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Determination and analysis of solid–liquid equilibria for ternary systems Na2SO4–H2O2–H2O and Na2CO3–H2O2–H2O at 5 °C J. Chem. Res. (IF 1.4) Pub Date : 2024-03-06 Yue Liu
To develop a better process for synthesizing sodium percarbonate and getting separation of the sodium salt, the equilibrium of the ternary system Na2SO4–H2O2–H2O and Na2CO3–H2O2–H2O at 5 °C was determined using the isothermal method, and the appropriate synthesis conditions for sodium carbonate from a theoretical perspective was discussed. The Na2SO4–H2O2–H2O system phase diagram contains one co-saturated
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Design, synthesis, and insecticidal activities of the novel sulfur-containing meta-amide compounds as potential pesticides J. Chem. Res. (IF 1.4) Pub Date : 2024-03-05 Yan Zhang, Jingwen Wu, Shuaihui Dang, Sha Zhou, Jifen Wang, Ruixue Wang
The potential risks associated with the high halogen content of typical meta-amide ( m-diamide) insecticidals aroused concerns among researchers. Hoping to make discoveries by introducing sulfur elements with good environmental compatibility, a series of novel sulfur-containing m-amide derivatives C were synthesized through exploration under mild conditions according to the literature. And the structures
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Ortho-iodination of aromatic carboxylic acids in aqueous media J. Chem. Res. (IF 1.4) Pub Date : 2024-02-28 Hengameh Havasel, Roghaye Soltani, Hossein Eshghi, Arash Ghaderi
A straightforward method has been developed for Pd(II) catalyzed ortho-iodination of benzoic acids in aqueous media. In this paper, mono-iodination of benzoic acids is reported in the presence of KI as the iodine source.
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Effect of coating MoS2 nanoflakes onto CuCo2O4 on the electrochemical performance as electrode materials of supercapacitors J. Chem. Res. (IF 1.4) Pub Date : 2024-02-12 Rong Zhao, Ji Wang, Yiming Han
CuCo2O4@MoS2 microflowers have been synthesized on Ni foam using a hydrothermal method, and their electrochemical performances as supercapacitor electrodes are investigated. The influence of MoS2 loading on the specific capacity and cycle stability of the nanocomposites is systematically analyzed. It is found that the addition of MoS2 significantly enhances the specific capacity of the CuCo2O4 microflowers
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Synthesis of curcumin derivatives for suppression of castration-resistant prostate cancer J. Chem. Res. (IF 1.4) Pub Date : 2024-02-07 Shunze Gong, Chixiang Yuan, Hang Hu, Defeng Xu
In this work, 20 curcumin derivatives containing halogen atoms or nitrogen atoms were synthesized for suppression of castration-resistant prostate cancer. These curcumin derivatives were prepared by aldol condensation between the substituted benzaldehydes and acetylacetone or ethyl 3-acetyl-4-oxopentanoate. All synthesized compounds were characterized by 1H nuclear magnetic resonance, 13C nuclear magnetic
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Thermo-promoted annulation of arylboronic acids with anthranils under catalyst-free conditions: Access to acridines J. Chem. Res. (IF 1.4) Pub Date : 2024-02-05 Jing Jiang, Peng Xie, Yue Gao, Chenqi Wu, Jingcheng Song
Acridine derivatives have exhibited great application prospects in organic photovoltaic devices. An efficient and atomically economical synthetic method was developed for the production of acridines from anthranils using arylboronic acids. This protocol features no catalysts, good functional group tolerance, and operational simplicity. This catalyst-free process afforded various acridines in moderate
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Effect of ions added by mordant and brightener on the signal structure and energy storage properties of natural dye-based DSSCs J. Chem. Res. (IF 1.4) Pub Date : 2024-01-27 Susana Vargas, Argelia Rivera-Vargas, Rogelio Rodriguez
