scholarly journals Synthesis of cyclic carbonates by ruthenium(VI) bis-imido porphyrin/TBACl-catalyzed reaction of epoxide with CO2

2020 ◽  
Vol 24 (05n07) ◽  
pp. 809-816
Author(s):  
Caterina Damiano ◽  
Paolo Sonzini ◽  
Daniela Intrieri ◽  
Emma Gallo

The catalytic activity of the ruthenium(VI) bis-imido porphyrin complex/TBACl binary system in promoting the CO[Formula: see text] cycloaddition to epoxides forming cyclic carbonates is here reported. The system was very efficient in catalyzing the conversion of differently substituted epoxides under mild experimental conditions (100 [Formula: see text]C and 0.6 MPa of CO[Formula: see text]. Even if the sole TBACl resulted active under the optimized experimental conditions, the addition of ruthenium species was fundamental to maximizing the reaction productivity both in terms of epoxide conversions and cyclic carbonate selectivities. A preliminary mechanistic study indicated a positive role of ruthenium imido nitrogen atom in activating carbon dioxide.

RSC Advances ◽  
2015 ◽  
Vol 5 (16) ◽  
pp. 12382-12386 ◽  
Author(s):  
Zhiqiang Zhang ◽  
Liancai Xu ◽  
Wenkai Feng

The activity of azaphosphatranes, novel types of non-metal and solvent-free catalysts for the synthesis of cyclic carbonates from epoxides and CO2, is unraveled by DFT calculations.


2020 ◽  
Vol 10 (10) ◽  
pp. 3265-3278 ◽  
Author(s):  
Marta Navarro ◽  
Luis F. Sánchez-Barba ◽  
Andrés Garcés ◽  
Juan Fernández-Baeza ◽  
Israel Fernández ◽  
...  

The binuclear aluminum complexes [AlR2(κ2-NN′;κ2-NN′)AlR2] with TBAB/PPNCl behave as excellent systems for cyclic carbonate formation from CO2 with challenging epoxides.


2020 ◽  
Vol 44 (13) ◽  
pp. 5019-5022 ◽  
Author(s):  
Wei Hou ◽  
Gang Wang ◽  
Xiaojing Wu ◽  
Shuoyi Sun ◽  
Chunyang Zhao ◽  
...  

Lanthanide clusters display a wide substrate scope and high catalytic activity for the insertion of CO2 into epoxides to form cyclic carbonates.


2014 ◽  
Vol 4 (6) ◽  
pp. 1638-1643 ◽  
Author(s):  
Michael E. Wilhelm ◽  
Michael H. Anthofer ◽  
Robert M. Reich ◽  
Valerio D'Elia ◽  
Jean-Marie Basset ◽  
...  

Imidazolium bromides combined with niobium(v) choride were used as catalyst system for the reaction of CO2 with epoxides to cyclic carbonates. The variation of the cation structure strongly affects the properties of the imidazolium salt and therefore the catalytic activity.


Catalysts ◽  
2020 ◽  
Vol 11 (1) ◽  
pp. 2
Author(s):  
Ángela Mesías-Salazar ◽  
Yersica Rios Yepes ◽  
Javier Martínez ◽  
René S. Rojas

A set of tetranuclear alkyl aluminum adducts 1 and 2 supported by benzodiimidazole-diylidene ligands L1, N,N’-(1,5-diisopropylbenzodiimidazole-2,6-diylidene)bis(propan-2-amine), and L2, N,N’-(1,5-dicyclohexyl-benzodiimidazole-2,6-diylidene)dicyclohexanamine were synthetized in exceptional yields and characterized by spectroscopic methods. These compounds were studied as catalysts for cyclic carbonate formation (3a–o) from their corresponding terminal epoxides (2a–o) and carbon dioxide utilizing tetrabutylammonium iodide as a nucleophile in the absence of a solvent. The experiments were carried out at 70 °C and 1 bar CO2 pressure for 24 h and adduct 1 was the most efficient catalyst for the synthesis of a large variety of monosubstituted cyclic carbonates with excellent conversions and yields.


2020 ◽  
Vol 44 (6) ◽  
pp. 2547-2554 ◽  
Author(s):  
Rakhimoni Borah ◽  
Naranarayan Deori ◽  
Sanfaori Brahma

In situ formed vanadium(+4) species catalyzed carbon dioxide fixation reaction, leading to 99% conversion of epoxides to cyclic carbonates under mild conditions is reported here, along with the study on the in situ formed catalyst to some extent.


2013 ◽  
Vol 2013 ◽  
pp. 1-9 ◽  
Author(s):  
Yubing Xiong ◽  
Feng Bai ◽  
Zipeng Cui ◽  
Na Guo ◽  
Rongmin Wang

Polymer-supported quaternary phosphonium salt (PS-QPS) was explored as effective catalyst for the coupling reaction of carbon dioxide with epoxides. The results indicated that cyclic carbonates with high yields (98.6%) and excellent selectivity (100%) could be prepared at the conditions of 5 MPa CO2, 150°C, and 6 h without the addition of organic solvents or cocatalysts. The effects of various reaction conditions on the catalytic performance were investigated in detail. The catalyst is applicable to a variety of epoxides, producing the corresponding cyclic carbonates in good yields. Furthermore, the catalyst could be recovered easily and reused for five times without loss of catalytic activity obviously. A proposed mechanism for synthesis of cyclic carbonate in the presence of PS-QPS was discussed. The catalyst was characterized by thermogravimetric analysis (TGA), scanning electron microscopy (SEM), and Fourier transform infrared (FT-IR) spectrum. It is believed that PS-QPS is of great potential for CO2fixation applications due to its unusual advantages, such as easy preparation, high activity and selectivity, stability, low cost, and reusability.


2009 ◽  
Vol 62 (8) ◽  
pp. 917 ◽  
Author(s):  
Jing-Lun Wang ◽  
Liang-Nian He ◽  
Xiao-Yong Dou ◽  
Fang Wu

Poly(ethylene glycol) (PEG) in this work proved to be an efficient reaction medium for the reaction of vicinal halohydrin with carbon dioxide in the presence of a base to synthesise cyclic carbonates. Notably, PEG-400 as an environmentally friendly solvent exhibits a unique influence on reactivity compared with conventional organic solvents. Various cyclic carbonates were prepared in high yield employing this protocol. The process presented here has potential applications in the industrial production of cyclic carbonates because of its simplicity, cost benefits, ready availability of starting materials, and mild reaction conditions.


2021 ◽  
Author(s):  
Maxim Zabilskiy ◽  
Vitaly L. Sushkevich ◽  
Mark A. Newton ◽  
Frank Krumeich ◽  
Maarten Nachtegaal ◽  
...  

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