Review
Chemistry, Organic
Rana Chatterjee, Swadhapriya Bhukta, Rambabu Dandela
Summary: Ionic liquids have shown great potential in organic transformations, serving as solvents, additives, or catalysts. Superbasic ionic liquids constructed from guanidine and amidine derivatives hold promise in accelerating various organic reactions due to their adjustable properties. These classic ionic liquids with high stability and novel properties have found applications in catalysis, electrochemistry, spectroscopy, and materials science, and have potential environmental impact. Notably, superionic liquids have been widely used in the chemical transformation of CO2. This review provides an overview of the organic syntheses promoted by superionic liquids in recent years.
CURRENT ORGANIC CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Jocasta Avila, Chiara Corsini, Cintia M. Correa, Martin Rosenthal, Agilio Padua, Margarida Costa Gomes
Summary: This Perspective highlights the pathways to prepare porous ionic liquids using easily accessible materials for reduced environmental impact. The study demonstrates that suspensions of porous solids are stable in eutectic mixtures, which indicates their potential in preparing porous ionic liquids. Porous ionic liquids maintain the wide electrochemical window observed in their precursor pure ionic liquids, making them suitable for green electrochemical reactions, especially those involving gases with enhanced solubility in the porous suspensions. Furthermore, their capacity as gas-rich media suggests potential sustainable biomedical and pharmaceutical applications, provided that non-toxic, biocompatible ionic liquids and porous solids are utilized.
Article
Chemistry, Multidisciplinary
Xuantong Sun, Xi Wang, Fengqiang Sun, Mingwei Tian, Lijun Qu, Patsy Perry, Huw Ovens, Xuqing Liu
Summary: A green chemistry strategy has been developed to separate and regenerate waste textiles at the molecular level, aiming to reduce the large amount of waste textiles generated by the fast fashion industry. This strategy also provides a new source of fibers to address fossil fuel reserve shortages caused by chemical fiber industries and global food shortages caused by natural fiber production.
ADVANCED MATERIALS
(2021)
Review
Chemistry, Organic
Aslihan Ayvaz, Sinem Gorkem Demirbas, Ahmet Demirbas, Neslihan Demirbas
Summary: Due to the increasing environmental pollution and its detrimental impact on the ecosystem, scientists have developed new chemical strategies using eco-friendly chemicals, solvents, catalysts, and alternative energy sources. Deep eutectic solvents (DESs) are low-melting mixtures primarily consisting of quaternary ammonium salt and hydrogen-bond acceptors. DESs have advantages such as low toxicity, easy preparation, low cost, biodegradability, low vapor pressure, and recyclability.
CURRENT ORGANIC CHEMISTRY
(2023)
Article
Biochemical Research Methods
Slavica Razic, Slobodan Gadzuric, Tatjana Trtic-Petrovic
Summary: Ionic liquids, known as designer solvents, have unique physicochemical properties and are used in sample pretreatment in analytical sciences. Validating newly proposed analytical methods using ionic liquids is crucial to demonstrate their reliability and accuracy. Additionally, this article discusses potential toxicity of ionic liquids.
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Applied
Mina Rajabi, Jaydee Cabral, Sarah Saunderson, M. Azam Ali
Summary: Chitooligosaccharide (COS), an emerging material carbohydrate polymer, was prepared using a microwave-assisted process. The COS was then used to synthesize COS-poly(ethylene glycol) diacrylate (PEGDA) derivatives through aza-Michael addition. The resulting COS-PEGDA hydrogels showed high biocompatibility and can be potentially used in biomedical applications.
