Article
Agriculture, Multidisciplinary
Yumeng Chen, Meng Wang, Wei Wang, Yi Zeng, Xingjia Fan, Maobing Tu, Yushu Ma, Dongzhi Wei
Summary: The study focuses on the assessment and utilization of N,N-dimethylformamide-containing wastewater to reduce environmental impact. The results demonstrate that adding this wastewater to Trichoderma reesei fermentation media enhances cellulase production and cellulose hydrolysis. However, N,N-dimethylformamide, as a cellulase enhancer, is not biodegraded during cellulase production and remains in the cellulase solution. The study also identifies core enzyme modules inserted into Escherichia coli, which can metabolically degrade N,N-dimethylformamide and produce succinate using N,N-dimethylformamide-enhanced cellulosic sugar as a substrate. The described platform offers a potential solution for converting waste into valuable bioproducts.
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
(2022)
Article
Chemistry, Physical
Prabhat Prakash, Ardhra Shylendran, Birane Fall, Michael J. Zdilla, Stephanie L. Wunder, Arun Venkatnathan
Summary: (DMF)(3)NaClO4 is a soft-solid cocrystalline electrolyte that can be converted reversibly to a less conductive form (DMF)(2)NaClO4 by pressure or heat. Molecular dynamics simulations reveal that Na+ ions conduct through one-dimensional channels. In the molten mixture, the transference number for Na+ ions exceeds 0.5 at higher temperatures. The activation energy for Na+ ion diffusion from MD simulations is calculated to be 45 kJ mol(-1). Periodic density functional theory calculations demonstrate that the minimum-energy path for Na+ ion migration in a 3:1 stoichiometry crystal has a barrier of 33 kJ mol(-1), which is in reasonable agreement with the experimental value of 25 kJ mol(-1). Na+ ion conduction is vacancy-driven.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Article
Environmental Sciences
Lei Lei, Siyu Zhang, Wenhao Lou, Xuejiao Zhang, Bin Qin, Qing Zhao, Baoshan Xing
Summary: The protection mechanism of N,N-dimethylformamide (DMF) on few-layer black phosphorus (LBP) was investigated. It was found that DMF impedes the hydrolysis of phosphorus oxides, leading to a lower generation of soluble phosphorus compared to the absence of DMF. Insoluble phosphorus oxides were also observed in DMF-exfoliated LBP solution, providing further evidence for the hydrolysis impeding mechanism. This finding sheds light on the protection effects of DMF on LBP and contributes to the development of effective stabilization technologies.
FRONTIERS IN ENVIRONMENTAL SCIENCE
(2023)
Article
Chemistry, Organic
Jarvis Hill, David Crich
Summary: A method for the synthesis of hydroxyl-amines under mild conditions with a broad functional group tolerance was developed in this study. Different steric hindrances of magnesium amides require different ligands for optimal reactivity, and a reaction mechanism was proposed to explain the observed reactivity.
Article
Chemistry, Multidisciplinary
Saeedeh Ghaffari, Foad Kazemi
Summary: This report presents a simple, efficient, and high-yielding method for preparing N-nosyl-alpha-amino acid methyl esters, N-alkyl-N-nosyl-alpha-amino acid methyl esters, and N-alkyl-alpha-amino acid methyl esters.
Article
Green & Sustainable Science & Technology
Gopal Bhojani, Sachin Jani, Nirmal Kumar Saha
Summary: This study reports a convenient biodegradation method for DMF, DMAc, and NMP at high concentrations using free cells of Bacillus cereus APS1 strain. The biodegradation of these solvents can be monitored by refractive index, HPLC, and 1H NMR spectroscopy. The study also evaluates the effects of wastewater pH, cell growth, and solvent concentration on the degradation process.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Chemistry, Organic
Sangyun Kim, Annika D. S. Richardson, Atanu Modak, Nicholas J. Race
Summary: We report a dual-catalytic enantioselective allylic alkylation reaction that allows for the synthesis of alpha-amino heteroaryl benzylamine stereocenters with high yield and enantioselectivity.