It has been observed experimentally that the output voltage profiles are exponential of two types: rising or decaying; the structure of these profiles is controlled by the mobility of charges: ions and electrons. A comparison between the arrival times of electrons at electrode τe, and ions at double-layer τi, allows determining the shape of these signals. The electrons produced by the photon–dye interaction
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Fenton oxidation of glycerin: A sustainable approach for byproduct treatment J. Chem. Res. (IF 1.4) Pub Date : 2024-01-25 Köntös Zoltán
This article explores the application of Fenton oxidation as a sustainable and efficient method for the treatment of glycerol, a major byproduct in biodiesel production. Glycerol, rich in impurities, poses environmental challenges if not properly managed. The research aims to contribute to the understanding of Fenton oxidation mechanisms specific to glycerol transformation into dl-glyceraldehyde and
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Potential protein tyrosine phosphatase 1B and α-glucosidase inhibitory flavonoids from Erythrina variegata: Experimental and computational results J. Chem. Res. (IF 1.4) Pub Date : 2024-01-24 Phi-Hung Nguyen, Ngoc-Thao-Vy Trinh, Thi-Thuy Do, Thi-Ha Vu, Dao Cuong To, Hong Khuyen Thi Pham, Phu Chi Hieu Truong, Kim Thuong Pham Van, Manh Hung Tran
Erythrina variegata L., a member of the Fabaceae family, is a valuable medicinal plant with a rich history of traditional medicinal uses. However, its potential as an antidiabetic agent has remained largely unexplored. In this study, three isoflavonoid compounds, namely eryvarin M (1), eryvarin H (2), and neobavaisoflavone (3), were isolated from E. variegata. These compounds displayed significant
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Rhodium-catalyzed C–H selective amination of 2,4-diarylquinazolines with N-fluorobenzenesulfonimide J. Chem. Res. (IF 1.4) Pub Date : 2024-01-24 Wei Gao, Lifang Hu, Fang Gao, Guozhu Hu, Xueying Zhou
A rhodium-catalyzed C–H selective amination of 2,4-diarylquinazolines has been developed with the commercially available N-fluorobenzenesulfonimide as the amino source. This approach offers a unique route for direct C–H amidation and demonstrates remarkable functional group tolerance and regioselectivity.
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Density functional theory/time-dependent density functional theory investigations on the color-structure relationship of biopigment molecules J. Chem. Res. (IF 1.4) Pub Date : 2024-01-12 Jing Huang, Lei Yang, Yikun Zhou, Yanjiao Chen, Qimin Liu, Wangcheng Wu
The study of molecular derivatives of biological dyes is of great importance for the green transformation of the printing, dyeing, and textile industries. In this study, B3LYP density functional methods are used to optimize the geometric configuration of the selected molecules and to explore the relationship between the structure and color of biological dye molecules and their color mechanism. This
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Determination of trace thallium by flow injection combined with graphite furnace atomic absorption spectrometer based on immobilized p-dimethylaminobenzylidenerhodanine separation and preconcentration J. Chem. Res. (IF 1.4) Pub Date : 2024-01-10 Bangfu Liu, Guo-wen He, Le-zhou Zhou
The novelty of immobilized p-dimethylaminobenzylidenerhodanine is successfully prepared by using TiO2-based nanoparticles as the carrier. It is applied to preconcentrate and separate trace thallium and detect by flow injection combined with graphite furnace atomic absorption spectrometer. The results show that immobilized p-dimethylaminobenzylidenerhodanine can preconcentrate and separate trace thallium
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Computer-aided drug discovery of natural antiviral metabolites as potential SARS-CoV-2 helicase inhibitors J. Chem. Res. (IF 1.4) Pub Date : 2024-01-08 Eslam B Elkaeed, Ibrahim H Eissa, Abdulrahman M Saleh, Bshra A Alsfouk, Ahmed M Metwaly
