Article
Chemistry, Inorganic & Nuclear
Sahil Kohli, Garima Rathee, Sunita Hooda, Ramesh Chandra
Summary: This study focuses on the synthesis of an efficient, reusable, and novel Al2O3/CuI/PANI nanocatalyst using a simple self-assembly approach, which was then used for the catalytic one-pot synthesis of 2-substituted benzimidazoles in ethanol. The nanocatalyst showed high % yield, short reaction time, and green metrics values.
DALTON TRANSACTIONS
(2021)
Article
Chemistry, Physical
Haniyeh Zandieh, Javad Mokhtari, Kambiz Larijani
Summary: A facile method for the synthesis of various 2-substituted benzothiazoles has been developed. Cu-MOF serves as a recyclable heterogeneous catalyst in a one-pot three-component reaction in DMF solvent, resulting in high yields of the target products without the need for any additive. Furthermore, the catalyst shows good recycling and reusable properties.
Article
Chemistry, Organic
Ashok S. Pise, Ajit P. Ingale, Navnath R. Dalvi
Summary: An efficient and ecofriendly method for synthesizing 2-substituted benzothiazoles using sulfated tungstate catalysis has been described. The protocol offers advantages such as faster reaction rate, solvent-free or mild reaction conditions, wide functional group compatibility, excellent yields, easy work-up procedure, and excellent catalyst recyclability, making it more practicable, cost-effective, and environmentally benign.
SYNTHETIC COMMUNICATIONS
(2021)
Article
Chemistry, Organic
Abdalrahman Khalifa, Marco Giles, Hamed I. Ali, Samy Mohamady
Summary: We report a facile, metal-free, and catalyst-free method for the preparation of N-phthalimides in good to excellent yield by reacting 2-(arenesulfonyl)phthalimides with various amine substrates.
EUROPEAN JOURNAL OF ORGANIC CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Theodora W. von Zuben, Guilherme Cariello Silva, Airton G. Salles Jr
Summary: A visible light-driven metal-free route has been developed to access highly substituted pyrroles using benzophenone as a photocatalyst under solvent-free conditions. The photoinduced C-H functionalisation adds structural variety and complexity to the final products, demonstrating the potential of this transformation.
Article
Biochemistry & Molecular Biology
Zeng-Jie Yang, Qing-Tian Gong, Yuan Yu, Wei-Fan Lu, Zhe-Ning Wu, Na Wang, Xiao-Qi Yu
Summary: By combining enzymatic and visible-light catalysis, an efficient and green method for synthesizing 2-substituted benzothiazoles has been developed, achieving high yields in a short amount of time with nearly 100% atomic utilization. This method showcases the potential of harnessing the catalytic activity of enzymes and visible light for organic synthesis, without the need for additional oxidants or metals, making it environmentally friendly.
BIOORGANIC CHEMISTRY
(2021)
Article
Materials Science, Ceramics
Sankar Sekar, Subalakshmi Kumar, Youngmin Lee, Hyewon Jun, Jiseop Yun, Thandavarayan Maiyalagan, Sejoon Lee
Summary: In this study, ilmenite (FeTiO3) nanochips were synthesized using a template-free hydrothermal growth technique and their catalytic reduction activities for 4-nitrophenol (4-NP) were demonstrated. The nanochips prepared at 180°C showed more homogeneous distributions in morphology and size compared to other samples. Moreover, they exhibited high porosity and charge transfer activity, enabling excellent reduction performance with a high reduction rate (approximately 91%) and short reduction time (6 min). These findings suggest that FeTiO3 nanochips can be utilized as an effective catalyst for the reduction of 4-NP in future environmental technology.
CERAMICS INTERNATIONAL
(2022)
Article
Energy & Fuels
Pawanpreet Kaur, Harish Kumar Chopra
Summary: Supported ionic liquids (SILs), immobilized ILs onto solid support materials, have shown advantages over pure ILs in various applications. In this study, new SILs were synthesized by immobilizing S-alkyl/aryl-substituted 2-mercaptobenzothiazolium-based ILs onto MCM-41 silica support. The synthesized SILs were characterized, and their performance in removing sulfur-containing aromatic species from gasoline was investigated. MCM-41@[S-BzBTh][Cl] showed excellent sulfur removal efficiency from model gasoline.