JOURNAL OF ORGANIC CHEMISTRY
(2022)
Article
Energy & Fuels
Chunlin Luo, Shuai Liu, Gang Yang, Peng Jiang, Xiang Luo, Yipei Chen, Mengxia Xu, Edward Lester, Tao Wu
Summary: In this study, (CNTs-Fe3O4)-Co nanocomposites were designed as microwave-responsive catalysts and showed enhanced hydrogen generation rate. The results revealed that microwave irradiation could boost the HGR of the (CNTs-Fe3O4)(1:4)-Co (10 wt%) catalyst from 75.0% to 95.4% compared to conventional heating. The synergistic effect of cobalt and Fe3O4 sites in the (CNTs-Fe3O4)(1:4)-Co (10 wt%) catalyst was confirmed through various Co loadings and DFT calculations.
Article
Chemistry, Multidisciplinary
Monika Malik, Raffaele Senatore, Thierry Langer, Wolfgang Holzer, Vittorio Pace
Summary: This work documents the homologative transformation of N-methyl-N-oxyamides into N-acyl-N,O-acetals. The N-methyl group of the starting materials acts as a precursor of the methylene synthon required for the homologation. The procedure demonstrates genuine chemocontrol and flexibility, as evidenced by the diversity of substituents placed on both amide and nitrogen linchpins.
Article
Acoustics
Hanyang Gao, Kunkun Pei, Dong Lei, Guoxin Hu, Yan Chao, Aihua Meng, Hongcheng Wang, Wei Shentu
Summary: Gas-expanded liquids have advantages over traditional organic solvents due to tunability in mass transfer, solvation, and solubility, while ultrasonication is a commonly used method to enhance heat and mass transfer. The combination of ultrasonic technology and gas-expanded liquid systems can promote polymerization, enhance extraction efficiency, and control nanocrystal growth size, providing a perfect platform for high-speed mass transfer.
ULTRASONICS SONOCHEMISTRY
(2021)
Article
Chemistry, Analytical
Zhen-Guo Fan, Zhen-Yu Tian, Wang Li, Zhi-Hao Zheng, Jiu-Zhong Yang
Summary: N,N-dimethylformamide (DMF) can be effectively degraded by pyrolysis. The main pathways of DMF consumption are hydrogen abstraction and dissociation, leading to the formation of methane, ethylene, and carbon monoxide. Other nitrogen-containing compounds related to NOx are also produced. These findings are important for further research on the treatment of DMF in exhaust fumes through pyrolysis and the clean utilization of amine fuels.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2022)
Article
Agricultural Engineering
Yu Yin, Chunhui Ma, Wei Li, Sha Luo, Yushan Liu, Xueyun Wu, Zhenwei Wu, Shouxin Liu
Summary: The study demonstrated the efficient conversion of glucose to 5-HMF in ionic liquids with MoCl3 as catalyst under microwave irradiation, with the ionic liquid [BMIM]Cl proving to be the best solvent. Microwave irradiation not only reduced the reaction time and improved the yield of 5-HMF compared to traditional oil-bath heating, but also accelerated the bond breaking processes in the reaction.
INDUSTRIAL CROPS AND PRODUCTS
(2021)
Article
Chemistry, Applied
Elsa M. Goncalves, Nuno Lousa Pereira, Filipe Estanislau, Pedro Serra Carvalho
Summary: The thermal decomposition of the NBS/DMF solution at low temperatures was investigated, revealing a hazardous reaction with an autocatalytic mechanism. The onset and overall energy output of the decomposition were found to be influenced by the concentration of NBS and the materials used in the equipment.
ORGANIC PROCESS RESEARCH & DEVELOPMENT
(2023)
Article
Chemistry, Multidisciplinary
Akash Jana, Amol Kumar, Biplab Maji
Summary: A new study reports the alkylation of nine different classes of methyl-substituted N-heteroarenes using an environmentally friendly catalyst. The compounds are synthesized with high yields and selectivities, with water as the sole byproduct.
CHEMICAL COMMUNICATIONS
(2021)
Article
Polymer Science
Lei Xu, Mingxiang Ju, Wentai Guo, Shengrui Yu
Summary: Researchers focus on the extensional rheological behaviors of Poly(vinylidene fluoride) (PVDF) solutions in the electrospinning process. The extensional viscosity of PVDF solutions is measured to understand the fluidic deformation in extension flows. An exponential model can be used to fit the measured values of uniaxial extensional viscosity at various extension rates, while a traditional power-law model is applicable to steady shear viscosity.