In our quest to discover effective inhibitors against severe acute respiratory syndrome coronavirus 2 helicase, a diverse set of more than 300 naturally occurring antiviral metabolites was investigated. Employing advanced computational techniques, we initiated the selection process by analyzing and comparing the co-crystallized ligand (VXG) of the severe acute respiratory syndrome coronavirus 2 helicase
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Al3+-modified ZnO thin film sensor fabricated by the sputtering method: Characterization and a carbon monoxide gas detection study J. Chem. Res. (IF 1.4) Pub Date : 2024-01-04 Mohammed H Al-Maamori, Ahmed N Al-Jamal, Salih Abbas Habeeb, Ali S Hassan, Hasan Sh Majdi
Al: ZnO films are prepared by spraying from the pure ZnO and Al with doping at different weight ratios 0.01, 0.03, 0.05, and 0.09. X-ray diffraction, atomic force microscopy, and energy-dispersive X-ray spectroscopy are used to analyze the structural properties of the films. The results of X-ray diffraction prove that polycrystalline Al:ZnO with a hexagonal wurtzite structure is preferentially oriented
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A novel, simple, and facile synthesis of 3-(3-benzyl-2,3-dihydrobenzo[d]thiazol-2-yl)benzo[d]oxazole-2(3H)-thione derivatives J. Chem. Res. (IF 1.4) Pub Date : 2023-04-29 Mahmoud Nassiri
Novel 3-(3-benzyl-2,3-dihydrobenzo[d]thiazol-2-yl)benzo[d]oxazole-2(3H)-thione derivatives are efficiently synthesized in excellent yields by reactions of benzothiazoles, benzyl bromides, and 2-mer...
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Solubility and thermodynamic properties of sodium theophylline salt in aqueous sodium hydroxide solution at different temperatures J. Chem. Res. (IF 1.4) Pub Date : 2023-04-29 Zhenhuan Dong, Lingqi Kong, Zhen Liu, Anming Yang
The solubility data of sodium theophylline salt in the water and aqueous sodium hydroxide systems with molarities of 0.00, 0.01, 0.10, 0.20, 0.49, and 0.96 mol kg−1 at temperatures ranging from 283...
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Kinetic study on the adsorption of some polycyclic aromatic hydrocarbons using dinitrodiphenyldiquinoline adsorbent J. Chem. Res. (IF 1.4) Pub Date : 2023-04-29 Salah A Al-Trawneh
In this study, a dinitrodiphenyldiquinoline derivative is synthesized, purified, and characterized, and its adsorptive ability is examined for the first time. Twelve common polycyclic aromatic hydr...
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BODIPY-based fluorescent sensors for detection of explosives J. Chem. Res. (IF 1.4) Pub Date : 2023-04-24 Yen Thi Nguyen, Seunghan Shin, Kiok Kwon, Namdoo Kim, Se Won Bae
The detecting and screening of explosives has become a global consideration in dealing with potential terrorism threats and the misuse of high explosives. Several detection techniques have been dev...
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A microwave-assisted and efficient reduction protocol for the synthesis of alkyl-substituted [2.2]-paracyclophanes J. Chem. Res. (IF 1.4) Pub Date : 2023-04-02 Mengyuan Tian, Lixiang Zhang, Lijing Gao, Guomin Xiao
[2.2]-Paracyclophane derivatives have been promising platforms for applications in biology and materials science. To access pure derivatives thereof, a safe and non-toxic synthetic method for 4-n-p...
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Continuous-flow Heck coupling reactions catalyzed by Pd complexes of amidoxime fibers J. Chem. Res. (IF 1.4) Pub Date : 2023-03-15 Jiaxin Xie, Siyu Lu, Yilin Zhang, Xiaohan Lu, Zhen Ding, Tingxian Tao, Maodong Xu, Zhichuan Wu
Improving production efficiency and developing green catalytic systems are key issues for applying Heck coupling reactions in the chemical industry. In this study, an amidoxime-fiber-supported Pd c...
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Highly selective lanthanide-doped ion sieves for lithium recovery from aqueous solutions J. Chem. Res. (IF 1.4) Pub Date : 2023-03-07 Lu Zheng, Jin Chen, Jianke Sun, Min Liu, Yuyu Gao, Zhifeng Guo
The increased global demand for lithium is rapidly depleting the lithium ore reserves. Therefore, attention has turned to the recovery of lithium from aqueous solutions, such as lithium-containing ...
