Two organic–inorganic hybrid polyoxovanadates as reusable catalysts for Knoevenagel condensation

2019 ◽  
Vol 43 (15) ◽  
pp. 5813-5819 ◽  
Author(s):  
Chunxia Li ◽  
Dandan Zhong ◽  
Xianqiang Huang ◽  
Guodong Shen ◽  
Qiang Li ◽  
...  
Keyword(s):  
Heterogeneous Catalysts ◽  
Catalytic Properties ◽  
Knoevenagel Condensation ◽  
Inorganic Hybrid

Two novel polyoxovanadates as heterogeneous catalysts have exhibited excellent catalytic properties in the Knoevenagel condensation, especially compound 1's activity is basically maintained after three cycles.

Calix[4]arene-based polyoxometalate organic–inorganic hybrid and coordination polymer as heterogeneous catalysts for azide–alkyne cycloaddition and Knoevenagel condensation reaction

2019 ◽  
Vol 43 (40) ◽  
pp. 15871-15878 ◽  
Author(s):  
Liu-Juan Yue ◽  
Ying-Ying Liu ◽  
Guo-Hai Xu ◽  
Jian-Fang Ma
Keyword(s):  
Coordination Polymer ◽  
Heterogeneous Catalysts ◽  
Knoevenagel Condensation ◽  
Condensation Reaction ◽  
Inorganic Hybrid ◽  
Condensation Reactions ◽  
Arene Ligand ◽  
Knoevenagel Condensation Reaction

One POM-based Cu(i)-hybrid and one Cd(ii) compound have been achieved by a calix[4]arene ligand. They exhibit efficient catalytic abilities for azide–alkyne cycloaddition and Knoevenagel condensation reactions, respectively.

A review of the recent progress on heterogeneous catalysts for Knoevenagel condensation

2021 ◽  
Vol 50 (13) ◽  
pp. 4445-4469
Author(s):  
Jimmy Nelson Appaturi ◽  
Rajni Ratti ◽  
Bao Lee Phoon ◽  
Samaila Muazu Batagarawa ◽  
Israf Ud Din ◽  
...  
Keyword(s):  
Organic Chemistry ◽  
Green Chemistry ◽  
Heterogeneous Catalysts ◽  
Recent Progress ◽  
Knoevenagel Condensation ◽  
Sustainable Production ◽  
Organic Reactions ◽  
Synthetic Organic Chemistry

One of the most crucial attributes of synthetic organic chemistry is to design organic reactions under the facets of green chemistry for the sustainable production of chemicals.

An Efficient and Reusable Multifunctional Composite Magnetic Nanocatalyst for Knoevenagel Condensation

Synlett ◽  
2019 ◽  
Vol 30 (06) ◽  
pp. 699-702 ◽  
Author(s):  
Yu Hu ◽  
Nan Yao ◽  
Jin Tan ◽  
Yang Liu
Keyword(s):  
Active Sites ◽  
Heterogeneous Catalysts ◽  
Knoevenagel Condensation ◽  
Metal Organic Framework ◽  
Catalytic Performance ◽  
Significant Loss ◽  
Magnetic Nanocatalyst ◽  
Metal Organic ◽  
Nife2o4 Nanoparticles ◽  
Organic Framework

A range of multifunctional magnetic metal–organic framework nanomaterials consisting of various mass ratios of the metal–organic framework MIL-53(Fe) and magnetic SiO2@NiFe2O4 nanoparticles were designed, prepared, characterized, and evaluated as heterogeneous catalysts for the Knoevenagel condensation. The as-fabricated nanomaterials, especially the nanocatalyst MIL-53(Fe)@SiO2@NiFe2O4(1.0), showed good catalytic performance in the Knoevenagel condensation at room temperature as a result of synergistic interaction between the Lewis acid iron sites of MIL-53(Fe) and the active sites of the magnetic SiO2@NiFe2O4 nanoparticles. In addition, the heterogeneous catalyst was readily recovered and a recycling test showed that it could be reused for five times without significant loss of its catalytic activity, making it economical and environmentally friendly.

scholarly journals Layered double hydroxide anchored ionic liquids as amphiphilic heterogeneous catalysts for the Knoevenagel condensation reaction

