scholarly journals Tandem Reactions Based on the Cyclization of Carbon Dioxide and Propargylic Alcohols: Derivative Applications of α-Alkylidene Carbonates

Catalysts ◽  
2022 ◽  
Vol 12 (1) ◽  
pp. 73
Author(s):  
Bowen Jiang ◽  
Xiangyu Yan ◽  
Yong Xu ◽  
Natalya Likhanova ◽  
Heriberto Díaz Velázquez ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Sustainable Chemistry ◽  
Tandem Reactions ◽  
Cyclic Carbonates ◽  
Co2 Utilization ◽  
Propargylic Alcohols ◽  
The Past ◽  
Energy Environment ◽  
Potential Methods ◽  
Carbon Dioxide Co2

As a well-known greenhouse gas, carbon dioxide (CO2) has attracted increasing levels of attention in areas of energy, environment, climate, etc. Notably, CO2 is an abundant, nonflammable, and renewable C1 feedstock in view of chemistry. Therefore, the transformation of CO2 into organic compounds is an extremely attractive research topic in modern green and sustainable chemistry. Among the numerous CO2 utilization methods, carboxylative cycloaddition of CO2 into propargylic alcohols is an ideal route due to the corresponding products, α-alkylidene cyclic carbonates, which are a series of highly functionalized compounds that supply numerous potential methods for the construction of various synthetically and biologically valuable agents. This cyclization reaction has been intensively studied and systematically summarized, in the past years. Therefore, attention has been gradually transferred to produce more derivative compounds. Herein, the tandem reactions of this cyclization with hydration, amination, alcoholysis, and isomerization to synthesize α-hydroxyl ketones, oxazolidinones, carbamates, unsymmetrical carbonates, tetronic acids, ethylene carbonates, etc. were systematically reviewed.

scholarly journals Cu(I)/Ionic Liquids Promote the Conversion of Carbon Dioxide into Oxazolidinones at Room Temperature

Molecules ◽  
2019 ◽  
Vol 24 (7) ◽  
pp. 1241 ◽  
Author(s):  
Jikuan Qiu ◽  
Yue Zhao ◽  
Yuling Zhao ◽  
Huiyong Wang ◽  
Zhiyong Li ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Noble Metal ◽  
Room Temperature ◽  
Ambient Pressure ◽  
Sustainable Chemistry ◽  
One Pot ◽  
Propargylic Alcohols ◽  
Noble Metal Catalysts ◽  
Three Component Reaction ◽  
Carbon Dioxide Co2

Recently, the efficient chemical fixation of carbon dioxide (CO2) into high value chemicals without using noble metal catalysts has become extremely appealing from the viewpoint of sustainable chemistry. In this work, a one-pot three component reaction of propargylic alcohols, anines and CO2 that can proceed in an atom economy and environmentally benign manner by combination of CuI and tetrabutylphosphonium imidazol ([P4444][Im]) as a catalyst was described. Catalysis studies indicate that this catalytic system is an effective catalyst for the conversion of CO2 into oxazolidinones at room temperature and ambient pressure without any solvent. The results provide a useful way to design novel noble metal-free catalyst systems for the transformation of CO2 into other valuable compounds.

Hydroxyl-anchored covalent organic crown-based polymers for CO2 fixation into cyclic carbonates at mild condition

2021 ◽  
Author(s):  
Yongjing Hao ◽  
Xiuli Yan ◽  
Tao Chang ◽  
Xiaohuan Liu ◽  
Lianwei Kang ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Mild Condition ◽  
Co2 Fixation ◽  
Cyclic Carbonates ◽  
Organic Polymers ◽  
Carbon Dioxide Co2

The covalent organic polymers (COPs) are a kind of promising materials for carbon dioxide (CO2) reutilization. Herein, a series of covalent organic crown-based polymers (COCP-H, COCP-OH, COCP-CH3, COCP-Bu) were designed...

Carboxylative cyclization of propargylic alcohols with carbon dioxide: A facile and Green route to α-methylene cyclic carbonates

2020 ◽  
Vol 38 ◽  
pp. 220-231 ◽  
Author(s):  
Mingli Li ◽  
Shahrzad Abdolmohammadi ◽  
Mir Saleh Hoseininezhad-Namin ◽  
Farnaz Behmagham ◽  
Esmail Vessally
Keyword(s):  
Carbon Dioxide ◽  
Cyclic Carbonates ◽  
Propargylic Alcohols ◽  
Green Route

The Influence of Cryogenic Coolants in Machining of Ti–6Al–4V

2013 ◽  
Vol 135 (3) ◽  
Author(s):  
B. Dilip Jerold ◽  
M. Pradeep Kumar
Keyword(s):  
Carbon Dioxide ◽  
Tool Wear ◽  
Cutting Forces ◽  
Cutting Temperature ◽  
Chip Morphology ◽  
Cutting Fluids ◽  
Cryogenic Machining ◽  
The Past ◽  
Carbon Dioxide Co2 ◽  
Made In

Machining of titanium alloy Ti–6Al–4V is a challenging task because of the greatly increased cutting temperature that results in short tool life. Numerous attempts have been made in the past by employing various cutting fluids for machining purpose, including liquid nitrogen (LN2) as the cryogenic coolant. This study deals with the influence of cryogenic coolants, especially LN2 and carbon dioxide (CO2), in machining of Ti–6Al–4V and its effects on cutting temperature, cutting forces, surface roughness, chip morphology, and tool wear. The results obtained in cryogenic machining are compared with that of dry and wet machining. Cutting temperature was reduced to an extent of 36% and 47% in cryogenic CO2 machining and cryogenic LN2 machining in comparison with wet machining. The application of CO2 produced reduced cutting forces up to 24% and improved surface finish up to 48% compared to cryogenic LN2 machining. It also produced better chip control and minimized tool wear than dry, wet, and LN2 machining.