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Sonochemical synthesis and electrochemical performance of reduced graphene oxide/cerium dioxide nanocomposites J. Chem. Res. (IF 1.4) Pub Date : 2023-03-01 Rui Bai, Yunpeng Zhao, Cuiying Lu, Yu Meng, Wenwen Gao, Yan Wang, Rui Dang, Miao Mu, Jinxi Wang, Yurong Jiao
Reduced graphene oxide/cerium dioxide (is synthesized by a simple sonochemical route. The morphology and chemical structure of the nanocomposites are characterized by scanning electron microscopy, ...
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A study on the viscosity, density, and derivative properties of 1-alkyl-3-methylimidazolium bis((trifluoromethyl)sulfonyl)imides with benzo-15-crown-5 binary mixtures J. Chem. Res. (IF 1.4) Pub Date : 2023-02-22 Ju Tian, Qi Tang, Yongshen Zhang, Yuzhen Shu, Lihua Zhang, Weiming Zheng
The essential factors that affect the interfacial mass transfer rate of crown ether–ionic liquid systems are studied by examining the physicochemical properties of mixtures of ionic liquids with be...
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Reactions of 4,5-difluoro-1,2-dinitrobenzene with amines in dimethylformamide or EtOH J. Chem. Res. (IF 1.4) Pub Date : 2023-02-20 M John Plater, William TA Harrison
Substitution reactions of 1,2-difluoro-4,5-dinitrobenzene were explored in dimethylformamide alone and with KOH/H2O, Hünig’s base or Et3N and with Me2NHCl/Et3N in EtOH. The fluorine atoms were alwa...
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The solvation of SOH group in hydrated HSO4−(H2O)n clusters J. Chem. Res. (IF 1.4) Pub Date : 2023-02-08 Huiyan Li
The S=O stretching and SOH bending peaks in the vibrational spectra of HSO4−(H2O)n, with n up to 6, are analyzed by both harmonic analysis and ab initio molecular dynamics simulation. The SOH bendi...
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Synthesis and enzymatic inhibition effects of thiazolidinedione 3C-like protease inhibitors J. Chem. Res. (IF 1.4) Pub Date : 2023-02-08 Xin Ye, Yuhua Li, Lina Guo, Yiling Yao, Rouyu Zhu, Shuang Wei, Hua Diao, Zhiyu Shao
The 3C-like protease (also known as Mpro) plays a key role in SARS-CoV-2 replication and has similar substrates across mutant coronaviruses, making it an ideal drug target. We synthesized 19 thiazo...
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Fischer indole synthesis in DMSO/AcOH/H2O under continuous flow conditions J. Chem. Res. (IF 1.4) Pub Date : 2023-02-08 Mei Wang, Shenghu Yan, Yue Zhang, Shunlin Gu
A new continuous flow synthetic method for preparing indole and its derivatives are successfully developed to overcome the disadvantages of traditional batch methods, such as low conversion rates, ...
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Synthesis and photocatalytic activity of a lanthanum doped CoFe2O4/TiO2 nanocomposite for photodegradation of methylene blue organic dye J. Chem. Res. (IF 1.4) Pub Date : 2023-01-28 Hue TM Dang, Mai TT Nguyen, Luyen T Tran, Hoang V Tran, Chinh D Huynh
In this study, a 0.2CoFe2O4/0.8TiO2-5%La nanocomposite was synthesized by a co-precipitation and a hydrothermal method and then was applied as a high activity photocatalyst for degradation of methy...
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Design, synthesis, and biological evaluation of urolithin derivatives as potential phosphodiesterase II inhibitors J. Chem. Res. (IF 1.4) Pub Date : 2023-01-28 Hecheng Wang, Long Tang, Wanhui Di, Feng Yan, Xianfeng Huang, Xiaoqing Feng, Guoqiang Song
Urolithins are the gut microbiota metabolites of ellagitannins which are found in natural plants such as pomegranate, strawberry, and raspberry, and in nuts. Recently, several reports have clarifie...
