Recent advances in the rare-earth metal triflates-catalyzed organic reactions

Wu, Yan‐Chao; Zhang, Lei-Yang; Wang, Nai‐Xing; Xing, Yalan

doi:10.1080/01614940.2020.1831758

Cited by 15 publications

(9 citation statements)

References 77 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Interestingly, catalytic activity can be significantly improved when a cocatalyst or promoter is added during the reaction. − Therefore, the exploitation of cocatalysts to improve catalytic efficiency is also extremely important for the synthesis of DPC. Recently, triflate salts have been proven to be an effective Lewis acid catalyst or cocatalyst to enhance catalytic performance. − Therefore, a range of triflate salts, including Mg(OTf) 2 , Zn(OTf) 2 , Y(OTf) 3 , and Cu(OTf) 2 , were chosen to investigate the effect of cocatalysts on the synthesis of DPC from CO 2 and phenol, and the results are presented in Table . It is clearly noted that the addition of the cocatalysts to ZnCl 2 resulted in the remarkable improvement of catalytic activity, but the degree of improvement is different for different cocatalysts.…”

Section: Resultsmentioning

confidence: 99%

Efficient Synthesis of Diphenyl Carbonate from CO₂, Phenol, and Carbon Tetrachloride under Mild Conditions

Wang

Jiang

Peng

et al. 2022

ACS Sustainable Chem. Eng.

View full text Add to dashboard Cite

Diphenyl carbonate (DPC) has outstanding practical potential, especially as a key building block for the phosgene-free synthesis of polycarbonate (PC) in the chemical industry. The synthesis of DPC from CO 2 has been investigated for decades, but exploring highly efficient catalytic systems is still challenging. Herein, an efficient catalytic system for the direct synthesis of DPC from CO 2 , phenol, and carbon tetrachloride was developed by using a ZnCl 2 / copper triflate (Cu(OTf) 2 ) composite catalyst. For the first time, high yield and high selectivity were achieved for DPC synthesis under mild conditions, even at atmospheric pressure. Carefully designed control experiments and DFT studies indicated that the synergistic activation of Cu(OTf) 2 and its anion complex with ZnCl 2 for phenol and CO 2 led to a remarkably improved catalytic activity through a Lewis acid-assisted catalysis. This study not only provides a new strategy for efficient preparation of DPC but also offers an effective pathway for better CO 2 utilization.

show abstract

Section: Resultsmentioning

confidence: 99%

Efficient Synthesis of Diphenyl Carbonate from CO₂, Phenol, and Carbon Tetrachloride under Mild Conditions

Wang

Jiang

Peng

et al. 2022

ACS Sustainable Chem. Eng.

View full text Add to dashboard Cite

show abstract

“…Despite glycerol dehydration into acrolein being considered a valorization route by itself, recent efforts have mainly focused on acrolein oxidation products: Acrylic acid [108,172,173] and different patents can be found in the literature on this topic [174][175][176][177], e.g., catalysts based on Mo-V-O systems demonstrate high yields (75%) for acrylic acid production from glycerol [178].…”

Section: Glycerol Selective Oxidationmentioning

confidence: 99%

Recent Advances in Glycerol Catalytic Valorization: A Review

et al. 2020

View full text Add to dashboard Cite

Once a biorefinery is ready to operate, the main processed materials need to be completely evaluated in terms of many different factors, including disposal regulations, technological limitations of installation, the market, and other societal considerations. In biorefinery, glycerol is the main by-product, representing around 10% of biodiesel production. In the last few decades, the large-scale production of biodiesel and glycerol has promoted research on a wide range of strategies in an attempt to valorize this by-product, with its transformation into added value chemicals being the strategy that exhibits the most promising route. Among them, C3 compounds obtained from routes such as hydrogenation, oxidation, esterification, etc. represent an alternative to petroleum-based routes for chemicals such as acrolein, propanediols, or carboxylic acids of interest for the polymer industry. Another widely studied and developed strategy includes processes such as reforming or pyrolysis for energy, clean fuels, and materials such as activated carbon. This review covers recent advances in catalysts used in the most promising strategies considering both chemicals and energy or fuel obtention. Due to the large variety in biorefinery industries, several potential emergent valorization routes are briefly summarized.

show abstract

“…Asymmetric synthesis of value-added chemicals is the main task of catalysis as emphasized in recent reviews. [35,36] Continuous-flow microreactors are used in the organic, [15, enzyme, [16][17][18][19][20][64][65][66][67][68][69][70][71][72][73][74][75][76] or electrochemical [68,77] asymmetric synthesis of various enantiomers or diastereoisomers for various reasons. They have, however, one common characteristic, i.e., a microfluidic platform, which provides scientists with one or more significant advantages over classic laboratory or industrial equipment.…”

Section: Continuous-flow Microreactors For Enantiomer and Diastereoisomer Synthesismentioning

confidence: 99%

Microreaction and membrane technologies for continuous single-enantiomer production: A review

et al. 2021

View full text Add to dashboard Cite

Microreaction and membrane technologies offer optimal conditions for controlling enantiomer synthesis and purification processes in continuous production, with numerous advantages over batch manufacturing. One of the many forces driving the development of such technologies for the production of single optical isomers is the need for enantiomerically pure pharmaceutical drugs because enantiomers may display opposite therapeutic effects or different treatment efficacies and side effects. Yet, despite advances in asymmetric synthesis and separation techniques, preparing enantiomerically pure compounds remains a challenging task. Here, we review the progress in microfluidics and membrane chiral separation over the last two decades. In addition to describing and critically assessing the state of the art in both disciplines, we provide an overview of their beneficial properties and characteristics for developing technologies toward producing enantiomerically pure compounds. Concomitantly, we evaluate efforts to integrate synthesis and membrane separation into a microfluidic platform and pinpoint the limiting factors that must be overcome before these platforms can be fully deployed in the industry.

show abstract

Recent advances in the rare-earth metal triflates-catalyzed organic reactions

Cited by 15 publications

References 77 publications

Efficient Synthesis of Diphenyl Carbonate from CO₂, Phenol, and Carbon Tetrachloride under Mild Conditions

Efficient Synthesis of Diphenyl Carbonate from CO₂, Phenol, and Carbon Tetrachloride under Mild Conditions

Recent Advances in Glycerol Catalytic Valorization: A Review

Microreaction and membrane technologies for continuous single-enantiomer production: A review

Contact Info

Product

Resources

About

Recent advances in the rare-earth metal triflates-catalyzed organic reactions

Cited by 15 publications

References 77 publications

Efficient Synthesis of Diphenyl Carbonate from CO2, Phenol, and Carbon Tetrachloride under Mild Conditions

Efficient Synthesis of Diphenyl Carbonate from CO2, Phenol, and Carbon Tetrachloride under Mild Conditions

Recent Advances in Glycerol Catalytic Valorization: A Review

Microreaction and membrane technologies for continuous single-enantiomer production: A review

Contact Info

Product

Resources

About

Efficient Synthesis of Diphenyl Carbonate from CO₂, Phenol, and Carbon Tetrachloride under Mild Conditions

Efficient Synthesis of Diphenyl Carbonate from CO₂, Phenol, and Carbon Tetrachloride under Mild Conditions