Article
Chemistry, Physical
Dan Wen, Xing Ge, Ren-Guan Miao, Xinxin Qi, Xiao-Feng Wu
Summary: A palladium-catalyzed carbonylative synthesis of carboxamide substituted 2-pynones from methyl enynoates and nitroarenes has been developed. A wide range of carboxamide substituted 2-pynones were obtained in moderate to high yields with quite high functional group compatibility using nitroarenes as the nitrogen sources and Mo(CO)6 as both CO surrogate and reductant. Late-stage modifications of natural molecules were also achieved.
JOURNAL OF CATALYSIS
(2023)
Article
Biochemistry & Molecular Biology
Spyridon Mourtas, Vasileios Athanasopoulos, Dimitrios Gatos, Kleomenis Barlos
Summary: In this study, a facile and efficient method for the solid-phase synthesis of chiral-pure BTH and AP-BTH C-terminal modified amino acids and peptides was developed.
Article
Chemistry, Physical
Savarimuthu David Amalraj, Surya Cholayil Palapetta, Gurusamy Harichandran
Summary: In this study, a series of pharmaceutically valuable and functionalized fused heteroaromatic compounds were synthesized via catalytic cyclocondensation. Amberlite IRA400-Cl anionic resin was used as an efficient green catalyst. The method showed mild conditions, easy operation, excellent product yield, green catalyst, and catalyst reusability.
JOURNAL OF MOLECULAR STRUCTURE
(2022)
Article
Chemistry, Organic
Kodipura P. Sukrutha, Kuppalli R. Kiran, Kodagahally T. Gunashree, Shivakumar Divyashree, Prerana Purusotham, Marikunte Y. Sreenivasa, Maralinganadoddi P. Sadashiva
Summary: An efficient one-pot synthesis of 2-aryl/2-aroylbenzothiazoles was developed via copper-mediated condensation of 2-chloroanilines with dithioesters. The synthesized compounds exhibited promising antimicrobial and antibiofilm properties, with three compounds showing significant inhibitory effects against tested pathogens and strong inhibitory effects on biofilm formation.
SYNTHESIS-STUTTGART
(2023)
Article
Multidisciplinary Sciences
Hai Truong Nguyen, Trinh Hao Nguyen, Dung Duc Pham, Cong Tien Nguyen, Phuong Hoang Tran
Summary: A green method for synthesizing benzoxazoles and benzothiazoles with good yields has been developed using imidazolium chlorozincate (II) ionic liquid supported into Fe3O4 nanoparticles (LAIL@MNP) under solvent-free sonication. This method allows for fast reaction rates and high product yields, with the added benefit of easy separation and recyclability of the catalyst material.
Article
Chemistry, Organic
Dengqi Xue, Qianwei Ge, Xiecheng Zhi, Siyu Song, Liming Shao
Summary: A metal-free radical cascade cyclization of 2-isocyanoaryl thioethers with alcohols has been developed, providing a novel and effective method for the synthesis of diverse 2-hydroxyalkyl benzothiazoles with broad substrate scope, good functional group tolerance, and moderate to excellent yields.
Article
Chemistry, Physical
Heyan Jiang, Cuicui Zang, Hongmei Cheng, Bin Sun, Xue Gao
Summary: Porous borocarbonitride (P-BCN) with enhanced crystallinity and improved N-B pair exposure was prepared using a simple KCl-assisted molten salt strategy, enabling efficient heterogeneous photocatalytic synthesis of benzazoles. The improved photocatalytic performance is attributed to the enhancement in charge separation and transmission, as well as the promotion of superoxide radical generation and oxidation ability. This work presents a green and efficient synthetic strategy towards benzazoles and other fine chemicals through metal-free heterogeneous photocatalysis.