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Preparation of magnetic Co–Fe layered double hydroxides and its adsorption properties for the removal of methyl orange J. Chem. Res. (IF 1.4) Pub Date : 2023-01-20 Yu-Long Xie, Fa-Ping Ye, Su-Qin Zhao
In this study, Co–Fe layered double hydroxides are prepared by a hydrothermal method. The Co–Fe layered double hydroxides are used as an adsorbent for the investigation of the thermodynamic paramet...
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A label- and enzyme-free fluorescence assay based on thioflavin T–induced G-quadruplexes for the detection of telomerase activity J. Chem. Res. (IF 1.4) Pub Date : 2023-01-12 Zhe Chen, Yunxia Wang
A label- and enzyme-free fluorescence assay based on thioflavin T–induced G-quadruplexes is developed to sensitively and specifically detect telomerase activity. Thioflavin T has a dual role as an ...
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Reducible amino acid based cationic lipids with a naphthalimide moiety as non-viral gene vehicles J. Chem. Res. (IF 1.4) Pub Date : 2022-12-22 Jian Wang, Deyu Wang, Ting-Ting Du, Wen-Jing Yi, Qiang Liu
Three basic amino acid–based cationic lipids bearing a fluorescent naphthalimide moiety and a reducible disulfide linkage are synthesized and applied as non-viral gene vehicles. Their DNA interacti...
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Palladium-catalyzed transfer hydrogenation of terminal alkynes using ethanol as the hydrogen donor J. Chem. Res. (IF 1.4) Pub Date : 2022-12-21 Jie Hui, Feng Wang
A ligand-promoted, palladium-catalyzed transfer hydrogenation of terminal alkynes using ethanol as the hydrogen donor is developed. The chemical selectivity control is achieved based on ligand regu...
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Photophysical properties of furan-bridged dimeric boron-dipyrromethene derivatives (BODIPYs) J. Chem. Res. (IF 1.4) Pub Date : 2022-12-19 Galam Jung, Namdoo Kim, Se Won Bae
In order to investigate the changes in the spectroscopic properties of dimeric boron-dipyrromethenes (BODIPYs), four BODIPY derivatives are synthesized, including a monomer BODIPY in which a furyl ...
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Synthesis of stable flowerlike MgAl-LDH@MIL-88A and its adsorption performance for fluoride J. Chem. Res. (IF 1.4) Pub Date : 2022-12-17 Wenqing Ma, Yuantao Chen, Jianxian Qin, Guangzhuang Hu, Cheng Xu
MgAl-LDH@MIL-88A as an effective adsorbent was successfully prepared by a simple stirring method in water bath through loading MIL-88A onto the surface of flowerlike MgAl-LDH, which was synthesized...
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Thermal and thermo-oxidative stability of a series of palladium and platinum ferrocenylamine sulfides and selenides J. Chem. Res. (IF 1.4) Pub Date : 2022-12-08 Hussein M Ali, Isra H Ali
Ferrocenylamine complexes have found increasing applications in the fields of catalysis in various organic reactions, industry, medical treatments and enzyme–activity determinations. Therefore, inf...
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The design and synthesis of benzylpiperazine-based edaravone derivatives and their neuroprotective activities J. Chem. Res. (IF 1.4) Pub Date : 2022-12-06 Mengjie Gao, Shuangyan Ma, Tong Xu, Nan Jiang, Yi Xu, Yan Zhong, Bin Wu
New edaravone derivatives containing a benzylpiperazine moiety are designed and synthesized. The structures are characterized by 1H NMR, 13C NMR, and high-resolution mass spectrometry. The potentia...
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Catalytic degradation of CWAs with MOF-808 and PCN-222: Toward practical application J. Chem. Res. (IF 1.4) Pub Date : 2022-11-21 Shaoxiong Wu, Lianyuan Wang, Haiyan Zhu, Jing Liang, Liang Ge, Cong Li, Ting Miao, Jian Li, Zhenxing Cheng
Chemical warfare agents, such as nerve agents (GD and VX) and blister agents (HD), have strong toxicities to mankind. In recent years, zirconium-based metal-organic frameworks have been found to be...
