The catalytic performance of (ZrO)n (n = 1–4, 12) clusters for Suzuki–Miyaura cross-coupling: a DFT study DOI
Zhichao Zhang,

Wen‐Lu Wang,

Hao Zhong

и другие.

Dalton Transactions, Год журнала: 2024, Номер 53(45), С. 18258 - 18267

Опубликована: Янв. 1, 2024

Superatoms are special clusters with similar physicochemical properties to individual atoms in the periodic table, which open up new avenues for exploring inexpensive catalysts. Given that ZrO superatom possesses same number of valence electrons as a Pd atom, mechanisms Suzuki-Miyaura reaction catalyzed by (ZrO)

Язык: Английский

A Coordination Polymer with a Silylene-Supported Pd6 Core as an Efficient Heterogeneous Hydrogenation Catalyst DOI Creative Commons

Taiga Mitomo,

Yoshimasa Wada,

T Suda

и другие.

Chemical Science, Год журнала: 2025, Номер 16(10), С. 4450 - 4455

Опубликована: Янв. 1, 2025

A hexanuclear palladium cluster supported by two silylene units was readily linked molecules of a linear ditopic isocyanide to afford coordination polymer that retained the core Pd6(SiPh2)2Cl2 framework. The obtained exhibited good performance as heterogeneous catalyst in hydrogenation various alkenes common organic solvents and protic such H2O. Furthermore, showed sufficient stability during order for it be recycled reused.

Язык: Английский

Процитировано

1
Regioselective Suzuki–Miyarua Cross-Coupling for Substituted 2,4-Dibromopyridines Catalyzed by C3-Symmetric Tripalladium Clusters DOI

Zhixin He,

Meng Chen,

Yingrui Song

и другие.

The Journal of Organic Chemistry, Год журнала: 2025, Номер 90(5), С. 1895 - 1904

Опубликована: Янв. 24, 2025

Multipalladium clusters possess peculiar structures and synergistic effects for reactivity selectivity. Herein, C3-symmetric tripalladium (1, 0.5 mol %) afford C2-regioselective SMCC of 2,4-dibromopyridine with phenylboronic acids or pinacol esters (C2:C4 up to 98:1), in contrast Pd(OAc)2 ligand-free conditions. In addition, similar C2-selectivity was achieved Sonogashira, Negishi, Kumada coupling reactions. This method highlights their powerful catalytic ability, exclusive C2-selectivity, broad substrate scope, efficient amplification, multiple ligand-exchange feasibility demonstrates that the conventional sites could be successfully regulated even reversed by catalysts.

Язык: Английский

Процитировано

1
Recent Advances in Palladium-Catalyzed Suzuki-Miyaura Cross-Coupling Reactions: Exploration of Catalytic Systems, Reaction Parameters, and Ligand Influences: A Review DOI
Dana A. Kader,

Mohammed Koksh Sidiq,

Salam Ghafour Taher

и другие.

Journal of Organometallic Chemistry, Год журнала: 2025, Номер unknown, С. 123569 - 123569

Опубликована: Фев. 1, 2025

Язык: Английский

Процитировано

1
Flash Communication: Pd2Zn2 Clusters from the Reduction of Palladium(II) Dichloride Precursors with Metallic Zinc DOI Creative Commons

Georgina Rai,

Martí Garçon, Philip W. Miller

и другие.

Organometallics, Год журнала: 2025, Номер 44(6), С. 716 - 719

Опубликована: Март 8, 2025

We report the synthesis and solid-state characterization of two unusual Pd2Zn2 clusters formed from partial reduction [PdL2Cl2] precursors (L2 = dcpe or dppe) with metallic zinc. The new have been characterized by single crystal X-ray diffraction contain a Pd2Zn2Cl3 core capped chelating phosphine ligands Zn in formal +1.5 oxidation state. While they possess near tetrahedral arrangement metal ions, calculations bonding analysis (NBO, AIM) suggest that there is limited Zn- - -Zn these species. Characterization solution state suggestive dynamic behavior on dissolution, both diamagnetic paramagnetic species observed NMR EPR spectroscopy. One was shown to be an effective precursor for homocoupling aryl bromide.

Язык: Английский

Процитировано

0
Size‐Controllable Palladium Nanoparticles: Superior Catalytic Activities Over Identically Ligated Tri‐Palladium Clusters DOI
Meng Chen,

Zhixin He,

Yingrui Song

и другие.