CATALYSIS SCIENCE & TECHNOLOGY
(2021)
Review
Biochemistry & Molecular Biology
Siva S. S. Panda, Adel S. S. Girgis, Marian N. N. Aziz, Mohamed S. S. Bekheit
Summary: This article summarizes the recent developments in the synthesis of natural and synthetic spirooxindole-containing compounds from isatin or its derivatives, categorizing them based on their mentioned biological properties.
Article
Polymer Science
Mohammad Asad, Muhammad Nadeem Arshad, Abdullah M. Asiri, Mohammed M. Rahman, Snigdha Kumaran, Mohammed Musthafa Thorakkattil Neerankuzhiyil
Summary: Chitosan-bounded copper (chitosan-Cu) was utilized for the green synthesis of novel ferrocenated spiropyrrolidine hybrids. A one-pot three-component 1,3-dipolar cycloaddition reaction using tyrosine, glycine, and isatin derivatives was employed to form spiropyrrolidines from 1-(4-bromophenyl)-ferrocene-prop-2-en-1-one and azomethine ylides. The synthesized spiropyrrolidines showed good antibacterial activity against Gram-positive and Gram-negative bacterial strains.
Review
Polymer Science
Guravtar Singh Mann, Naved Azum, Anish Khan, Malik Abdul Rub, Md Imtaiyaz Hassan, Kisa Fatima, Abdullah M. Asiri
Summary: Global climate change has already caused various environmental effects and led to a shift in focus towards sustainable materials. Green composites, which combine renewable fibers with polymers, offer a wide range of applications and superior features compared to conventional materials.
Review
Biochemistry & Molecular Biology
Angela C. C. Spencer, Siva S. S. Panda
Summary: Bacterial DNA gyrase is a clinically-relevant target for the development of new antibacterials. However, currently used quinolones are becoming less effective due to drug resistance.
Article
Polymer Science
Aftab Aslam Parwaz Khan, Mallikarjunagouda B. Patil, Laxmibai P. Rathod, Shivalila G. Vader, Pankaj Raizada, Pardeep Singh, Maha M. Alotaibi, Mohammad Omaish Ansari, Anish Khan, Naved Azum, Malik Abdul Rub, Muhammad Nadeem Arshad, Abdullah M. Asiri
Summary: The study assessed the potential of nanocomposite membranes (NCMs) made of sodium alginate and embedded with synthesized zeolitic imidazole framework-8 (ZIF-8) as fillers for separating gaseous mixtures generated by methane reforming. ZIF-8 crystals were synthesized through hydrothermal synthesis, with sizes ranging from 50 to 70 nm. NCMs with 15% filler loading (synthesized ZIF-8) outperformed neat polymer membranes in terms of H-2 permeability and selectivity, achieving a purity of up to 95%. However, NCMs did not perform better than neat polymer membranes in separating gas mixtures. The combination of ZIF-8 and sodium alginate as fillers is a new and worth investigating.
Article
Polymer Science
Esraa M. Bakhsh, Sher Bahadar Khan, Nujud Maslamani, Ekram Y. Danish, Kalsoom Akhtar, Abdullah M. Asiri
Summary: In this study, CMC/CuO-TiO2 beads were developed as a catalyst for the reduction of organic and inorganic contaminants. These beads demonstrated excellent catalytic activity and stability.
Article
Polymer Science
Muhammad Tariq Saeed Chani, Khasan S. Karimov, Tahseen Kamal, Noshin Fatima, Mohammed M. Rahman, Abdullah M. Asiri
Summary: Polymeric rubber and organic semiconductor H2Pc-CNT composite-based shockproof deformable infrared radiation (IR) sensors were fabricated using a rubbing-in technique. The sensors showed decreased resistance and impedance when exposed to IR irradiation, and the temperature coefficients of resistance (TCR) were 1.2 and 1.1 for the surface-type and sandwich-type sensors, respectively. The high TCR value and novel composition of the H2Pc-CNT composite make these devices attractive for bolometric applications, and their easy fabrication and low-cost materials make them commercially viable.