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Hydrothermal synthesis of polyaniline nanospheres coupled with graphene oxide for enhanced specific capacitance performances J. Chem. Res. (IF 1.4) Pub Date : 2022-11-17 Shanxin Xiong, Yangbo Xu, Xiaoqin Wang, Ming Gong, Jia Chu, Runlan Zhang, Bohua Wu, Chenxu Wang, Zhen Li
Polyaniline is one of the most common electrode materials for supercapacitors. The morphology of polyaniline directly affects the properties of polyaniline. In this paper, a new method for preparin...
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A polymerizable difunctional photoinitiator featuring a bio-based group and its photoinitiating properties J. Chem. Res. (IF 1.4) Pub Date : 2022-11-14 Yanfang Zhou, Rong Zhong, Zhengjie Wang
A polymerizable difunctional photoinitiator 2-methylene-succinic acid bis-{2-[4-(2-hydroxy-2-methylpropionyl)phenoxy]ethyl} ester (IAHHMP) based on the commercial photoinitiator 2-hydroxy-1-[4-(2-h...
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Synthesis of 3-(2-oxopropyl)-2-arylisoindolinone derivatives via a three-component reaction of diaryliodonium salts with 2-formylbenzonitriles and phenylacetylenes J. Chem. Res. (IF 1.4) Pub Date : 2022-11-08 Yang Li, Yuan Li, Haiyang Fei, Ruiping Kong, Zhenzhong Yu, Liu He
A copper-catalyzed multicomponent cascade cyclization using readily available substrates, including 2-formylbenzonitriles, phenylacetylenes, and diaryliodonium salts, is achieved. A broad reaction ...
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The effect of CO2-doped spiro-OMeTAD hole transport layer on FA(1−x)CsxPbI3 perovskite solar cells J. Chem. Res. (IF 1.4) Pub Date : 2022-11-08 Zhicheng Fan, Chuwu Xing, Yi Tan, Jinxia Xu, Lingyun Liu, Yuanming Zhou, Yan Jiang
Black-phase formamidinium lead iodine with 1.48 eV bandgap is considered to be the most promising material for improving the near-theoretical limit efficiency of perovskite solar cells, but at room...
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A one-step method for preparing Cr-doped SiO2: An efficient catalyst for the direct oxidation of cyclohexane to ketone-alcohol oil J. Chem. Res. (IF 1.4) Pub Date : 2022-10-26 Xiaozhong Wang, Kaicheng Xue, Cai Xu, Yingqi Chen, Liyan Dai
A series of heterogeneous catalysts with Cr as an active component is prepared by an innovative in situ coprecipitation method. The prepared Cr/SiO2 catalyst has high catalytic activity, selectivit...
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The design, synthesis, antioxidant, and antihypoxia activities of two new hydroxydaidzein derivatives J. Chem. Res. (IF 1.4) Pub Date : 2022-10-18 Qingyue Da, Jin Shao, Pengpeng Zhang, Jie Zhang, Huiping Ma, Linlin Jing
7,8,3’,4’,5’-Pentahydroxyisoflavone (8,3’,5’-trihydroxydaidzein) and 6,7,8,3’,4’,5’-hexahydroxyisoflavone (6,8,3’,5’-tetrahydroxydaidzein) are synthesized via a simple and effective method using co...
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Homolytic aromatic substitution of acyl radicals: Oxidative coupling of 2-methylquinolines with quinoxalines J. Chem. Res. (IF 1.4) Pub Date : 2022-10-13 Xue Li, Xian Hao Wu, Jia Feng Yu, Yuan Yuan Zhang, Zhong Ke Hou, Yuan Yuan Xie
Oxidative coupling of 2-methylquinolines with quinoxalines via a TBHP (t-butyl hydroperoxide) and TFA (trifluoroacetic acid) mediated Minisci reaction affords quinolin-2-yl(quinoxalin-2-yl)methanon...
