Article
Multidisciplinary Sciences
Maryam Khashaei, Leila Kafi-Ahmadi, Shahin Khademinia, Ahmad Poursattar Marjani, Ehsan Nozad
Summary: This study introduces a one-step and facile hydrothermal procedure to synthesize nickel(II) oxide nanoparticles. The as-prepared nanomaterials exhibit high efficiency, low toxicity, and cost-effectiveness as catalysts for organic compound synthesis. The synthesized catalysts are used in Biginelli multicomponent reactions (MCRs) to prepare 3,4-dihydropyrimidin-2(1H)-ones (DHPMs) with high yields under the present reaction conditions.
SCIENTIFIC REPORTS
(2022)
Article
Biochemistry & Molecular Biology
Giovanna Bosica, Fiona Cachia, Riccardo De Nittis, Nicole Mariotti
Summary: Multicomponent reactions offer economic and environmental advantages, with the Biginelli reaction being a significant method for synthesizing 3,4-dihydropyrimidin-2(1H)-ones (DHPMs). In this study, silicotungstic acid supported on Ambelyst-15 was used as a catalyst for the Biginelli reaction under solventless conditions, resulting in improved reaction yields.
Article
Multidisciplinary Sciences
Mahsa Sam, Mohammad G. Dekamin, Zahra Alirezvani
Summary: This newly designed multifunctional dendritic nanocatalyst shows promising catalytic activity for the synthesis of polyhydroacridines and polyhydroquinolines through one-pot multicomponent reactions. The catalyst's features include high efficiency, short reaction times, wide scope of substrates, easy separability and recyclability, as well as potential for extension to new two- and three-dimensional covalent organic frameworks with different applications.
SCIENTIFIC REPORTS
(2021)
Article
Polymer Science
Manpreet Kaur, Mayank, Deepak Bains, Gagandeep Singh, Navneet Kaur, Narinder Singh
Summary: Efficient multicomponent tandem polymerization (MCTP) has recently become a focus of interest. Synthesis of fluorescent non-conjugated polyamide gels using a newly developed magnetic catalyst under solvent free conditions resulted in high yields of high molecular weight products. Characterization through various techniques confirmed the structure of the prepared polyamide gels, showing great potential for this simple and efficient polymerization approach.
Article
Chemistry, Multidisciplinary
Maryam Alsadat Mazloum Tabaei, Abdolhamid Bamoniri, Bi Bi Fatemeh Mirjalili
Summary: This paper introduces an efficient method for the synthesis of 3,4-dihydropyrimidin-2(1H)-ones using nano-cellulose/BF3/Fe3O4 as a catalyst. The method offers advantages such as short reaction times, high efficiency, and room-temperature reaction conditions. The catalyst is characterized by various techniques and exhibits good recovery.
JOURNAL OF THE IRANIAN CHEMICAL SOCIETY
(2022)
Article
Polymer Science
Chaojiu Chen, Shiqian Qin, Xinlong Wang, Tao Luo, Xiuying Yang, Jinyang Wang, Shenggao Yin, Zongpei You, Xinyu Gao, Lin Yang
Summary: In this study, the flame retardancy of epoxy resin (EP) composites was improved by incorporating hydroquinone bis(diphenyl phosphate) (HDP) and tris(2-hydroxyethyl) isocyanurate (THEIC). The results showed that adding 15% HDP and 15% THEIC in the composite EP-4 had the best synergistic effect. The addition of HDP and THEIC effectively enhanced the carbon layer structure of the composite after combustion, leading to improved flame retardancy in the condensed phase.
Article
Chemistry, Multidisciplinary
Vahid Khakyzadeh, Ahmad Reza Moosavi-Zare, Sahra Sheikhaleslami, Amir Ehsani, Salbin Sediqi, Mohammad Rezaei-Gohar, Zahra Jalilian
Summary: By magnetizing water with an external magnetic field and using it as a solvent, boric acid as a catalyst, the green preparation of 3,4-dihydropyrimidin-2(1H)-ones showed advantages such as shorter reaction times, higher yields, and cleaner reaction profiles.
Article
Chemistry, Multidisciplinary
Zhihao Zhao, Hongguang Dai, Lan Shi
Summary: PFAMPS was synthesized and used as a heterogeneous catalyst for the Biginelli reaction with high yields and excellent recyclability. Compared to other catalysts, PFAMPS showed superior catalytic performance and stability.