ChemistrySelect, Год журнала: 2025, Номер 10(17)

Опубликована: Апрель 29, 2025

Abstract Small‐sized palladium nanoparticles (PdNPs) are highly active nanocatalysts and have attracted great interest for many years. However, preparing size‐controllable PdNPs is still challenging. Here, ultrafine air‐stable PdNPs‐1/2 (2.0 ± 0.3/1.2 0.4 nm) stabilized by multiple nucleophilic ligands (phosphines, thiols, anions) were prepared, their sizes could be successfully regulated simply varying anionic (SbF 6 − or BF 4 ). We further investigated catalytic activities compared them with identically ligated tri‐palladium clusters [Pd 3 ] + ‐1/2 . These homogeneous presented superior both the Suzuki–Miyaura cross‐coupling (SMCC) 4‐nitrophenol reduction reactions. The PdNPs‐1 exhibited highest activity reactions good applicability to different substrates, reaction rate constant reached 1.10 × 10 −2 S −1 reduction. results revealed that employment of significantly affects size synergistic activities. This work will open possibilities controllable size, dispersity, stability a broad range applications.

Язык: Английский

Процитировано

0
Discrete Metal Clusters Supported by Heavier Group-14-Element Ligands DOI Creative Commons
Yusuke Sunada

Coordination chemistry research., Год журнала: 2025, Номер unknown, С. 100007 - 100007

Опубликована: Май 1, 2025

Язык: Английский

Процитировано

0
Oxygen‐Accelerated Suzuki–Miyaura Coupling Reaction Without Stoichiometric Base Addition DOI Creative Commons
Meiji Honda, Shingo Hasegawa, Ken Motokura

и другие.

ChemistrySelect, Год журнала: 2025, Номер 10(19)

Опубликована: Май 1, 2025

Abstract The Suzuki–Miyaura coupling (SMC) reaction is an efficient method for constructing C(aryl)–C(aryl) bonds. SMC reactions are typically carried out in the presence of base additives (>100 mol%), thereby leading to increased by‐product formation. In this study, promotional effect O 2 atmosphere on was demonstrated without requirement a stoichiometric amount base. cross‐coupling product yield enhanced upon increasing pressure within range 0.0–0.5 MPa. X‐ray absorption spectroscopy revealed different Pd species under Ar and atmospheres. More specifically, Pd(0) nanoparticles were detected (0.1 MPa), whereas Pd(II) conditions (0.5 MPa). Under atmosphere, solution phase promoted re‐adsorbed support surface after at room temperature provide reusable catalyst system.

Язык: Английский

Процитировано

0
Chemical Activation of Atom-Precise Pd3 Nanoclusters on γ-Al2O3 Supports for Transfer Hydrogenation Reactions DOI
Siddhant Singh,

Dami Wi,

Kholoud E. Salem

и другие.

Nanoscale, Год журнала: 2024, Номер unknown

Опубликована: Янв. 1, 2024

Pd 3 nanoclusters on Al 2 O supports were activated by reducing agents. The activity and selectivity of the catalysts for transfer hydrogenation cinnamaldehyde was a function both identity loading agent used.

Язык: Английский

Процитировано

0
Heterogenization of Palladium Trimer and Nanoparticles through Polymerization Boosted Catalytic Efficiencies in Recyclable Coupling and Reduction Reactions DOI
Miaomiao Wang,

Zhixin He,

Meng Chen

и другие.

Chemistry - A European Journal, Год журнала: 2024, Номер unknown

Опубликована: Окт. 15, 2024

The development of heterogeneous palladium catalysts has shown continuous vitality in the field catalysis and materials. In this work, we report one concise free radical polymerization approach to accomplish aromatic trimer functionalized polymers PSS

Язык: Английский

Процитировано

0
The catalytic performance of (ZrO)n (n = 1–4, 12) clusters for Suzuki–Miyaura cross-coupling: a DFT study DOI
Zhichao Zhang,

Wen‐Lu Wang,

Hao Zhong

и другие.

Dalton Transactions, Год журнала: 2024, Номер 53(45), С. 18258 - 18267

Опубликована: Янв. 1, 2024

Superatoms are special clusters with similar physicochemical properties to individual atoms in the periodic table, which open up new avenues for exploring inexpensive catalysts. Given that ZrO superatom possesses same number of valence electrons as a Pd atom, mechanisms Suzuki-Miyaura reaction catalyzed by (ZrO)

Язык: Английский

Процитировано

0