scholarly journals Oxidation of Thiol Using Ionic Liquid-Supported Organotelluride as a Recyclable Catalyst

Catalysts ◽  
2020 ◽  
Vol 10 (4) ◽  
pp. 398 ◽  
Author(s):  
Aya Mihoya ◽  
Shinichi Koguchi ◽  
Yuga Shibuya ◽  
Minato Mimura ◽  
Makoto Oba
Keyword(s):  
Ionic Liquid ◽  
Catalytic Activity ◽  
Liquid Phase ◽  
Aerobic Oxidation ◽  
Supported Catalyst ◽  
Recyclable Catalyst ◽  
High Catalytic Activity ◽  
Thiol Oxidation ◽  
Ether Extraction ◽  
Organotellurium Compounds

Organotellurium compounds are known to be useful oxidation reagents. For developing a recoverable and reusable reagent, this paper describes the use of an ionic liquid (IL) support for the organotellurium reagent and its application as a recyclable catalyst for thiol oxidation. We have successfully prepared a novel diphenyl telluride derivative 5 bearing an imidazolium hexafluorophosphate group in its structure. It is found that the IL-supported diphenyl telluride 5 efficiently catalyzed the aerobic oxidation of various thiols in [bmim]PF6 solution under photosensitized conditions to provide the corresponding disulfides in excellent yields. The product can be isolated by simple ether extraction. The IL-supported catalyst 5 remaining in the ionic liquid phase can be reused for five successive runs while retaining high catalytic activity (97% yield even in the fifth run).

N-Heterocyclic carbene palladium complex supported on ionic liquid-modified graphene oxide as an efficient and recyclable catalyst for Suzuki reaction

RSC Advances ◽  
2014 ◽  
Vol 4 (28) ◽  
pp. 14586-14591 ◽  
Author(s):  
Siyavash Kazemi Movahed ◽  
Rahele Esmatpoursalmani ◽  
Ayoob Bazgir
Keyword(s):  
Ionic Liquid ◽  
Graphene Oxide ◽  
Catalytic Activity ◽  
Palladium Complex ◽  
Suzuki Reaction ◽  
Recyclable Catalyst ◽  
High Catalytic Activity ◽  
Modified Graphene Oxide ◽  
Modified Graphene ◽  
Silylation Reaction

An N-heterocyclic carbene Pd complex immobilized on GO with an ionic liquid framework synthesized by the modification of GO through a silylation reaction displayed a high catalytic activity in the Suzuki reaction.

Mesoporous Polymeric Support Retaining High Catalytic Activity of Polyoxotungstate for Liquid-Phase Olefin Epoxidation using H2O2

ChemCatChem ◽  
2011 ◽  
Vol 3 (9) ◽  
pp. 1435-1438 ◽  
Author(s):  
Sanjeev P. Maradur ◽  
Changbum Jo ◽  
Dae-Heung Choi ◽  
Kyeongyeon Kim ◽  
Ryong Ryoo
Keyword(s):  
Catalytic Activity ◽  
Liquid Phase ◽  
High Catalytic Activity ◽  
Olefin Epoxidation ◽  
Polymeric Support

In situ assembly of ultrafine Mn3O4 nanoparticles into MIL-101 for selective aerobic oxidation

2017 ◽  
Vol 7 (18) ◽  
pp. 4136-4144 ◽  
Author(s):  
Yu Fu ◽  
Yanglong Guo ◽  
Yun Guo ◽  
Yunsong Wang ◽  
Li Wang ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Metal Oxides ◽  
Aerobic Oxidation ◽  
High Catalytic Activity ◽  
Selective Aerobic Oxidation ◽  
Mn3o4 Nanoparticles

Nanosize metal oxides generally possess high catalytic activity, but they tend to agglomerate into larger particles during a reaction.

Silica Gel Supported Dual Acidic Ionic Liquid as a Recyclable and Efficient Catalyst for Esterification and Acetalization Reactions

2011 ◽  
Vol 233-235 ◽  
pp. 1336-1339 ◽  
Author(s):  
Qiang Zhang ◽  
Hong Su ◽  
Jun Luo
Keyword(s):  
Ionic Liquid ◽  
Catalytic Activity ◽  
Silica Gel ◽  
Covalent Bond ◽  
High Catalytic Activity ◽  
The Novel ◽  
Hydrogen Sulfate ◽  
Efficient Catalyst ◽  
Acidic Ionic Liquid

A supported dual acidic ionic liquid was prepared via anchoring 3-sulfobutyl-1-(3-propyltriethoxysilane) imidazolium hydrogen sulfate onto common silica gel by covalent bond. The novel immobilized acidic ionic liquid illustrated high catalytic activity in esterification and acetalization reactions. The products could be separated by simple decantation and the recovered catalyst could be recycled without remarkable loss of catalytic activity even after eight runs for esterification and six runs for acetalization.

scholarly journals Pd On Thermo-Responsive Composite of Silica-Coated Carbon Nanotube And 1-Vinyl-3-Butylimidazolium-Based Ionic Liquid Copolymers As An Efficient Catalyst For Hydrogenation of Nitro Compounds