2018 ◽  
Vol 47 (9) ◽  
pp. 3059-3067 ◽  
Author(s):  
Tengfei Li ◽  
Wei Zhang ◽  
Wei Chen ◽  
Haralampos N. Miras ◽  
Yu-Fei Song
Keyword(s):  
Heterogeneous Catalysts ◽  
Knoevenagel Condensation ◽  
Condensation Reaction ◽  
Knoevenagel Reaction ◽  
Solid Base ◽  
Solid Base Catalysts ◽  
Base Catalysts ◽  
Excellent Activity ◽  
Knoevenagel Condensation Reaction ◽  
Double Hydroxide

In this paper, three solid base catalysts of LDH-IL-Cn (n = 4, 8, 12) were synthesized by adopting an exfoliation/assembly approach. The as-prepared catalyst showed excellent activity and selectivity for the Knoevenagel reaction in aqueous solution.

Platinum nanoparticle encapsulation during hydrothermal growth of mesoporous oxides: Synthesis, characterization and catalytic properties

2005 ◽  
Vol 900 ◽  
Author(s):  
Robert M. Rioux ◽  
Hyunjoon Song ◽  
James D Hoefelmeyer ◽  
Krisztian Niesz ◽  
Michael Grass ◽  
...  
Keyword(s):  
Particle Size ◽  
Platinum Nanoparticles ◽  
Heterogeneous Catalysts ◽  
Catalytic Properties ◽  
Synthetic Method ◽  
Ethylene Hydrogenation ◽  
Platinum Nanoparticle ◽  
Ordered Mesoporous ◽  
Mesoporous Oxide ◽  
Mesoporous Oxides

ABSTRACTA synthetic method for the design of heterogeneous catalysts incorporating monodisperse platinum nanoparticles into ordered mesoporous oxide frameworks has been developed. Nanoparticles were synthesized in solution in the presence of surface templating polymer and encapsulated into mesoporous oxide matrices. After polymer removal by calcination, ethylene hydrogenation rates were consistent with previously reported results, while superior activity of low coordination atoms in small crystallites during ethane hydrogenolysis was demonstrated. Changes in reaction selectivity with particle size during the hydrogenation/dehydrogenation of cyclohexene were attributed to a hydrogen coverage effect influencing the hydrogenation pathway and the apparent structure sensitivity of the dehydrogenation pathway.

Efficient heterogeneous catalysis by dual ligand Zn(ii)/Cd(ii) MOFs for the Knoevenagel condensation reaction: adaptable synthetic routes, characterization, crystal structures and luminescence studies

2018 ◽  
Vol 5 (10) ◽  
pp. 2630-2640 ◽  
Author(s):  
Bhavesh Parmar ◽  
Parth Patel ◽  
Vishnu Murali ◽  
Yadagiri Rachuri ◽  
Rukhsana I. Kureshy ◽  
...  
Keyword(s):  
Heterogeneous Catalysis ◽  
Crystal Structures ◽  
Heterogeneous Catalysts ◽  
Knoevenagel Condensation ◽  
Condensation Reaction ◽  
Knoevenagel Condensation Reaction ◽  
Synthetic Routes

Chemically stable Zn(ii)/Cd(ii) MOFs as a heterogeneous catalysts for Knoevenagel condensation.

2D covalent organic frameworks with built-in amide active sites for efficient heterogeneous catalysis

2019 ◽  
Vol 55 (96) ◽  
pp. 14538-14541 ◽  
Author(s):  
Yang Li ◽  
Weiben Chen ◽  
Ruidong Gao ◽  
Ziqiang Zhao ◽  
Ting Zhang ◽  
...  
Keyword(s):  
Heterogeneous Catalysis ◽  
Active Sites ◽  
Heterogeneous Catalysts ◽  
Knoevenagel Condensation ◽  
Covalent Organic Frameworks ◽  
Excellent Performance ◽  
Bottom Up

Two new amide functionalized covalent organic frameworks (COFs) were synthesized via a bottom-up strategy and used as heterogeneous catalysts toward Knoevenagel condensation with excellent performance.

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