CARBOHYDRATE POLYMERS
(2022)
Article
Engineering, Environmental
Xiaoqing Yuan, Ju Liu, Yanlei Wang, Xingming Jie, Jingyu Qin, Hongyan He
Summary: In this study, a novel dual-responsive emulsion reactor was prepared for the Knoevenagel condensation reaction, using temperature and CO2-responsive ionic liquids as an emulsifier, responder, and catalyst. The emulsion reactor underwent reversible transformations between emulsification and demulsification driven by temperature or CO2, allowing efficient catalytic reactions and easy separation of products and catalysts.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Biochemistry & Molecular Biology
Raul Porcar, Eduardo Garcia-Verdugo, Belen Altava, Maria Isabel Burguete, Santiago V. Luis
Summary: Chiral imidazolium l-prolinate salts have been studied as green and efficient chiral organocatalysts for direct asymmetric aldol reactions at room temperature. The presence of chirality in both the imidazolium cation and prolinate anion plays a significant role in transferring chirality from the organocatalyst to the aldol product. By selecting proper structural elements in the cation and anion, excellent activities, selectivities, and enantioselectivities can be achieved.
Review
Chemistry, Organic
Eusebio Juaristi
Summary: This report summarizes recent developments in the field of asymmetric organocatalysis, focusing on the design and evaluation of diamine analogs of privileged (S)-prolinols as organocatalysts, and the significant improvement of catalytic activity of (S)-proline by solvate ionic liquids and other types of ionic liquids.
Article
Biochemistry & Molecular Biology
Kaushik Naskar, Suvendu Maity, Himadri Sekhar Maity, Chittaranjan Sinha
Summary: The synthesis and structural characterization of Cu-MOF have been successfully conducted, showing a 2D square grid structure containing copper (II). The Cu-MOF exhibits excellent thermal stability and catalytic activity for various organic transformations.
Article
Chemistry, Multidisciplinary
Pankaj Teli, Ayushi Sethiya, Shikha Agarwal
Summary: This study describes a simple, cost-efficient and green protocol for synthesizing biscoumarin and bisdimedone derivatives in high yields through one-pot Knoevenagel-Michael reaction. The use of carbon sulfonic acid as a catalyst allows for the reactions to be conducted in a greener medium with short reaction times and excellent yields.
RESEARCH ON CHEMICAL INTERMEDIATES
(2022)
Article
Electrochemistry
Kei Hashimoto, Ryoichi Tatara, Kazuhide Ueno, Kaoru Dokko, Masayoshi Watanabe
Summary: By designing the polymer network and Li+-ion solvation, we have successfully fabricated polymer gel electrolytes with excellent thermal stability, mechanical reliability, and high conductivity for lithium batteries.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2021)
Review
Chemistry, Multidisciplinary
Lifang Chen, Yuhang Xiong, Hao Qin, Zhiwen Qi
Summary: This review summarizes the recent progress in experimental and theoretical studies on the dehydration of carbohydrates to produce 5-hydroxymethylfurfural (HMF) using ionic liquids (ILs) and deep eutectic solvents (DESs) as catalysts or solvents. It also provides an overview of catalytic transformations of HMF to downstream products using ILs and DESs. The challenges and prospects of ILs and DESs for the production of HMF and its derivatives from biomass are discussed.
Article
Chemistry, Multidisciplinary
Tynchtyk Amatov, Nobuya Tsuji, Rajat Maji, Lucas Schreyer, Hui Zhou, Markus Leutzsch, Benjamin List
Summary: This study reports two highly enantioselective and diastereoselective catalytic Mukaiyama aldol reactions, which directly deliver valuable silyl protected propionaldehyde aldols with control over stereochemistry. A single atom modification in the catalyst core leads to a dramatic switch in enantioselectivity of the aldehyde through unconventional C-H hydrogen bonding interactions.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2021)
Review
Chemistry, Organic
Biswajita Baruah, Mohit L. Deb
Summary: This review focuses on catalyst- and additive-free C-C bond forming reactions from 2005 to present, highlighting their importance, economic and environmentally friendly nature, easy separation of products, and simplicity of operation. Additionally, it discusses various reactions such as C-H functionalizations and coupling reactions, aiming to inspire readers to contribute to a sustainable future.
ORGANIC & BIOMOLECULAR CHEMISTRY
(2021)
