks each component. To end, RuNi bearing a phosphine ligand were prepared through decomposition [Ru(η 4 ‐C 8 H 12 )(η 6 10 )] [Ni(η ) 2 ] by at 85 °C. Wide angle X‐ray scattering confirmed bimetallic segregated structure, with Ni predominantly surface. Spectroscopic analyses revealed coordinated surface both suggesting, well, partial shell covering core. The RuNi‐based nanomaterials used in quinoline assess impact metallic composition stabilizing agent their performance.
Язык: Английский
Процитировано
1
Applied Catalysis B Environment and Energy, Год журнала: 2024, Номер 351, С. 123959 - 123959
Опубликована: Апрель 24, 2024
Язык: Английский
Процитировано
0
ACS Applied Nano Materials, Год журнала: 2024, Номер 7(9), С. 10182 - 10193
Опубликована: Апрель 29, 2024
Employing a same catalyst, the reversible acceptorless dehydrogenation–hydrogenation and oxidative dehydrogenation of N-heterocycles have rarely been explored in literature. Herein, we synthesized an earth-abundant, cheap, robust cobalt heterogeneous nanoparticles for hydrogenation as well under mild reaction conditions, which makes it attractive hydrogen storage purposes. easy-to-synthesize reusable library molecules was reversibly hydrogenated dehydrogenated presence several other reducible functional groups good to excellent yields. Notably, practical applicability protocol demonstrated by gram-scale synthesis few biologically important such angustureine, galipinine, aspernigerin. This inexpensive catalyst can be recycled up five times without considerable loss catalytic activity, inductively coupled plasma mass spectrometry (ICP-MS) analysis filtrate showed only trace amount leaching. Several control experiments kinetic studies were carried out understand mechanism.
Язык: Английский
Процитировано
0
Опубликована: Янв. 1, 2024
This work describes the application of Cu single-atom catalysts (SACs) in photocatalytic oxidative dehydrogenation N-heterocyclic amines to respective N-heteroaromatics through environmentally benign and sustainable pathways. The catalyst support, a mesoporous graphitic carbon nitride (mpg-C3N4) is synthesized one-step pyrolysis method, decoration over mpg-C3N4 support was achieved by simple microwave-assisted preparation method. decorated on (Cu@mpg-C3N4) characterized various characterization techniques, including XRD, UV-visible spectrometry, HRTEM, HAADF-STEM with EDS mapping, AC-STEM, elemental ICP-OES, XANES, EXAFS, BET surface area. These studies confirmed that Cu@mpg-C3N4 exhibited high area, nature, medium band gap, low metal loading. as-synthesized well-characterized photocatalyst then evaluated for its efficacy converting N-heterocycles into corresponding N-heteroaromatic compounds excellent selectivity (>99%). transformation using water as green solvent 30 W white light visible source, demonstrating catalyst's potential reactions.
Язык: Английский
Процитировано
0
Catalysis Science & Technology, Год журнала: 2024, Номер unknown
Опубликована: Янв. 1, 2024
We computationally identified Ni 3 Fe as a promising catalyst for the quinoline (QL) selective hydrogenation to 1,2,3,4-tetrahydroquinoline (py-THQL) using density functional theory calculations and microkinetic modeling.
Язык: Английский
Процитировано
0