A robust Ag/Ti nanocluster as an efficient heterogeneous Lewis Acid-Base catalyst for C–C bond formation

Wang, Ran; Sheng, Kai; Huang, Xianqiang; Azam, Mohammad; Tung, Chen‐Ho; Sun, Di

doi:10.1016/j.jcat.2023.05.013

Cited by 8 publications

(3 citation statements)

References 64 publications

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“…Consequently, developing an efficient, easily separable, and environmentally friendly heterogeneous catalyst for these condensation reactions becomes significantly important. 3…”

Section: Introductionmentioning

confidence: 99%

Efficient catalysis of Knoevenagel condensation by 1D copper-containing heteropolyoxoniobate at room temperature

Zuo,

Li,

Sun

et al. 2024

Inorg. Chem. Front.

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“…Consequently, developing an efficient, easily separable, and environmentally friendly heterogeneous catalyst for these condensation reactions becomes significantly important. 3…”

Section: Introductionmentioning

confidence: 99%

Efficient catalysis of Knoevenagel condensation by 1D copper-containing heteropolyoxoniobate at room temperature

Zuo,

Li,

Sun

et al. 2024

Inorg. Chem. Front.

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“…For such a reaction, Lewis or Brønsted acid sites promote deacetalization step, while base centers can accelerate the Knoevenagel reaction. Nevertheless, the development of bifunctional acid–base catalysts for such reactions is challenging because these antagonistic sites tend to deactivate each other 14–16 …”

Section: Introductionmentioning

confidence: 99%

“…Nevertheless, the development of bifunctional acid-base catalysts for such reactions is challenging because these antagonistic sites tend to deactivate each other. [14][15][16] Coordination polymers are crystalline substances in which metal clusters or nodes are attached by multitopic organic molecules to generate one-, two-, or threedimensional frameworks. 17,18 The combination of inorganic and organic moieties in coordination polymers can endow them with possible acidic and basic properties with catalytic activity.…”

Section: Introductionmentioning

confidence: 99%

A new 2D coordination polymer as bifunctional heterogeneous catalyst for tandem deacetalization‐Knoevenagel reaction

Najafi,

Janczak

2023

Applied Organom Chemis

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Designing multifunctional catalysts for one‐pot organic transformations is highly important due to economic and environmental point of views. Synthesis of bifunctional acid–base tandem catalysts has drawn attention owing to the incorporation of antagonistic active sites in a single catalyst. In the current work, a novel coordination polymer, [NaZn(btc)(H2O)3].1.5H2O (1) (1,3,5‐benzenetricarboxylic acid [H3btc]), was prepared by solvothermal method. Single crystal analysis of 1 revealed that the structure is two dimensional and contains the coexisted Lewis acid–base sites. The material was further characterized by powder X‐ray diffraction, FT‐IR, thermogravimetric analysis, and temperature programed desorption of NH3 (NH3‐TPD) and CO2 (CO2‐TPD). Compound 1 was utilized as a heterogeneous catalyst for tandem deacetalization‐Knoevenagel reaction of benzaldehyde dimethyl acetal and malononitrile. It exhibited good activity and structural stability during the reaction.

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Aggregation of titanium‐oxo clusters

Xie,

Fang,

Zhang

2024

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Compared with nanoparticle‐aspect relatives titanium dioxide (TiO2), titanium‐oxo clusters (TOCs) are atomically structural‐determined and can be further precisely modified through coordination and supramolecular chemistry. Another parallel research direction is titanium‐based metal‐organic frameworks, and those based on TOC have attracted particular attention because of their high optical performances resulting from the cluster aggregation effect. Though challenging, assembling macro‐materials from specific clusters helps establish the assembly chemistry of clusters and incorporates porous and flexible characteristics into a single bulk material. Although separate reviews are reported in these two branches, no comprehensive review is available to highlight the bridges between them. Herein, we review and summarize the development and progress of new aggregation of TOCs, from intramolecular unique cluster aggregation to hierarchical intermolecular aggregation via covalent forces, coordination bonds, and non‐covalent forces using the specific clusters as precursors. We hope this review fills the gap in the methodology of assembling particular‐aggregated TOCs and their derived frameworks, providing general guidance to researchers interested in this area.

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A robust Ag/Ti nanocluster as an efficient heterogeneous Lewis Acid-Base catalyst for C–C bond formation

Cited by 8 publications

References 64 publications

Efficient catalysis of Knoevenagel condensation by 1D copper-containing heteropolyoxoniobate at room temperature

Efficient catalysis of Knoevenagel condensation by 1D copper-containing heteropolyoxoniobate at room temperature

A new 2D coordination polymer as bifunctional heterogeneous catalyst for tandem deacetalization‐Knoevenagel reaction

Aggregation of titanium‐oxo clusters

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