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A phytochemical investigation and evaluation of the antioxidant and antibacterial activities of the stem bark extract of Clematis simensis (Yeazo hareg) J. Chem. Res. (IF 1.4) Pub Date : 2022-09-28 Misganaw T Ayana, Yekedem G Mehari, Belete B Beyene
Medicinal plants have been used for the treatment of various diseases and still play an important role in covering the basic health needs in the developing countries like Ethiopia. In this study, s...
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A Fe3O4 nanospheres/carbon core–shell structure for effective removal of pollutants from water J. Chem. Res. (IF 1.4) Pub Date : 2022-09-20 Huaqiang Tao, Yuxiang Wang, Beifeng Lv, Feifei Tao, Wei Wang
The treatment of wastewater by adsorption is a good alternative technique and attracts extensive attention worldwide due to its versatility, scalability, and low operational costs. In this work, a ...
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Synthesis, biological evaluation and molecular docking of N, N’-bis([1,2,4]triazole[4,3-b][1,2,4,5]tetrazine-6-yl)alkylamine derivatives as potent c-Met antagonists J. Chem. Res. (IF 1.4) Pub Date : 2022-09-17 Zhonglu Ke, Tianyun Pei, Zhenzhen Yang, Xuanhe Zhang, Feng Xu, Zihang Xu, Jixiang Ding
A series of N, N’-bis([1,2,4]triazole[4,3-b][1,2,4,5]tetrazine-6-yl)alkylamine derivatives is designed, synthesized and evaluated for their inhibition activities against three tumor cell lines and ...
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Utilization of 4-fluoro-7-nitro-2,1,3-benzoxadiazole (NBD-F) as a fluorogenic reagent for the development of a spectrofluorometric assay method for taurine in energy drinks J. Chem. Res. (IF 1.4) Pub Date : 2022-09-13 Ahmed O Alnajjar, Abdallah Ahmed Elbashir, Rafea Elgack Elgorashe, Ammar M Ebrahim, Abubakr M Idris, Hany M Abd El-Lateef
The development of a simple, inexpensive, sensitive, and selective spectrofluorometric assay method for taurine in energy drinks utilizing 4-fluoro-7-nitro-2,1,3-benzoxadiazole as a fluorogenic age...
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A glassy carbon electrode modified with polyaniline nanowires: An electrochemically effective surface area and an electrocatalytic activity for the oxidation of methanol under alkaline conditions J. Chem. Res. (IF 1.4) Pub Date : 2022-09-08 Luyen Thi Tran, Hoang Vinh Tran, Ha Hong Cao, Anh Van Nguyen, Chinh Dang Huynh
Polyaniline nanowires are directly synthesized on a glassy carbon electrode (3 mm diameter) by an electrochemical process. The polyaniline nanowires, of uniform size, a diameter of 85–95 nm, and hi...
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Doxorubicin-loaded Mn-doped SiO2 nanospheres coated with carboxymethyl chitosan: fabrication, characterization, and in vitro evaluation J. Chem. Res. (IF 1.4) Pub Date : 2022-08-29 Lili Ji, Han Zheng, Shuangyan Li, Dehui Li, Qiao Gao, Jing Yang
This work describes the preparation of manganese-doped mesoporous silica nanospheres via an in situ doping method. The results of scanning electron microscopy and N2 adsorption demonstrate that mes...
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Rapid and selective on-site detection of triacetone triperoxide based on visual colorimetric method J. Chem. Res. (IF 1.4) Pub Date : 2022-08-29 Yonggang Li, Xingsheng Liu, Guannan Zhang, Ruihua Wang, Ruimin Yue, Guangfu Liao, Zhenwen Sun, Yao Liu
In this work, a visual colorimetric method for the rapid and selective detection of triacetone triperoxide is reported. This visual colorimetric method is based on the reaction between potassium ti...
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Analysis of certain samples of phenazine dyes from the Historical Dyestuff Collection of the Technical University Dresden by liquid chromatography–mass spectrometry J. Chem. Res. (IF 1.4) Pub Date : 2022-08-05 Oliver Reinke, Susanne Machill, Horst Hartmann
By means of liquid chromatography–mass spectrometry and other analytical methods, a variety of different samples of the phenazine dye Chrysaniline hosted in the Historical Dyestuff Collection of th...