2021 ◽  
Author(s):  
Samahe Sadjadi ◽  
Neda Abedian-Dehaghani ◽  
Majid M. Heravi
Keyword(s):  
Ionic Liquid ◽  
Catalytic Activity ◽  
Aqueous Media ◽  
Nitro Compounds ◽  
Solution Temperature ◽  
High Catalytic Activity ◽  
Impregnation Method ◽  
Efficient Catalyst ◽  
Wet Impregnation ◽  
Coated Carbon

Abstract In this work, an ionic liquid-containing thermo-responsive heterogeneous catalyst with utility for promoting hydrogenation of nitro-compounds in aqueous media is developed. To prepare the catalyst, silica-coated carbon nanotubes were synthesized and vinyl-functionalized. The resulted compound was then polymerized with 1-viny-3-butylimidazolium bromide and N-isopropylacrylamide. The obtained ionic liquid-containing thermo-responsive composite was palladated via wet-impregnation method to give the final catalyst. Study of the performance of the catalyst confirmed high catalytic activity of the catalyst at temperature above the lower critical solution temperature. Furthermore, the catalyst was highly recyclable and showed negligible Pd leaching upon recycling. Broad substrate scope and selectivity of the catalyst towards reduction of nitro functionality were also confirmed. Furthermore, hot filtration test implied the heterogeneous nature of the catalysis. The comparison of the activity of Pd/CNT-P with some control catalysts approved the importance of hybridization of P and CNT and the presence of ionic liquid for the catalytic activity.

Aerobic Oxidation of Phosphite Esters to Phosphate Esters by Using an Ionic-Liquid-Supported Organotelluride Reusable Catalyst

Synlett ◽  
2020 ◽  
Vol 31 (20) ◽  
pp. 2043-2045
Author(s):  
Shinichi Koguchi ◽  
Aya Mihoya ◽  
Yuga Shibuya ◽  
Akane Ito ◽  
Anna Toyoda ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Aerobic Oxidation ◽  
Recyclable Catalyst ◽  
Phosphate Esters ◽  
High Conversion ◽  
Reusable Catalyst ◽  
Isolation And Purification ◽  
Conversion Rates

AbstractWe describe the synthesis of an ionic-liquid (IL)-supported organotelluride catalyst and its application as a recyclable catalyst for the aerobic oxidation of phosphite esters to phosphate esters. This method shows high conversion rates, allows the ready isolation and purification of the resulting products, and exhibits good reusability of the catalyst.

Supported ionic liquid phase catalysis for aerobic oxidation of primary alcohols

2010 ◽  
Vol 389 (1-2) ◽  
pp. 179-185 ◽  
Author(s):  
Anna Chrobok ◽  
Stefan Baj ◽  
Wojciech Pudło ◽  
Andrzej Jarzębski
Keyword(s):  
Ionic Liquid ◽  
Liquid Phase ◽  
Aerobic Oxidation ◽  
Primary Alcohols ◽  
Supported Ionic Liquid

A novel magnetic palladium catalyst for the mild aerobic oxidation of 5-hydroxymethylfurfural into 2,5-furandicarboxylic acid in water

2015 ◽  
Vol 5 (6) ◽  
pp. 3194-3202 ◽  
Author(s):  
Nan Mei ◽  
Bing Liu ◽  
Judun Zheng ◽  
Kangle Lv ◽  
Dingguo Tang ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Catalytic Activity ◽  
Palladium Catalyst ◽  
Palladium Nanoparticles ◽  
Aerobic Oxidation ◽  
High Catalytic Activity ◽  
Supported Palladium ◽  
Magnetically Separable ◽  
Furandicarboxylic Acid

Magnetically separable, graphene oxide-supported palladium nanoparticles showed high catalytic activity for the aerobic oxidation of 5-hydroxymethylfurfural into 2,5-furandicarboxylic acid.

scholarly journals Comparative Catalytic Activity of Metal-Containing Catalysts of Different Nature in the Liquid-Phase Aerobic Oxidation of Ethylbenzene

2014 ◽  
Vol 8 (1) ◽  
pp. 27-30
Author(s):  
Vagif Abbasov ◽  
Eldar Zeynalov ◽  
Narmina Abdullayeva
Keyword(s):  
Catalytic Activity ◽  
Liquid Phase ◽  
Catalytic Oxidation ◽  
Oxidation Process ◽  
Carbon Nanofiber ◽  
Aerobic Oxidation ◽  
Diesel Fraction ◽  
Oxidation Of Ethylbenzene

The article describes an impact of metal-containing compounds - carbon nanofiber of platelet type, ferrocene and naphthenate Co on the aerobic oxidation of ethylbenzene. It has been established that all types of the added compounds reveal significant catalytic activity in the oxidation of ethylbenzene and may be ordered as: ferrocene > naphthenate Co ≥ carbon nanofiber. The authors guess that the results obtained are helpful to design new catalytic oxidation process profile of diesel fraction rich by aromatics.

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