Chlorine-free catalysts for green synthesis of cyclic carbonates from carbon dioxide*
نویسندگان
چکیده
This article provides an overview on recent progress in the green synthesis of cyclic carbonates (CCs) from carbon dioxide (CO2) catalyzed by chlorine-free catalysts. Special emphasis is placed on the synthetic routes and catalyst structures that govern the reactivity and selectivity.
منابع مشابه
Efficient carbonate synthesis under mild conditions through cycloaddition of carbon dioxide to oxiranes using a Zn(salphen) catalyst.
Zn(salphen) complexes are reported as effective, cheap, robust and relatively green catalysts for the cycloaddition of carbon dioxide to terminal epoxides to afford cyclic carbonates in good yields.
متن کاملSynthesis of cyclic carbonates from epoxides and carbon dioxide using bimetallic aluminium(salen) complexes
Over the last six years, highly active catalysts for the synthesis of cyclic carbonates from epoxides and carbon dioxide have been developed. Initial studies showed that bimetallic aluminium(salen) complexes [Al(salen)]2O formed active catalysts and kinetic studies allowed the catalytic cycle to be determined. The catalysts could be immobilized on silica, allowing them to be used in a gas phase...
متن کاملCatalytic Processes for Chemical Conversion of Carbon Dioxide into Cyclic Carbonates and Polycarbonates
Chemical fixation of CO2 has received much attention because CO2 is the most inexpensive and renewable carbon resource from the viewpoint of green chemistry and atom economy. The kinetic and thermodynamic stability of CO2 molecule presents significant challenges in designing efficient chemical transformations based on this potential feedstock. Currently, cyclic carbonates and polycarbonates are...
متن کاملIonic Liquids in Green Carbonate Synthesis
Ionic liquids (ILs), made of relatively large organic cations and inorganic anions, could contribute as solvents and catalysts to green organic synthetic reactions [1-5]. The reaction systems using no organic solvents, dense phase carbon dioxide (supercritical and carbon dioxide-dissolved expanded liquid phases), and/or water are obviously advantageous from environmental viewpoints [1]. ILs wou...
متن کاملSynthesis of Cyclic Carbonates Catalysed by Aluminium Heteroscorpionate Complexes.
New aluminium scorpionate based complexes have been prepared and used for the synthesis of cyclic carbonates from epoxides and carbon dioxide. Bimetallic aluminium(heteroscorpionate) complexes 9-14 were synthesised in very high yields. The single-crystal X-ray structures of 12 and 13 confirm an asymmetric κ(2)-NO-μ-O arrangement in a dinuclear molecular disposition. These bimetallic aluminium c...
متن کامل