Article
Chemistry, Organic
Parasar Kumar, Vikas D. Ghule, Srinivas Dharavath
Summary: Various energetic salts were obtained from inexpensive starting materials via a simple and efficient synthetic route. These compounds showed excellent detonation properties, high nitrogen content, high positive heats of formation, good thermostability, and remarkable insensitivity.
Article
Biochemistry & Molecular Biology
Maria Saleem Khan, Muhammad Asif Nawaz, Saquib Jalil, Faisal Rashid, Abdul Hameed, Asnuzilawati Asari, Habsah Mohamad, Atta Ur Rehman, Mehwish Iftikhar, Jamshed Iqbal, Mariya Al-Rashida
Summary: Ionic liquids and deep eutectic solvents are ideal alternatives to organic solvents in organic synthesis due to their green, sustainable, and easy-to-handle nature. In this study, deep eutectic solvents were used in the Biginelli reaction to synthesize potentially therapeutic compounds for neurological disorders.
BIOORGANIC CHEMISTRY
(2022)
Article
Chemistry, Medicinal
Maria Majellaro, Willem Jespers, Abel Crespo, Maria J. Nunez, Silvia Novio, Jhonny Azuaje, Ruben Prieto-Diaz, Claudia Gioe, Belma Alispahic, Jose Brea, Maria Loza, Manuel Freire-Garabal, Carlota Garcia-Santiago, Carlos Rodriguez-Garcia, Xerardo Garcia-Mera, Olga Caamano, Christian Fernandez-Masaguer, Javier F. Sardina, Angela Stefanachi, Abdelaziz El Maatougui, Ana Mallo-Abreu, Johan Aqvist, Hugo Gutierrez-de-Teran, Eddy Sotelo
Summary: The study presents and thoroughly characterizes a large collection of 3,4-dihydropyrimidin-2(1H)-ones as A(2B)AR antagonists, demonstrating their importance in cancer therapy. Through functional experiments and free energy perturbation studies, the structure-activity relationship of this chemotype was accurately modeled, with stereospecific binding confirmed by resolving the two most potent ligands into their enantiomers. Additionally, in vitro experiments showed significant antimetastatic effects of this pair of compounds in three prostate cancer cells.
JOURNAL OF MEDICINAL CHEMISTRY
(2021)
Article
Nanoscience & Nanotechnology
Pooja Rana, Ranjana Dixit, Shivani Sharma, Sriparna Dutta, Sneha Yadav, Bhavya Arora, Bhawna Kaushik, Pooja Rana, Rakesh K. Sharma
Summary: Atomically thin two-dimensional boron nitride nanosheets have been used as exceptional support matrixes in nanocatalysis research. In this study, a magnetic boron nitride nanosheet-based cobalt catalytic system was fabricated, showing remarkable catalytic activity in the synthesis of 3,4-dihydropyrimidin-2(1H)-ones/thiones. The hybrid material exhibited excellent characteristics such as ambient reaction conditions, high product yield, thermal and mechanical stability, as well as facile magnetic retrievability and efficient recyclability. This methodology has a wide range of applications and potential for designing next-generation 2D catalytic materials.
ACS APPLIED NANO MATERIALS
(2022)
Article
Chemistry, Physical
Mannar R. Maurya, Akhil Patter, Devesh Singh, Kaushik Ghosh
Summary: Diovandium(V) complex [(VO2)-O-V(sal-aebmz)] (1) immobilized on chloromethylated polystyrene (PS-Cl) has been used as catalyst in a single pot multicomponent Biginelli reaction, producing biologically active 3,4-dihydropyrimidin-2-(1H)-one (DHPM) under solvent-free conditions with H2O2 as oxidant. The optimized reaction conditions yield ca. 95% DHPMs.
Article
Chemistry, Multidisciplinary
Dipak S. Aher, Kiran R. Khillare, Laxmikant D. Chavan, Sunil G. Shankarwar
Summary: A highly reusable heterogeneous catalyst (PMo7W5/kaolin) was synthesized by impregnating tungsten-substituted molybdophosphoric acid onto acid-treated kaolin clay using the wetness impregnation method. The catalyst was characterized using various techniques and showed efficient catalytic activity in the synthesis of 3,4-dihydropyrimidin-2(1H)-ones via Biginelli reaction under solvent-free conditions. The 20% PMo7W5/kaolin catalyst exhibited significantly enhanced catalytic activity compared to other catalysts.