Article
Chemistry, Physical
Tahir Ali Sheikh, Abdullah M. Asiri, Amna Siddique, Hadi M. Marwani, Md. Rezaur Rahman, Muhammad Nadeem Akhtar, Mohammed M. Rahman
Summary: A novel electrochemical current-potential (I-V) approach was developed using a highly calcined binary metal oxide (Er2O3@NiO) semiconductor nanocomposite to detect and degrade toxic chemicals in aqueous medium. The modified glassy carbon electrode based on this semiconductor nanocomposite showed selectivity towards m-tolyl hydrazine (m-Tolyl HDZN) and good affinity towards other interfering toxic chemicals. Analytical parameters were optimized and the limit of detection (LOD) for m-Tolyl HDZN was calculated.
Article
Materials Science, Multidisciplinary
H. Mohit, Sanjay Mavinkere Rangappa, Krittirash Yorseng, Suchart Siengchin, Hadi M. Marwani, Anish Khan, Abdullah M. Asiri
Summary: The effect of chemically treated and untreated water hyacinth/pineapple leaf, titanium carbide nanoparticles, Innegra, and carbon fabric reinforcement on the characteristics of polyester hybrid composites was studied. The chemically treated fibers showed excellent bonding with the fillers and textiles, as observed from various analysis techniques. The use of artificial neural network (ANN) for modeling the material characteristics was also investigated in this study.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Chemistry, Physical
Mohammad Asad, Muhammad Nadeem Arshad, Abdullah M. Asiri, Hadi M. Marwani, Khalid A. Alamry, Mohammad Mahboob Alam, Syed Nazreen, Ahmed A. Elhenawy, Mohammed M. Rahman
Summary: N-Acylated-2-pyrazolines (NA2Pyr) were synthesized using chalcone and hydrazine hydrate, and their structures were determined. A metal ion sensor for lead (Pb2+) was developed by combining a conducting coating binder (PEDOT:PSS) with a NA2Pyr modified electrode (NA2Pyr/GCE). The sensor exhibited high sensitivity and a wide linear dynamic range.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Biochemistry & Molecular Biology
Zunera Khalid, Syed Salman Shafqat, Hafiz Adnan Ahmad, Munawar Ali Munawar, Sadaf Mutahir, Safaa M. Elkholi, Syed Rizwan Shafqat, Rahila Huma, Abdullah Mohammed Asiri
Summary: Diabetes is a chronic metabolic disorder characterized by high blood sugar levels due to insulin deficiency or ineffective use. Alpha-glucosidase inhibitors are commonly used to control hyperglycemia, but can cause side effects. This study synthesized and tested a new series of compounds for their alpha-glucosidase inhibition potential. The compounds 14k and 14l showed strong inhibitory activity and in silico studies confirmed their interactions with the enzyme. This research provides potential candidates for the development of new antidiabetic drugs.
Article
Physics, Applied
Aftab Aslam Parwaz Khan, Z. Fadil, Pankaj Raizada, Pardeep Singh, Maha Alotaibi, Mohammad Omaish Ansari, Anish Khan, Abdullah M. Asiri, Chaitany Jayprakash Raorane
Summary: A monolayer anthracene-like nanostructure was studied through Monte Carlo simulations to determine its compensation temperature and magnetic hysteresis cycle. The effects of exchange coupling on compensation and transition temperatures were discussed. The study also investigated the magnetic hysteresis cycles and surface of multi-loop hysteresis with respect to strong exchange coupling and temperature parameters. This research has significant implications for multi-state memories and nanotechnology.
