Article
Chemistry, Physical
Chetna Yadav, Soumen Payra, Jarugu Narasimha Moorthy
Summary: A new viologen-based ionic porous organic polymer (IPOP) has been developed and shown to be an effective heterogeneous catalyst for organic transformations, such as Michael addition and synthesis of biscoumarins. The IPOP exhibits properties similar to phase-transfer quaternary ammonium salt and can be recycled for multiple catalytic cycles without loss of activity.
JOURNAL OF CATALYSIS
(2022)
Article
Chemistry, Organic
Hao Liu, Meng-Ling Lin, Yin-Jun Chen, Yin-Hui Huang, Lin Dong
Summary: A Rh(iii)-catalyzed three-component C-H bond functionalization protocol has been successfully used to synthesize complex polycyclic BINOL derivatives, with the in situ formation of intermediate amides from aldehydes and amines. This high efficiency strategy allows for rapid and selective synthesis of diverse BINOL compounds in a step-economical manner from three readily accessible starting materials in one-pot.
ORGANIC CHEMISTRY FRONTIERS
(2021)
Article
Chemistry, Applied
Fan Yang, Yuta Saiki, Koichi Nakaoka, Tadashi Ema
Summary: This study reported the solvent-free N-formylation reaction catalyzed by Cu(OAc)(2), which used CO2 and phenylsilane to react with 2-(methylamino)pyridine and produced N-methyl-N-(2-pyridyl)formamide. The improved solubility of copper ion and enhanced nucleophilicity of acetate ion played positive roles in the activation of phenylsilane.
ADVANCED SYNTHESIS & CATALYSIS
(2023)
Article
Chemistry, Organic
Alessandra Casnati, Dawid Lichosyt, Bruno Lainer, Lukas Veth, Pawel Dydio
Summary: The research presents a multicatalytic method for converting alkenes, unsaturated aliphatic alcohols, and aryl boronic acids into secondary benzylic alcohols with high stereoselectivity. Prochiral allylic alcohols can also be selectively transformed into different stereoisomers of the product.
Article
Environmental Sciences
Zain Iqbal, Zufishan Shamair, Muhammad Usman, Mazhar Amjad Gilani, Muhammad Yasin, Sidra Saqib, Asim Laeeq Khan
Summary: A facile approach was used to synthesize ionic liquid in a porous metal organic framework, leading to enhanced CO2 separation performance.
Article
Chemistry, Multidisciplinary
Thi Tuyet Thuy Vu, Shentan Liu, Mantas Jonusis, Simona Jonusiene, Jinsik Choi, Riko Kawano, Nicola Rehnberg, Rajni Hatti-Kaul, Sang-Hyun Pyo
Summary: This study focuses on the characterization of NaCl-induced enhancement of H+ exchange catalysis and preparation of the renewable C6 platform chemical, 5-(hydroxymethyl)-furfural (5-HMF), through dehydration of fructose and glucose, C6-sugars, utilizing a heterogeneous catalyst. The addition of NaCl resulted in a decrease in the pH of both water and organic solvents, leading to improved H+ exchange on cation exchangers and facilitated a reduction in catalyst quantity and significantly enhanced the dehydration of fructose and glucose to 5-HMF. The concept of NaCl-induced enhancement of H+ exchange catalysis can be extended to various organic synthesis reactions.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2023)
Review
Chemistry, Organic
Anand Kumar Arya, Kritika Arya, Sudesh Kumar
Summary: Ionic liquid-promoted one-pot synthetic methodologies are important for accessing diverse heterocycles easily. Functionalized ionic liquids with specific properties are of great importance for one-pot syntheses. The use of ionic liquid supported magnetic nanoparticles has gained attention as viable alternatives for homogeneous catalysts. This review discusses the potential of functionalized ionic liquid immobilized magnetic Fe3O4 nanoparticles for the domino synthesis of diverse heterocyclic systems.
MINI-REVIEWS IN ORGANIC CHEMISTRY
(2023)
Article
Engineering, Environmental
Leizhi Zheng, Guoqiang Yang, Jia Liu, Xingbang Hu, Zhibing Zhang
Summary: This study introduces an effective method for synthesizing various carbamates from amines, alcohol, and CO2, proposing two pathways to achieve this process and allowing for the easy recovery and reuse of DBU.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Multidisciplinary Sciences
Gaurav Yadav, Nidhi Yadav, Md Ahmaruzzaman
Summary: In this study, a solid acid catalyst was synthesized using low temperature hydrothermal carbonization method. The catalyst exhibited enhanced sulfonic active sites and high acid density, making it effective for biodiesel synthesis at low temperatures. Various techniques were used to determine the chemical composition and morphology of the catalyst. The conversion of oleic acid to methyl oleate reached 96.4% under optimized conditions, with low activation energy. The presence of porous structure and sulfonic groups contributed to the high activity of the catalyst. The synthesis of biodiesel was confirmed using GC-MS and NMR. The catalyst showed good reusability, with a high transformation rate even after four consecutive cycles.
SCIENTIFIC REPORTS
(2022)
Article
Chemistry, Physical
Jixia Wang, Yabing Tian, Shiguo Zhang, Yan Zhang
Summary: This study successfully synthesized chiral porous poly(ionic liquid)s (CPPILs) containing chiral salen Mn(III) complex, which showed excellent catalytic performance in asymmetric synthesis. These catalysts possess large specific surface area, abundant pore structure, and ionic active sites, and can efficiently catalyze the epoxidation of styrene. Moreover, these catalysts exhibit good stability and recyclability.
APPLIED CATALYSIS A-GENERAL
(2022)
Article
Chemistry, Organic
Baofu Zhu, Jiaming He, Kai Zou, Anquan Li, Chen Zhang, Jiaji Zhao, Hua Cao
Summary: This study established a three-component reaction catalyzed by base, involving ynals, isocyanates, amines, and alcohols. The strategy enables a wide range of substrates and provides a simple process for the preparation of diverse pyridine derivatives with good yields and high regioselectivities.
JOURNAL OF ORGANIC CHEMISTRY
(2023)
Article
Chemistry, Physical
Antonio Leyva-Perez, Cristina Bilanin, Matea Bacic, Rossella Greco
Summary: The study reveals that commercial ionic liquids can stabilize microdroplets of water with pH < 0 and pH > 14 simultaneously and without any additive, and this micro-structured liquid medium catalyzes organic reactions.
Article
Engineering, Chemical
Mohammad Amin Alaei Shahmirzadi, Ali Kargari, Takeshi Matsuura
Summary: Novel organic/inorganic hybrid ionogels with high ionic liquid (IL) loading were synthesized using a one-pot sol-gel method, which exhibited desirable properties and showed promising potential for propylene/propane separation.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Chemistry, Applied
Smitha George, Krishnapillai Sreekumar
Summary: The synthesized palladium complex of dendronized amine polymer with ethylene glycol-initiated polyepichlorohydrin as core exhibited good performance in benzoxazole synthesis. Higher generation dendronized polymer showed better catalytic activity compared to lower generation dendronized polymers, and dendronized polymers outperformed dendrigraft polymers as catalysts. Reusability of the catalyst was confirmed through five cycles with good yields.
APPLIED ORGANOMETALLIC CHEMISTRY
(2021)
Review
Chemistry, Multidisciplinary
Ria Ayu Pramudita, Ken Motokura
Summary: This article presents the current development of utilizing hydrosilanes in the chemical reduction of CO2, with a focus on organic catalysts. The use of heterogeneous organocatalysts with precisely designed active sites is emphasized for their recyclability and higher efficiency in these transformations.
