scholarly journals Recent developments in organocatalysed transformations of epoxides and carbon dioxide into cyclic carbonates

2021 ◽  
Author(s):  
Liping Guo ◽  
Katie J. Lamb ◽  
Michael North
Keyword(s):  
Carbon Dioxide ◽  
Cyclic Carbonates ◽  
Metal Free ◽  
Recent Developments ◽  
Catalyst Systems

The synthesis of cyclic carbonates from epoxides and carbon dioxide using metal-free catalyst systems is critically reviewed.

Niobium(v) chloride and imidazolium bromides as efficient dual catalyst systems for the cycloaddition of carbon dioxide and propylene oxide

2014 ◽  
Vol 4 (6) ◽  
pp. 1638-1643 ◽  
Author(s):  
Michael E. Wilhelm ◽  
Michael H. Anthofer ◽  
Robert M. Reich ◽  
Valerio D'Elia ◽  
Jean-Marie Basset ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Catalytic Activity ◽  
Propylene Oxide ◽  
Catalyst System ◽  
Cyclic Carbonates ◽  
Imidazolium Salt ◽  
Catalyst Systems

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.

Quaternary ammonium hydroxide as a metal-free and halogen-free catalyst for the synthesis of cyclic carbonates from epoxides and carbon dioxide

2015 ◽  
Vol 5 (4) ◽  
pp. 2314-2321 ◽  
Author(s):  
Tadashi Ema ◽  
Kazuki Fukuhara ◽  
Takashi Sakai ◽  
Masaki Ohbo ◽  
Fu-Quan Bai ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Quaternary Ammonium ◽  
Ammonium Hydroxide ◽  
Solvent Free ◽  
Cyclic Carbonates ◽  
Tetrabutylammonium Hydroxide ◽  
Metal Free ◽  
Good Catalyst ◽  
Solvent Free Conditions ◽  
Halogen Free

Tetrabutylammonium hydroxide (TBAH) acted as a good catalyst for the formation of cyclic carbonates from epoxides and CO2 under solvent-free conditions.

State-of-the-art catechol porphyrin COF catalyst for chemical fixation of carbon dioxide via cyclic carbonates and oxazolidinones

2016 ◽  
Vol 6 (15) ◽  
pp. 6152-6158 ◽  
Author(s):  
Vitthal Saptal ◽  
Digambar Balaji Shinde ◽  
Rahul Banerjee ◽  
Bhalchandra M. Bhanage
Keyword(s):  
Carbon Dioxide ◽  
Transition Metal ◽  
State Of The Art ◽  
Value Added ◽  
Chemical Fixation ◽  
Cyclic Carbonates ◽  
Metal Free ◽  
Highly Porous ◽  
Fixation Of Carbon Dioxide

A highly porous, crystalline catechol porphyrin COF was synthesized and applied as an organocatalyst for the fixation of carbon dioxide to synthesize value-added chemicals such as cyclic carbonates and oxazolidinones under solvent and transition-metal-free conditions.

scholarly journals Hypercrosslinked Ionic Polymers with High Ionic Content for Efficient Conversion of Carbon Dioxide into Cyclic Carbonates

Catalysts ◽  
2022 ◽  
Vol 12 (1) ◽  
pp. 62
Author(s):  
Xu Liao ◽  
Baoyou Pei ◽  
Ruixun Ma ◽  
Lingzheng Kong ◽  
Xilin Gao ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Specific Surface ◽  
Surface Area ◽  
Specific Surface Area ◽  
Reaction Times ◽  
Large Specific Surface Area ◽  
Cyclic Carbonates ◽  
Ionic Polymers ◽  
Ionic Content ◽  
Metal Free

The effective conversion of carbon dioxide (CO2) into cyclic carbonates requires porous materials with high ionic content and large specific surface area. Herein, we developed a new systematic post-synthetic modification strategy for synthesizing imidazolium-based hypercrosslinked ionic polymers (HIPs) with high ionic content (up to 2.1 mmol g−1) and large specific surface area (385 m2 g−1) from porous hypercrosslinked polymers (HCPs) through addition reaction and quaternization. The obtained HIPs were efficient in CO2 capture and conversion. Under the synergistic effect of high ionic content, large specific surface area, and plentiful micro/mesoporosity, the metal-free catalyst [HCP-CH2-Im][Cl]-1 exhibited quantitative selectivities, high catalytic yields, and good substrate compatibility for the conversion of CO2 into cyclic carbonates at atmospheric pressure (0.1 MPa) in a shorter reaction time in the absence of cocatalysts, solvents, and additives. High catalytic yields (styrene oxide, 120 °C, 8 h, 94% yield; 100 °C, 20 h, 93% yield) can be achieved by appropriately extending the reaction times at low temperature, and the reaction times are shorter than other porous materials under the same conditions. This work provides a new strategy for synthesizing an efficient metal-free heterogeneous catalyst with high ionic content and a large specific surface area from HCPs for the conversion of CO2 into cyclic carbonates. It also demonstrates that the ionic content and specific surface area must be coordinated to obtain high catalytic activity for CO2 cycloaddition reaction.

Catalysis of carbon dioxide and oxetanes to produce aliphatic polycarbonates

2020 ◽  
Vol 22 (22) ◽  
pp. 7707-7724
Author(s):  
Gulzar A. Bhat ◽  
Ming Luo ◽  
Donald J. Darensbourg
Keyword(s):  
Carbon Dioxide ◽  
Ring Opening ◽  
Ring Opening Polymerization ◽  
Cyclic Carbonates ◽  
Metal Free

This review summarizes the literature for the coupling of CO2 and oxetanes utilizing a broad range of metal and metal-free catalysts for the production of copolymers either directly or via ring-opening polymerization of preformed cyclic carbonates.

Insights into the Solubility of Carbon Dioxide in Grafted Mesoporous Silica for the Catalytic Synthesis of Cyclic Carbonates by Nanoconfinement

2021 ◽  
Author(s):  
Shahab Boroun ◽  
Abolfazl Alizadeh Sahraei ◽  
Abdol Hadi Mokarizadeh ◽  
Houshang Alamdari ◽  
Frédéric-Georges Fontaine ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Mesoporous Silica ◽  
Catalytic Synthesis ◽  
Cyclic Carbonates
Sign in / Sign up

Export Citation Format

Share Document