Editorial Material
Chemistry, Physical
D. Bradley G. Williams, Iurii Bodachivskyi
Summary: This comment points out misinterpreted data related to the reported synthesis of Bronsted acidic ionic liquids for the dissolution of chitosan. Through various analyses, it is demonstrated that such ionic liquids are unlikely to be produced.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Energy & Fuels
Jian Chen, Hongyan Wang, Lili Deng, Hui Wang, Zengxi Li
Summary: By studying different ionic liquid catalysts, it was found that [TENBs][CF3SO3] exhibited the best performance, and composite ILs could significantly improve catalytic activity and selectivity. The catalytic behaviors of these ILs were characterized by spectroscopic analysis and Gaussian simulation, demonstrating the importance of bond dissociation enthalpy and binding energy for efficient isobutene oligomerization.
Article
Chemistry, Physical
Tao Zhang, Dan Wang, Lianzheng Zhang, Dongmei Xu, Jun Gao, Yixin Ma, Yinglong Wang
Summary: Three N-alkyl-2-pyrrolidone based bronsted acidic ionic liquids were used as denitrogenation agents to remove quinoline from coal-based product model mixtures. The denitrogenation performance and the interactions between the ionic liquids and quinoline were evaluated.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Biochemistry & Molecular Biology
Hongfei Ni, Yiwei Zhang, Chuhong Zong, Zhengbo Hou, Hang Song, Yong Chen, Xuesong Liu, Tengfei Xu, Yingjie Luo
Summary: In this study, new tropine-based functionalized acidic ionic liquids (FAILs) were synthesized and demonstrated excellent catalytic performance in the synthesis of aspirin. The ionic liquid [Trps][OTs] exhibited high yield and selectivity, proving its potential as an ideal green solvent for esterification reactions and a suitable substitute for traditional catalysts.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Chemistry, Multidisciplinary
Masoomeh Norouzi, Maryam Khanmoradi
Summary: It is notable that Bronsted acidic ionic liquids (BAILs) have multiple advantages over mineral acids. A magnetic BAILs catalyst (Fe3O4@CTC@[BisPy][HC2O2]) was successfully developed and showed excellent catalytic performance in the synthesis of heterocyclic compounds. Moreover, it remained highly active even after multiple recycling.
RESEARCH ON CHEMICAL INTERMEDIATES
(2023)
Article
Chemistry, Organic
Ryukichi Takagi, Yuichiro Sakai, Duyen Thi Duong
Summary: A binaphthyl derivative with bis(trifluoromethanesulfonimide) (BSI) moiety was developed as a novel Bronsted acid, showing strong acidity in computational prediction. BSI efficiently catalyzed the hydroamination of alkenyl amines and hydroalkoxylation of alkenyl alcohols in HFIP, with adjacent sulfonimide groups playing a crucial role in enhancing acidity.
Article
Biochemistry & Molecular Biology
Ting He, Cheng-Bin Hong, Peng-Chong Jiao, Heng Xiang, Yan Zhang, Hua-Qiang Cai, Shuang-Long Wang, Guo-Hong Tao
Summary: The study systematically examined the Bronsted acidity of [AAE]X PILs in green solvents and found that the cationic structures had little effect on the acidity, while the anions had no effect. Four different methods were used to determine the acidic strength, including the overlapping indicator method, potential titration method, Hammett method, and DFT method. These methods were reliable for assessing the acidity of [AAE]X.
Article
Chemistry, Physical
Rolf Zeissler, Florian Pabst, Till Boehmer, Thomas Blochowicz
Summary: The shape of the structural relaxation peak in the susceptibility spectra of liquids provides important information about molecular mobilities and dynamic heterogeneity. Recent studies show a generic shape of this peak near the glass transition temperature, reducing the information contained in the peak shape. At higher temperatures, the peak shape varies strongly between different liquids. In this study, we investigate the influence of intramolecular dynamics on the peak shape at these temperatures using depolarized light scattering and dielectric spectroscopy.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Article
Chemistry, Physical
Mohsen Bakhtiarian, Mohammad Mehdi Khodaei
Summary: In this study, a pectin-supported dual acidic pyridinium ionic liquid catalyst was developed for the efficient synthesis of pyrazole derivatives. The catalyst exhibited remarkable catalytic activity and good recyclability in the multi-component reaction.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Chemistry, Physical
Zaheer Ramjhan, David Lokhat, Mohammed B. Alshammari, Muthipeedika Nibin Joy, Akil Ahmad
Summary: Hydrophobic trioctylammonium-based ionic liquids were synthesized and characterized, showing promising potential for heavy metal extraction. Among the ILs tested, [HTOA][adipate] demonstrated superior extraction efficiencies for Cd(II), Cu(II), and Zn(II), and could be effectively regenerated using EDTA solution.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Energy & Fuels
Chao Li, Jian Zhao, Huixin Tong, Xiaodong Fan, Xinjie Fang, Yuli Sha, Zhizhong Sun, Wenyi Chu
Summary: In this study, a series of SO3H-functionalized ionic liquids were designed and synthesized for the catalytic conversion of wheat straw to ethyl levulinate. Among them, SimIL-6 showed good catalytic performance and could be reused multiple times.
Review
Chemistry, Physical
Shuyu Wan, Ouwen Xu, Xiashi Zhu
Summary: MOF@ILs, a new type of composite material combining metal-organic framework (MOF) with ionic liquids, has unique physical and chemical properties suitable for solid-phase extraction. This paper reviews the synthesis methods and applications of MOF@ILs composites in solid-phase extraction, as well as its future development prospects.
