Catalysis of photooxidation reactions through transformation between Cu2+ and Cu+ in TiO2–Cu–MOF composites

2018 ◽  
Vol 54 (47) ◽  
pp. 5984-5987 ◽  
Author(s):  
Chunjun Chen ◽  
Tianbin Wu ◽  
Dexin Yang ◽  
Pei Zhang ◽  
Huizhen Liu ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Coupling Reaction ◽  
Light Irradiation ◽  
Excellent Activity ◽  
Glaser Coupling

Novel porous TiO2@Cu3(BTC)2 composites, which were synthesized using ionic liquids (ILs) as solvents, exhibited excellent activity for photooxidation of styrene to 4-aryl tetralones and promoting the Glaser coupling reaction with O2 under light irradiation.

Triphenylphosphite and ionic liquids: positive effects in the Heck cross-coupling reaction

2010 ◽  
Vol 51 (52) ◽  
pp. 6867-6870 ◽  
Author(s):  
Juan C. Cárdenas ◽  
Luca Fadini ◽  
Cesar A. Sierra
Keyword(s):  
Ionic Liquids ◽  
Coupling Reaction ◽  
Cross Coupling ◽  
Positive Effects ◽  
Cross Coupling Reaction

scholarly journals Novel and Reusable Mesoporous Silica Supported 4-Methylbenzenesul- fonate-functionalized Ionic Liquids for Room Temperature Highly Efficient Preparation of 2,4,5-Triaryl-1H-imidazoles

2021 ◽  
Vol 65 (4) ◽  
Author(s):  
Yang Liu ◽  
Qi Rong ◽  
Chen Chen ◽  
Hu Yu Lin
Keyword(s):  
Ionic Liquids ◽  
Room Temperature ◽  
Catalytic Mechanism ◽  
Catalyst Stability ◽  
Catalyst Amount ◽  
Supported Ionic Liquid ◽  
Highly Efficient ◽  
Excellent Activity ◽  
Commercial Applications ◽  
Supported Ionic Liquids

Abstract. A series of mesoporous materials supported ionic liquids were prepared and tested as effective and practical catalysts for the synthesis of 2,4,5-triaryl-1H-imidazoles. The effects of type of catalysts, catalyst amount, and catalyst stability have also been investigated in detail, the catalyst Ti-SBA-15@ILTsO exhibited excellent activity in excellent yields of 92 % ~ 99 % with low catalyst amount at room temperature within 1 h. In addition, the supported ionic liquid can be easily recovered and reused for six times with satisfactory catalytic activity. Furthermore, a general synergetic catalytic mechanism for the reaction was proposed. Maybe this work employing Ti-SBA-15@ILTsO as highly efficient and stable catalyst for the synthesis of 2,4,5-triaryl-1H-imidazoles has potential commercial applications.   Resumen. Se prepararon y probaron una serie de materiales mesoporosos soportados con líquidos iónicos como catalizadores eficaces y prácticos para la síntesis de 2,4,5-triaryl-1H-imidazoles. También se investigaron en detalle los efectos del tipo de catalizadores, la cantidad de catalizador y la estabilidad del catalizador. El catalizador Ti-SBA-15@ILTsO mostró una excelente actividad con rendimientos excelentes del 92 % ~ 99% con una baja cantidad de catalizador a temperatura ambiente en 1 h. Además, el líquido iónico soportado puede recuperarse fácilmente y reutilizarse durante seis veces con una actividad catalítica satisfactoria. Por otro lado, se propuso un mecanismo catalítico sinérgico general para la reacción. Este trabajo que emplea Ti-SBA-15@ILTsO como catalizador altamente eficiente y estable para la síntesis de 2,4,5-triaril-1H-imidazoles puede tener aplicaciones potencialmente comerciales.

A triptycene-based two-dimensional porous organic polymeric nanosheet

2017 ◽  
Vol 8 (36) ◽  
pp. 5533-5538 ◽  
Author(s):  
Jing-Jing Chen ◽  
Tian-Long Zhai ◽  
Yi-Fan Chen ◽  
Shinan Geng ◽  
Chan Yu ◽  
...  
Keyword(s):  
Coupling Reaction ◽  
Liquid Interface ◽  
Two Dimensional ◽  
Air Liquid Interface ◽  
Glaser Coupling

A new application of the “old” Glaser coupling reaction for a two-dimensional porous polymeric nanosheet on an air/liquid interface is developed.