Phosphine catalysed synthesis of unsaturated cyclic carbonates from carbon dioxide and propargylic alcohols

1989 ◽  
Vol 30 (30) ◽  
pp. 3981-3982 ◽  
Author(s):  
Jean Fournier ◽  
Christian Bruneau ◽  
Pierre H Dixneuf
Keyword(s):  
Carbon Dioxide ◽  
Cyclic Carbonates ◽  
Propargylic Alcohols

In-situ cleavage and rearrangement synthesis of an easy-obtained and high stable Cu(II)-based MOF for efficient heterogeneous catalysis of carbon dioxide conversion

CrystEngComm ◽  
2021 ◽  
Author(s):  
Lan Qin ◽  
Yu Pan ◽  
Lei Yu ◽  
Ranran Huai ◽  
Lu Yang ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Heterogeneous Catalysis ◽  
Metal Organic Frameworks ◽  
Chemical Fixation ◽  
Cyclic Carbonates ◽  
Carbon Dioxide Conversion ◽  
Metal Organic ◽  
Carbon Dioxide Co2

Cycloaddition into cyclic carbonates has been attracted substantial attentions for metal-organic frameworks based catalysis of carbon dioxide (CO2) chemical fixation, not only due to the contributions that solving the environmental...

Acidification: Background and History

2011 ◽  
Author(s):  
Jean-Pierre Gattuso ◽  
Lina Hansson
Keyword(s):  
Carbon Dioxide ◽  
Large Scale ◽  
Industrial Revolution ◽  
Climatic Changes ◽  
Human Beings ◽  
Terrestrial Biosphere ◽  
Fourfold Increase ◽  
The Past ◽  
Rate Of Increase ◽  
Carbon Dioxide Co2

The ocean and the atmosphere exchange massive amounts of carbon dioxide (CO2). The pre-industrial influx from the ocean to the atmosphere was 70.6 Gt C yr –1 , while the flux in the opposite direction was 70 Gt C yr –1 ( IPCC 2007 ). Since the Industrial Revolution an anthropogenic flux has been superimposed on the natural flux. The concentration of CO2 in the atmosphere, which remained in the range of 172–300 parts per million by volume (ppmv) over the past 800 000 years ( Lüthi et al. 2008 ), has increased during the industrial era to reach 387 ppmv in 2009. The rate of increase was about 1.0% yr –1 in the 1990s and reached 3.4% yr –1 between 2000 and 2008 ( Le Quéré et al. 2009 ). Future levels of atmospheric CO2 mostly depend on socio-economic parameters, and may reach 1071 ppmv in the year 2100 ( Plattner et al. 2001 ), corresponding to a fourfold increase since 1750. As pointed out over 50 years ago, ‘human beings are now carrying out a large scale geophysical experiment of a kind that could not have happened in the past nor be reproduced in the future’ ( Revelle and Suess 1957 ). Anthropogenic CO2 has three fates. In the years 2000 to 2008, about 29% was absorbed by the terrestrial biosphere and 26% by the ocean, while the remaining 45% remained in the atmosphere ( Le Quéré et al. 2009 ). The accumulation of CO2 in the atmosphere increases the natural greenhouse effect and generates climate changes ( IPCC 2007 ). It is estimated that the surface waters of the oceans have taken up 118 Pg C, or about 25% of the carbon generated by human activities since 1800 ( Sabine et al. 2004 ). By taking CO2 away from the atmosphere, the oceanic and terrestrial sinks mitigate climatic changes. Should their efficiency decrease, more CO2 would remain in the atmosphere, generating larger climate perturbations. This book has four main groups of chapters.

scholarly journals New Trends in the Conversion of CO2 to Cyclic Carbonates

Catalysts ◽  
2020 ◽  
Vol 10 (5) ◽  
pp. 479 ◽  
Author(s):  
Erivaldo J.C. Lopes ◽  
Ana P.C. Ribeiro ◽  
Luísa M.D.R.S. Martins
Keyword(s):  
Carbon Dioxide ◽  
Global Warming ◽  
Co2 Emissions ◽  
Chemical Industry ◽  
Reaction Mechanisms ◽  
Fine Chemicals ◽  
Cyclic Carbonates ◽  
Atom Economy ◽  
Carbon Dioxide Co2 ◽  
Meaningful Measure

This work concerns recent advances (mainly in the last five years) in the challenging conversion of carbon dioxide (CO2) into fine chemicals, in particular to cyclic carbonates, as a meaningful measure to reduce CO2 emissions in the atmosphere and subsequent global warming effects. Thus, efficient catalysts and catalytic processes developed to convert CO2 into different chemicals towards a more sustainable chemical industry are addressed. Cyclic carbonates can be produced by different routes that directly, or indirectly, use carbon dioxide. Thus, recent findings on CO2 cycloaddition to epoxides as well as on its reaction with diols are reviewed. In addition, indirect sources of carbon dioxide, such as urea, considered a sustainable process with high atom economy, are also discussed. Reaction mechanisms for the transformations involved are also presented.

Sign in / Sign up

Export Citation Format

Share Document