Article
Chemistry, Organic
Dilek Isik Tasgin, Irem Bayraktar
Summary: We present a synthetic method for pyrrolizine-3-one derivatives and investigate their photophysical properties. These compounds are prepared through a series of reactions involving substituted pyrroles in one-pot, two-step oxidation, and intramolecular cyclization processes. The photophysical properties of the synthesized compounds are studied using UV-Vis and fluorescence spectroscopy in various solvents. The introduction of pyrrolyl substituents has a significant impact on Stokes shifts and quantum yield values.
SYNTHETIC COMMUNICATIONS
(2024)
Article
Chemistry, Organic
Satish Kumar Burra, Vaikunta Rao Lakinani, Raghunadh Akula, Chiranjeevi Yankkanti
Summary: A novel and green strategy for the construction of biologically relevant substituted indolyl-4H-chromenes scaffolds is reported, using L-proline as a catalyst and water as a promoter solvent. This catalytic system offers wider applicability, shorter reaction times, and high yields, making it an ideal condition for green chemistry.
SYNTHETIC COMMUNICATIONS
(2024)
Review
Chemistry, Organic
Abouelhaoul El Alami, Amine El Maraghi, Fatima Youssoufi, Assiya Atif, Hamid Sdassi
Summary: Nitrobenzimidazoles have become increasingly important in the design of new compounds in medicinal, therapeutic and chemical fields. This review provides an overview of the synthesis strategies and biological activities of nitrobenzimidazole derivatives.
SYNTHETIC COMMUNICATIONS
(2024)
Article
Chemistry, Organic
Nilesh Raghunath Khedkar, Alex Joseph, Milind Sindkhedkar
Summary: In this study, a new library of 3-(2-(pyrimidin-5-yl)thiazol-4-yl)-1,2,4-oxadiazole compounds was designed and synthesized as potential anticancer agents using in silico fragment-based drug design. The compounds were tested for their anticancer activity in vitro, and one compound exhibited excellent activity against multiple cancer cell lines.
SYNTHETIC COMMUNICATIONS
(2024)
Article
Chemistry, Organic
Terungwa H. Iorkula, Bryce A. Tolman, Scott R. Burt, Matt A. Peterson
Summary: A new method for synthesizing C-6 substituted products has been discovered in this study, which utilizes lower doses of fluoride and CsF as a catalyst, with high reaction yields and cost-effectiveness under suitable conditions.
SYNTHETIC COMMUNICATIONS
(2024)
Review
Chemistry, Organic
Ranjana Aggarwal, Swati Sharma
Summary: This review article mainly focuses on the synthesis of 3(5)-trifluoromethylpyrazoles via condensation reaction of trifluoromethyl-beta-diketones with hydrazines. It emphasizes the importance of fluorine-containing compounds and pyrazoles in the field of biology. The literature reported condensation reactions of trifluoromethyl-beta-diketones with hydrazines are covered.
SYNTHETIC COMMUNICATIONS
(2024)
Article
Chemistry, Organic
F. M. Alshareef, Sami A. Al-Harbi, Esam S. Allehyani, Omeima Abdullah, Magdy A. Ibrahim
Summary: This study aimed to construct a novel category of linear annulated chromeno[3',2':5,6]pyrido[2,3-d][1,3]thiazolo[3,2-a]pyrimidines. The chemical reactivity of the synthesized compounds was investigated, and they showed significant antimicrobial activity against various strains.
SYNTHETIC COMMUNICATIONS
(2024)
Article
Chemistry, Organic
Preethi Dhanapal, S. L. Manju
Summary: Thiazole based Schiff base scaffolds have become an integral part of drug development in recent years, playing a versatile role as building blocks for lead drug molecules. This study presents a facile one pot synthetic method for producing novel 4-aryl thiazoles with high yield, shorter reaction time, and milder conditions, without the need for catalysts or purification techniques.
SYNTHETIC COMMUNICATIONS
(2024)