Article
Chemistry, Multidisciplinary
A. V. Vorotyntsev, A. N. Markov, A. A. Kapinos, A. N. Petukhov, A. A. Atlaskin, A. A. Golovacheva, I. V. Vilkov, P. A. Yunin, V. M. Vorotyntsev, I. V. Vorotyntsev
Summary: The method of induction flow levitation was used for the first time to synthesize porous sorbents based on silicon dioxide, enabling the direct synthesis of various types of silica in a continuous mode with high productivity. The developed method allowed for the evaporation of atoms from the silicon sample and the synthesis of catalytic systems based on ionic liquids with high catalytic activity. This research provides a promising method for the production of catalyst supports with high surface areas and functionalization possibilities.
MATERIALS TODAY CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Pavankumar Prabhala, Suraj M. Sutar, Rajesh G. Kalkhambkar, Yeon T. Jeong
Summary: An efficient and facile method for the synthesis of alpha-arylated N-heteroarenes using Imidazolium based ionic liquids as acid promoter and solvent under aerobic conditions was developed. This methodology successfully provided various electron-rich and electron-deficient arylated N-heteroarenes in good to excellent yields without the use of metals or peroxides. It was also used as a key step in the total synthesis of Menisporphine & Daurioxoisoporphine C, alkaloids of the oxoisoaporphine class.
Article
Chemistry, Physical
Yangfeng Xia, Changbo Lu, Yaohui Wang, Jinmao Chen, Wanli Xu, Gaojun An, Yanqiang Zhang
Summary: Bronsted ionic liquids (BILs) were designed and applied to catalyze the intramolecular cyclization of ketazines to synthesize 2-pyrazoline derivatives. The optimal conditions resulted in high conversion rate and selectivity of the reaction. The steric hindrance of the R group in ketazines was found to be a significant factor affecting the cyclization activities. Density functional theory calculations provided insights into the catalytic mechanism of the ionic liquids.
JOURNAL OF MOLECULAR STRUCTURE
(2024)
Article
Chemistry, Organic
Faiza Diaba, Gisela Trenchs
Summary: The first violet light-mediated synthesis of gamma- and delta-lactams from N-alkenyl trichloroacetamides is reported in this paper. The reactions are conducted in tetrahydrofuran or 2-methyltetrahydrofuran as the sole solvent without catalysts or additives, under non-anhydrous conditions in an air atmosphere where the solvent serves as the radical initiator.
ORGANIC & BIOMOLECULAR CHEMISTRY
(2024)
Article
Chemistry, Organic
Feroze Hussain, Sajjad Ahmed, Ashiq Hussain Padder, Qazi Naveed Ahmed
Summary: This study reports a novel and efficient one-pot synthesis method for mixed phosphorotrithioates, which does not require supplementary additives and shows broad applicability.
ORGANIC & BIOMOLECULAR CHEMISTRY
(2024)
Article
Chemistry, Organic
Hyunjin Oh, Ikyon Kim
Summary: A new 1,2,4-triazole-pyrrolo[1,2-a]pyrazine hybrid system, 6-acylpyrrolo[1,2-a][1,2,4]triazolo[5,1-c]pyrazine, was synthesized using a catalyst-free method. This method involved sequential exposure of pyrrole-2-carbonitrile-derived substrates to DMF-DMA and acyl hydrazide, resulting in the formation of acylated pyrazine and 1,2,4-triazole rings, enabling the installation of various substituents at specific positions on the core skeleton.
ORGANIC & BIOMOLECULAR CHEMISTRY
(2024)
Article
Chemistry, Organic
Ming Yan, Si-fan Wang, Yong-po Zhang, Jin-zhong Zhao, Zhuo Tang, Guang-xun Li
Summary: Here we developed an efficient photocatalytic approach for the convenient preparation of sulfinamides. The reaction allows for the gram-scale preparation of sulfinamides and the one-pot synthesis of various sulfonyl amides.
ORGANIC & BIOMOLECULAR CHEMISTRY
(2024)
Article
Chemistry, Organic
Farzaneh Bandehali-Naeini, Zahra Tanbakouchian, Noushin Farajinia-Lehi, Nicolas Mayer, Morteza Shiri, Martin Breugst
Summary: Two tandem catalytic systems were developed for the synthesis of novel 3,4-disubstituted maleimides using the same Ugi adducts. Different maleimide structures can be synthesized using either Pd or Cu catalysis.
ORGANIC & BIOMOLECULAR CHEMISTRY
(2024)
Article
Chemistry, Organic
Tanya Raghava, Anjan Chattopadhyay, Subhadeep Banerjee, Nivedita Sarkar
Summary: Amine substitution of two ortho fluorine atoms of tetrafluoroterephthalonitrile through SNAr chemistry is easily achievable. But further fluorine substitution is only possible under forcing conditions, yielding valuable fluorophores for bioimaging.
ORGANIC & BIOMOLECULAR CHEMISTRY
(2024)
Review
Chemistry, Organic
Anju Chadha, Santosh Kumar Padhi, Selvaraj Stella, Sowmyalakshmi Venkataraman, Thangavelu Saravanan
Summary: Alcohol dehydrogenases are enzymes that use cofactors for oxidation or reduction reactions of alcohols or carbonyl compounds. They are utilized in green chemistry and have applications in the production of pharmaceuticals. Recombinant enzymes have solved the challenge of producing purified enzymes in large quantities. Engineered alcohol dehydrogenases have been used in asymmetric synthesis in industry. Various methods have been established for regenerating expensive cofactors to make the enzymatic process more efficient and economically viable.
ORGANIC & BIOMOLECULAR CHEMISTRY
(2024)