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Concanamycin H from the soil actinomycete Streptomyces sp. R1706-8 J. Chem. Res. (IF 1.4) Pub Date : 2022-08-04 Guo-Li Li, Hui-Min Qi, Yi-Lin He, Yu-Kai Shen, Tong Shen
The actinomycete strain R1706-8 is isolated from a soil sample collected from the nest of the horned-face bee (Osmia cornifrons) and identified as Streptomyces sp. based upon the results of 16SrRNA...
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Selective oxidation of primary benzylic alcohols to aldehydes using NaNO3 under ball milling J. Chem. Res. (IF 1.4) Pub Date : 2022-07-29 Jing-Fei Wang, Li-Yu Lu, Pu Zhang, Yu-Jun Qin, Zhi-Xin Guo
A facile method for oxidation of primary benzylic alcohols to the corresponding aldehydes is reported using NaNO3/P2O5 under high-speed ball-milling conditions. This approach is clean, efficient, a...
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The practical acetylation of nucleosides using acetic anhydride/acetic acid as a reusable solvent J. Chem. Res. (IF 1.4) Pub Date : 2022-07-29 Ran Xia, Chao Xia, Ying-Xing Yang, Li-Jie Liu, Lei-Shan Chen, Li-Ping Sun
The highly practical acetylation of free nucleosides is achieved using acetic anhydride/acetic acid as a reusable solvent and acetylating regent. A series of nucleosides, including ribosyl, deoxyri...
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Supramolecular chemistry of organoplatinum(IV) complexes: A syndiotactic polymer with uracil substituents J. Chem. Res. (IF 1.4) Pub Date : 2022-07-23 Michael J Nieradko, Richard J Puddephatt
The reaction of RCH2X with [PtMe2(DPA)], 1, (DPA = di-2-pyridylamine) has given [PtXMe2(CH2R)(DPA)] by cis oxidative addition to give 2a, when R = 6-uracil, X = Cl, or 3a, when R = CO2H, X = Br, but by a mixture of cis and trans oxidative addition to give 4a/4b when R = 4-C6H4CO2H, X = Br. The unusual cis stereochemistry of oxidative addition is rationalized thermodynamically by the formation of an
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Extensive exploration of the conformational landscapes of neutral and terminally blocked prolines in the gas phase: A density functional theory study J. Chem. Res. (IF 1.4) Pub Date : 2022-07-15 Yizhou Yang, Zijing Lin
Proline is an important amino acid that plays unique roles in the structures of peptides and proteins. The conformations of proline are searched by a thorough method, generating 3888 trial structures optimized at the B97D/6-311++G** level. A total of 23 conformations are found and their structural and energetic data are presented. All the proline conformers exhibit a coplanar feature for four of the
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Synthesis of new 5-benzylidene-hydantoin esters J. Chem. Res. (IF 1.4) Pub Date : 2022-07-13 Ndivhuwo R Tshiluka, Mpelegeng V Bvumbi, Unarine Tshishonga, Simon S Mnyakeni-Moleele
Compounds containing a hydantoin moiety are found in several medicines in clinical use. In this research, ethyl- and methyl-[2-(5-benzylidene)-2,4-dioxoimidazolidin-3-yl]acetyl esters are successfully synthesized over four reaction steps using conventional methods. The synthesis begins by subjecting hydantoin to a Knoevenagel condensation reaction with three different benzaldehydes to afford the penultimate
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A fluorescent chemosensor based on β-N-glycosyl and coumarin for sensing of Hg(II) ions in acetonitrile J. Chem. Res. (IF 1.4) Pub Date : 2022-07-07 Xiaomin Gu, Bin Huang, Cuixia Xu, Dawei Jiang, Qiang Zhao
A novel fluorescent chemosensor containing a coumarin–thiourea unit and a β-N-glycosyl moiety is designed, synthesized, and characterized by 1H NMR, 13C NMR, and elemental analysis. The chemosensor can selectively and efficiently detect Hg2+ in CH3CN with a detection limit of 2.6 μM.