Catalytic performance of a series of guanidinium-based ionic liquids in the coupling reaction of carbon dioxide with epoxides

RSC Advances ◽  
2016 ◽  
Vol 6 (90) ◽  
pp. 87036-87043 ◽  
Author(s):  
Ping Li ◽  
Ya Li ◽  
Ci Chen ◽  
Li Wang ◽  
Jinglai Zhang
Keyword(s):  
Carbon Dioxide ◽  
Ionic Liquids ◽  
Cycloaddition Reaction ◽  
Coupling Reaction ◽  
Catalytic Performance

The cycloaddition reaction of CO2 into EO, catalyzed by a series of functional guanidinium-based ionic liquids, is schematically studied by the DFT.

Unravelling the Mechanism of Glaser Coupling Reaction on Ag(111) and Cu(111) Surfaces: a Case for Halogen Substituted Terminal Alkyne

2018 ◽  
Vol 122 (26) ◽  
pp. 14537-14545 ◽  
Author(s):  
Tao Wang ◽  
Haifeng Lv ◽  
Lin Feng ◽  
Zhijie Tao ◽  
Jianmin Huang ◽  
...  
Keyword(s):  
Coupling Reaction ◽  
Terminal Alkyne ◽  
Glaser Coupling

Influence of ionic liquids microenvironment on the coupling reaction of epoxide and carbon dioxide: DFT and MD

2020 ◽  
Vol 308 ◽  
pp. 113069
Author(s):  
Xinrui Zhu ◽  
Yuhang Hu ◽  
Jingsheng Zhou ◽  
Hehe Ren ◽  
Xugeng Guo ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Ionic Liquids ◽  
Coupling Reaction

scholarly journals Synthesis of 4-Alkyl-4H-1,2,4-triazole Derivatives by Suzuki Cross-coupling Reactions and Their Luminescence Properties

Molecules ◽  
2019 ◽  
Vol 24 (3) ◽  
pp. 652 ◽  
Author(s):  
Monika Olesiejuk ◽  
Agnieszka Kudelko ◽  
Marcin Swiatkowski ◽  
Rafal Kruszynski
Keyword(s):  
Ionic Liquids ◽  
Coupling Reaction ◽  
Cross Coupling ◽  
Boronic Acids ◽  
Luminescence Properties ◽  
Coupling Reactions ◽  
Triazole Derivatives ◽  
Cross Coupling Reactions ◽  
Cross Coupling Reaction ◽  
Derivatives Of

New derivatives of 4-alkyl-3,5-diaryl-4H-1,2,4-triazole were synthesized utilizing the Suzuki cross-coupling reaction. The presented methodology comprises of the preparation of bromine-containing 4-alkyl-4H-1,2,4-triazoles and their coupling with different commercially available boronic acids in the presence of ionic liquids or in conventional solvents. The obtained compounds were tested for their luminescence properties.

The oxidative coupling between benzaldehyde derivatives and phenylacetylene catalyzed by rhodium complexes via C-H bond activation

2020 ◽  
Vol 26 (1) ◽  
pp. 20-25
Author(s):  
Xinyi Zhao ◽  
Hongge Jia ◽  
Qingji Wang ◽  
Heming Song ◽  
Yanan Tang ◽  
...  
Keyword(s):  
Amino Acid ◽  
Oxidative Coupling ◽  
Bond Activation ◽  
Coupling Reaction ◽  
Reaction Yield ◽  
Rhodium Complexes ◽  
Electronic Effects ◽  
Oxidative Coupling Reaction ◽  
Excellent Activity ◽  
Benzaldehyde Derivatives

AbstractThis paper reports the use of rhodium (Rh) catalysts for the oxidative coupling reaction between phenylacetylene and benzaldehyde derivatives via C-H bond activation. These reactions were catalyzed by Rh(l-amino acid)(cod) (the l-amino acid is l-phenylalanine, l-valine or l-proline; cod is 1,5-cyclooctadiene) to obtain chromones in 12.7–88.3% yield. These new Rh catalysts have excellent activity for the coupling reaction between phenylacetylene and different benzaldehyde derivatives. It was found that the electronic effects of the benzaldehyde derivative substituent affected the reaction yield, which is in accordance with the proposed mechanism.

Protic pyrazolium ionic liquids for efficient chemical fixation of CO2: design, synthesis, and catalysis

2018 ◽  
Vol 3 (2) ◽  
pp. 348-356 ◽  
Author(s):  
Danning Zheng ◽  
Tengfei Wang ◽  
Xinrui Zhu ◽  
Ci Chen ◽  
Tiegang Ren ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Catalytic Activity ◽  
Ionic Liquids ◽  
Propylene Oxide ◽  
Coupling Reaction ◽  
Chemical Fixation ◽  
Design Synthesis

Three new protic pyrazolium ILs, HTMPzBr, HMM3PzBr, and HMM5PzBr, have been synthesized to explore their catalytic activity for the coupling reaction of carbon dioxide and propylene oxide.

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