A well-defined phosphine free metal-ligand cooperative route for N-alkylation of aromatic amines via activation of renewable alcohols catalyzed by a NNN pincer cobalt(II) complexes

Dalton Transactions, Год журнала: 2025, Номер unknown

Опубликована: Янв. 1, 2025

Two cobalt( ii ) complexes C1 and C2, supported by an NNN pincer, were synthesized, characterized with various techniques. These utilized to study catalytic activity in the N -alkylation of amines via borrowing hydrogen strategy.

Язык: Английский

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A dicationic nickel complex-catalyzed asymmetric synthesis of chiral benzylic amines: evolution from reductive amination to borrowing hydrogen reaction

Chinese Chemical Letters, Год журнала: 2025, Номер unknown, С. 111148 - 111148

Опубликована: Март 1, 2025

Язык: Английский

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Heterogeneous Mn@CeO₂ Catalyst for α-Alkylation of Ketones with Alcohols via Hydrogen-Borrowing Strategy

ACS Omega, Год журнала: 2025, Номер 10(9), С. 9649 - 9660

Опубликована: Фев. 24, 2025

Construction of a C-C bond via alkylation ketones with alcohol as the alkylating source by employing hydrogen-borrowing strategy is attracting significant attention and highly appealing due to its simplicity, cost-effectiveness, environmental benefits, fact that water only byproduct. The development heterogeneous catalysts based on nonprecious base metals progressing rapidly. Our newly disclosed manganese-doped cerium oxide nanocomposite (10 wt % Mn@CeO2) stands out cost-efficient air-stable catalyst, synthesized through straightforward coprecipitation method employed for α-alkylation primary alcohols strategy. X-ray diffraction (XRD) analysis confirms high crystallinity CeO2, while field emission scanning electron microscopy (FE-SEM) high-resolution transmission (HR-TEM) images reveal MnO2 nanoparticles, measuring 19 nm in size, uniformly decorated rod-shaped CeO2 which have size 33 nm. photoelectron spectroscopy (XPS) uncovers presence Mn4+ species embedded nanorods. Electron paramagnetic resonance (EPR) further indicates surface defects contribute impressive catalytic yield, ranges from 70 98% α-alkylated ketones. Thermogravimetric (TGA) demonstrates remarkable thermal stability maintaining up 800 °C. Additionally, inductively coupled plasma mass spectrometry (ICP-MS) no leaching Mn ions, emphasizing heterogeneity catalyst. Remarkably, 10 Mn@CeO2 recycled six cycles loss activity. This study underscores synergistic effect between metal redox pair key exceptional activity reactions, making promising catalyst sustainable efficient formation.

Язык: Английский

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Palladium-catalyzed chemoselective N-monoallylation of aromatic amines with diallylamine through a borrowing hydrogen strategy

Tetrahedron, Год журнала: 2025, Номер unknown, С. 134648 - 134648

Опубликована: Апрель 1, 2025

Язык: Английский

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