Review
Chemistry, Multidisciplinary
Umer Shahzad, Hadi M. Marwani, Mohsin Saeed, Abdullah M. Asiri, Mohammed M. Rahman
Summary: Due to their unique two-dimensional layered microstructure, MXenes are considered promising candidates for addressing energy and environmental issues, thanks to their numerous functionalities on the surface and excellent electrical, thermal, and optical features. Altering the dimensions, structure, surface chemistry, and chemical composition of MXenes can enhance their energy conversion and storage capabilities. Therefore, it is crucial to understand the relationship between structure and property from an applied perspective. This study reviews the synthesis, properties, and potential applications of MXenes and discusses their structural, chemical, optical, mechanical, and thermal properties, as well as their applications in photocatalysis, gas sensing, supercapacitors, electrocatalysis, and environmental remediation. It also highlights the progress and future prospects of MXene-based composites, providing valuable insights for scientists in academia and material sciences.
Article
Polymer Science
Khasan S. Karimov, Muhammad Tariq Saeed Chani, Noshin Fatima, Abdullah M. Asiri, Mohammed M. Rahman
Summary: Optimized surface-type impedimetric and capacitive proximity sensors have been fabricated on paper substrates using rubbing-in technology. These sensors can detect objects by sensing changes in impedance and/or capacitance when the object approaches, and they can be widely used in various fields due to their low cost, easy fabrication, and environmentally friendly materials.
Review
Chemistry, Multidisciplinary
Hafsah A. Klfout, Abdullah M. Asiri, Khalid A. Alamry, Mahmoud A. Hussein
Summary: Polybenzoxazine (PBz) is an excellent resin with diverse applications. The peculiar properties of benzoxazines have attracted the attention of researchers worldwide. However, petroleum-based benzoxazines are facing environmental concerns, leading to the research and development of bio-based alternatives. Bio-based polybenzoxazine, epoxy, and polysiloxane-based resins have gained interest in recent years due to their anticorrosion, eco-friendly, affordable, and low water absorption properties. This review provides an overview of polybenzoxazine, focusing on the advances in synthesizing bio-based polybenzoxazine, their properties, and their use in coating applications.
Article
Chemistry, Multidisciplinary
Xuemei Liu, Chaonan Cui, Shuoshuo Wei, Jinyu Han, Xinli Zhu, Qingfeng Ge, Hua Wang
Summary: This study presents a new strategy for designing efficient photocatalysts that can convert CO2 into hydrocarbons by utilizing synergistic catalytic sites. The findings provide a solution for the selective photocatalytic reduction of CO2 to CH4.
Article
Chemistry, Multidisciplinary
Chengxian Hu, Dan Wang, Lu Wang, Ying Fu, Zhengyin Du
Summary: A novel one-pot, three-component reaction conducted under electrochemical conditions was studied. The reaction involved 2-aminothiophenols, aldehydes, and malononitrile, using TBABF4 as an electrolyte and CuI as a catalyst. The proposed reaction mechanism suggested that CuI served as an electron relay. This method offers simplified operation, high atom economy, and mild reaction conditions.
Article
Chemistry, Multidisciplinary
Zhi Yang, Yu Chen, Linxi Wan, Yuxiao Li, Dan Chen, Jianlin Tao, Pei Tang, Fen-Er Chen
Summary: A highly enantioselective method for the complete hydrogenation of pyrimidinium salts using Ir/(S,S)-f-Binaphane complex as the catalyst was developed. This method provides easy access to fully saturated chiral hexahydropyrimidines, which are prevalent in many bioactive molecules. The reactions exhibit high yields and enantioselectivities under mild reaction conditions without additives. Successful application of this methodology in a continuous flow fashion further extends its practical utility.
Article
Chemistry, Multidisciplinary
Tina Jeoh, Jennifer Danger Nill, Wujun Zhao, Sankar Raju Narayanasamy, Liang Chen, Hoi-Ying N. Holman
Summary: In this study, the enzymatic hydrolysis of cellulose was investigated using real-time infrared spectromicroscopy. The spatial heterogeneity of cellulose was found to impact the hydrolysis kinetics. Hydration affected cellulose ordering, and Cel7A preferentially removed less extensively hydrogen bonded cellulose.
