Highly diastereo- and enantioselective Michael addition of 3-substituted benzofuran-2(3H)-ones to 4-oxo-enoates catalyzed by lanthanide(iii) complexes

Wang, Zhen; Yao, Qingzhao; Kang, Tengfei; Feng, Juhua; Liu, Xiaohua; Lin, Lili; Feng, Xiaoming

doi:10.1039/c4cc01499e

Cited by 79 publications

(88 citation statements)

References 37 publications

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“…Moreover, CO 2 absorption into, and release from these IL could be repeatedly cycled 25 times with high absorption capacity. [8][9][10][11][12] Nonetheless, these functionalized ILs were not easy to synthesize and purify.…”

Section: Ionic Liquids -Impact On Old and New Energy Technologiesmentioning

confidence: 99%

Ionic liquids for energy, materials, and medicine

et al. 2014

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As highlighted by the recent ChemComm web themed issue on ionic liquids, this field continues to develop beyond the concept of interesting new solvents for application in the greening of the chemical industry. Here some current research trends in the field will be discussed which show that ionic liquids research is still aimed squarely at solving major societal issues by taking advantage of new fundamental understanding of the nature of these salts in their low temperature liquid state. This article discusses current research trends in applications of ionic liquids to energy, materials, and medicines to provide some insight into the directions, motivations, challenges, and successes being achieved with ionic liquids today.

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Section: Ionic Liquids -Impact On Old and New Energy Technologiesmentioning

confidence: 99%

Ionic liquids for energy, materials, and medicine

et al. 2014

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“…6 Among the many possibilities, ionic liquids (ILs) have been extensively investigated as promising candidates because of their several advantageous properties to substitute the traditional scrubbing agents for reversible CO 2 capture. 7 In this regard, a variety of ILs containing pyridinium, imidazolium, guanidinium, amine-functionalized cation and inorganic/organic anion have been examined and the basicity of the anion has been identified to play a major role upon CO 2 capture [8][9][10][11][12][13][14] following semimolar or multi-molar mechanism. 15,16 However, the multi-molar CO 2 absorption in ILs became less attractive when converted to the gravimetric uptake values.…”

Section: Introductionmentioning

confidence: 99%

Intermolecular interactions upon carbon dioxide capture in deep-eutectic solvents

Shukla

Mikkola

2018

Phys. Chem. Chem. Phys.

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Herein we report the CO2 uptake in potential deep-eutectic solvents (DESs) formed between hydrogen bond acceptors (HBAs) such as monoethanolammonium chloride ([MEA·Cl]), 1-methylimidazolium chloride ([HMIM·Cl]) and tetra-n-butylammonium bromide ([TBAB]) and hydrogen bond donors (HBDs) like ethylenediamine ([EDA]), diethylenetriamine ([DETA]), tetraethylenepentamine ([TEPA]), pentaethylenehexamine ([PEHA]), 3-amino-1-propanol ([AP]) and aminomethoxypropanol ([AMP]) and analyzed the outcome in terms of the specific polarity parameters. Among various combinations of HBAs and HBDs, [MEA·Cl][EDA]-, [MEA·Cl][AP]-, [HMIM·Cl][EDA]- and [HMIM·Cl][AP] showed excellent CO2 uptake which was further improved upon increasing the mole ratio of HBA : HBD from 1 : 1 to 1 : 4. The lowest CO2 uptake in [MEA·Cl][PEHA] (12.7 wt%) and [HMIM·Cl][PEHA] (8.4 wt%) despite the highest basicity of [PEHA] infers that the basicity is not the sole criteria for guiding the CO2 uptake but, in reality, CO2 capture in a DES relies on the interplay of H-bonding interactions between each HBA and HBD. The role of HBAs in guiding CO2 uptake was more prominent with weak HBDs such as [TEPA] and [PEHA]. The speciation of absorbed CO2 into carbamate, carbonate, and bicarbonate was favorable in DES characterized by comparable hydrogen bond donor acidity (α) and hydrogen bond acceptor basicity (β) values, whereas the conversion of carbamate to carbonate/bicarbonate was observed to depend on α. The addition of water in DES resulted in lower CO2 uptake due to the decreased basicity (β).

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“…Unique physicochemical properties of ionic liquids (ILs) such as high thermal stability, low vapor pressure, and tunable properties make ILs suitable for CO 2 absorption. 2,3 Functionalized ILs, such as amine, 4,5 azolium, 6 phenolate, 7 and carbene-based ILs 8 were reported as potential CO 2 absorption solvents owing to their electron-rich property, or the basicity of ILs. High CO 2 absorption capacity is one of the performance evaluations of ILs.…”

Section: Introductionmentioning

confidence: 99%

Cooperative CO₂ absorption by amino acid-based ionic liquids with balanced dual sites

Chen

Luo

et al. 2020

RSC Adv.

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Highly diastereo- and enantioselective Michael addition of 3-substituted benzofuran-2(3H)-ones to 4-oxo-enoates catalyzed by lanthanide(iii) complexes

Cited by 79 publications

References 37 publications

Ionic liquids for energy, materials, and medicine

Ionic liquids for energy, materials, and medicine

Intermolecular interactions upon carbon dioxide capture in deep-eutectic solvents

Cooperative CO₂ absorption by amino acid-based ionic liquids with balanced dual sites

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Highly diastereo- and enantioselective Michael addition of 3-substituted benzofuran-2(3H)-ones to 4-oxo-enoates catalyzed by lanthanide(iii) complexes

Cited by 79 publications

References 37 publications

Ionic liquids for energy, materials, and medicine

Ionic liquids for energy, materials, and medicine

Intermolecular interactions upon carbon dioxide capture in deep-eutectic solvents

Cooperative CO2 absorption by amino acid-based ionic liquids with balanced dual sites

Contact Info

Product

Resources

About

Cooperative CO₂ absorption by amino acid-based ionic liquids with balanced dual sites