Cycloaddition of carbon dioxide to epoxides by highly active constrained aluminum chloride complexes

2021 ◽  
Author(s):  
Nattiya Laiwattanapaisarn ◽  
Arnut Virachotikul ◽  
Khamphee Phomphrai
Keyword(s):  
Carbon Dioxide ◽  
Aluminum Chloride ◽  
Low Cost ◽  
Cyclic Carbonates ◽  
Chloride Complexes ◽  
Highly Active ◽  
Low Toxicity

The transformation of carbon dioxide (CO2) and epoxides to cyclic carbonates has gained much interest due to its low cost, abundance, low toxicity, and renewability. Therefore, novel constrained aluminum chloride...

scholarly journals Highly Active CO2 Fixation into Cyclic Carbonates Catalyzed by Tetranuclear Aluminum Benzodiimidazole-Diylidene Adducts

Catalysts ◽  
2020 ◽  
Vol 11 (1) ◽  
pp. 2
Author(s):  
Ángela Mesías-Salazar ◽  
Yersica Rios Yepes ◽  
Javier Martínez ◽  
René S. Rojas
Keyword(s):  
Carbon Dioxide ◽  
Co2 Fixation ◽  
Cyclic Carbonate ◽  
Spectroscopic Methods ◽  
Cyclic Carbonates ◽  
Efficient Catalyst ◽  
Highly Active ◽  
Carbonate Formation ◽  
Tetrabutylammonium Iodide

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.

scholarly journals Cycloaddition Reaction of Carbon Dioxide to Epoxides Catalyzed by Polymer-Supported Quaternary Phosphonium Salts

2013 ◽  
Vol 2013 ◽  
pp. 1-9 ◽  
Author(s):  
Yubing Xiong ◽  
Feng Bai ◽  
Zipeng Cui ◽  
Na Guo ◽  
Rongmin Wang
Keyword(s):  
Carbon Dioxide ◽  
Low Cost ◽  
Cycloaddition Reaction ◽  
Coupling Reaction ◽  
Catalytic Performance ◽  
Cyclic Carbonate ◽  
Cyclic Carbonates ◽  
Phosphonium Salts ◽  
Polymer Supported ◽  
High Yields

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.

scholarly journals Robust bifunctional aluminium–salen catalysts for the preparation of cyclic carbonates from carbon dioxide and epoxides

2015 ◽  
Vol 11 ◽  
pp. 1614-1623 ◽  
Author(s):  
Yuri A Rulev ◽  
Zalina Gugkaeva ◽  
Victor I Maleev ◽  
Michael North ◽  
Yuri N Belokon
Keyword(s):  
Carbon Dioxide ◽  
Cyclic Carbonates ◽  
Cyclohexene Oxide ◽  
Aromatic Rings ◽  
Reaction Conditions ◽  
Chloride Complexes ◽  
Carbon Dioxide Pressure ◽  
Salen Ligand

Two new one-component aluminium-based catalysts for the reaction between epoxides and carbon dioxide have been prepared. The catalysts are composed of aluminium–salen chloride complexes with trialkylammonium groups directly attached to the aromatic rings of the salen ligand. With terminal epoxides, the catalysts induced the formation of cyclic carbonates under mild reaction conditions (25–35 °C; 1–10 bar carbon dioxide pressure). However, with cyclohexene oxide under the same reaction conditions, the same catalysts induced the formation of polycarbonate. The catalysts could be recovered from the reaction mixture and reused.

Highly Active and Robust Metalloporphyrin Catalysts for the Synthesis of Cyclic Carbonates from a Broad Range of Epoxides and Carbon Dioxide

2016 ◽  
Vol 22 (19) ◽  
pp. 6556-6563 ◽  
Author(s):  
Chihiro Maeda ◽  
Junta Shimonishi ◽  
Ray Miyazaki ◽  
Jun-ya Hasegawa ◽  
Tadashi Ema
Keyword(s):  
Carbon Dioxide ◽  
Cyclic Carbonates ◽  
Highly Active ◽  
Metalloporphyrin Catalysts
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