Article
Chemistry, Multidisciplinary
Tiphaine Richard, Walid Abdallah, Xavier Trivelli, Mathieu Sauthier, Clement Dumont
Summary: An effective method of grafting functionalities onto lignin based on glycerol carbonate has been developed using an efficient nickel-catalysed telomerisation reaction. This method allows lignin to have new reactive functions and reduces the glass transition temperatures of modified lignins, thereby expanding the application range of lignin-based resins.
Article
Chemistry, Multidisciplinary
Jing Qi, Xiyan Wang, Gan Wang, Srinivas Reddy Dubbaka, Patrick ONeill, Hwee Ting Ang, Jie Wu
Summary: This study presents a green and environmentally friendly approach for the synthesis of imides using electrocatalytic oxidation with H2O as the oxygen source. The method eliminates the need for toxic or expensive oxidants and achieves high yields under mild reaction conditions. It shows broad substrate compatibility and potential for industrial applications.
Article
Chemistry, Multidisciplinary
Babasaheb Sopan Gore, Lin-Wei Pan, Jun-Hao Lin, Yi-Chi Luo, Jeh-Jeng Wang
Summary: Here, we report a visible light-promoted intramolecular radical cascade reaction for the construction of fluorenol and naphthalene-fused cyclopropyl carbaldehyde derivatives. This method offers mild reaction conditions, a broad substrate scope, excellent step efficiency, and scalability, without the need for external chemical oxidants. The novelty of this protocol was demonstrated by synthesizing chrysene analogs and performing late-stage functionalizations.
Article
Chemistry, Multidisciplinary
Juho Antti Sirvio, Idamaria Romakkaniemi, Juha Ahola, Svitlana Filonenko, Juha P. Heiskanen, Ari Ammala
Summary: This article discusses the method of using supramolecular interaction between an aromatic hydrogen bond donor and lignin to achieve rapid delignification of softwood at low temperatures.
Article
Chemistry, Multidisciplinary
Yunyan Meng, Chunxiang Pan, Na Liu, Hongjiang Li, Zixiu Liu, Yao Deng, Zixiang Wei, Jianbin Xu, Baomin Fan
Summary: A novel visible light-driven synthesis method for 2,3-diamines has been developed, which has mild conditions, avoids the use of metal reagents, and can synthesize diamines and diols in one pot.
Article
Chemistry, Multidisciplinary
Mingqing Huang, Haiyang Huang, Mengyao You, Xinxin Zhang, Longgen Sun, Chao Chen, Zhichao Mei, Ruchun Yang, Qiang Xiao
Summary: A direct air-oxidized strategy for the synthesis of benzo[b]phosphole oxides was developed in this study. Arylphosphine oxides were transformed into phosphinoyl radicals, which were further combined with various alkynes to achieve the desired products. DFT calculations revealed the mechanism of phosphinoyl radical formation.
Article
Chemistry, Multidisciplinary
Anwei Wang, Jiayin Huang, Chunsheng Zhao, Yu Fan, Junfeng Qian, Qun Chen, Mingyang He, Weiyou Zhou
Summary: This study demonstrates an innovative strategy for the aerobic oxidation of C(sp(3))-H bonds using gamma-valerolactone. By optimizing the reaction conditions and utilizing specific catalysts, efficient oxidation of C(sp(3))-H bonds is achieved with good chemoselectivity in certain cases.
Article
Chemistry, Multidisciplinary
Shun Li, Likai Tong, Zhijian Peng, Bo Zhang, Xiuli Fu
Summary: Sulfide compounds show promise as electrocatalysts for water splitting, but their performance is limited by factors such as limited active sites and hindered substance transport. This study successfully prepared a high-entropy sulfide (ZnCoMnFeAlMg)(9)S-8, which reduced grain size and increased specific surface area, enabling the realization of a dual-functional catalyst with multiple catalytic sites. High entropy also modulated the electronic properties of sulfides, reducing the potential energy barrier for hydrolysis. This research introduces a new approach for functionalizing high entropy nanomaterials and improves the performance of water splitting catalysts.