Article
Chemistry, Applied
Zhen Yao, Zhenli Luo, Yixiao Pan, Xin Zhang, Bohan Li, Lijin Xu, Peng Wang, Qian Shi
Summary: A metal-free tandem one-pot synthesis of 3,3-disubstituted 3,4-dihydroquinoxalin-2(1H)-ones has been achieved using visible-light photoredox catalysis. The method provides the desired products in high yields for various substrates, demonstrating great potential for practical applications.
ADVANCED SYNTHESIS & CATALYSIS
(2022)
Article
Biochemical Research Methods
Tahereh Boroushaki, Mohammad G. Dekamin, Seyyed Majid Hashemianzadeh, Mohammad Reza Naimi-Jamal, Mokhtar Ganjal Koli
Summary: Metal-organic frameworks have shown great potential as high-performance nanocarriers for drug storage and delivery due to their high internal surface area, low toxicity, controlled drug release, and exceptional biocompatibility. In this study, molecular dynamics simulations were used to investigate the loading of three anti-cancer drugs inside UiO-66 nanocarrier cavities at the atomic level. The results showed that drug concentration has a significant impact on the drug loading, and Temozolomide demonstrated a stronger interaction energy and thermodynamic tendency to load inside UiO-66 compared to the other drugs. The density distribution study revealed that all drugs mainly loaded on metal centers. In terms of drug mobility, Temozolomide showed lower mobility due to its stronger interaction with UiO-66.
JOURNAL OF MOLECULAR GRAPHICS & MODELLING
(2022)
Article
Multidisciplinary Sciences
Negin Rostami, Mohammad G. Dekamin, Ehsan Valiey, Hamidreza Fanimoghadam
Summary: A bio-based material, cellulose grafted to chitosan by EDTA (Cs-EDTA-Cell), was reported in this research. The Cs-EDTA-Cell network exhibited higher thermal stability and acted as a multifunctional organocatalyst for the synthesis of 2-amino-4H-pyran derivatives. The nanocatalyst showed excellent catalytic activity and could be easily recovered and reused.
SCIENTIFIC REPORTS
(2022)
Article
Multidisciplinary Sciences
Babak Fattahi, Mohammad G. Dekamin
Summary: This article presents the preparation and characterization of a supramolecular Fe3O4/SiO2 decorated trimesic acid-melamine (Fe3O4/SiO2-TMA-Me) nanocomposite, which combines properties of different materials to create a structurally unique hybrid material. The authors focused on designing, synthesizing, and evaluating a magnetic organocatalyst with acidic functional-groups for the synthesis of biologically important imidazole derivatives. The introduced nanomaterial was characterized using various techniques, and it was found that the magnetic catalytic system could be recycled and reused for multiple runs while maintaining high catalytic activity under optimized conditions.
SCIENTIFIC REPORTS
(2023)
Article
Multidisciplinary Sciences
Amir Hossein Fattahi, Mohammad G. Dekamin, James H. Clark
Summary: Ball-milled seashells in the form of nano-biocomposite catalyst with fixed CO2 in its aragonite microcrystalline structure were used to optimize the synthesis of isoamyl acetate. The seashells nano-biocomposite proved to be an excellent catalyst for the green and environmentally-friendly synthesis of isoamyl acetate under solvent-free conditions. The optimized conditions resulted in a high yield of 91%, with the advantages of using an inexpensive and easily prepared nano-biocomposite material without hazardous reagents or corrosive acids.
SCIENTIFIC REPORTS
(2023)
Article
Multidisciplinary Sciences
Peyman Shakib, Mohammad G. Dekamin, Ehsan Valiey, Shahriar Karami, Mohammad Dohendou
Summary: In this study, a D-(-)-alpha-phenylglycine-functionalized magnetic nanocatalyst (Fe3O4@SiO2@PTS-APG) was successfully synthesized for the green synthesis of polyhydroquinoline and 1,4-dihydropyridine derivatives. The nanocatalyst was characterized by various spectroscopic techniques. The Fe3O4@SiO2@PTS-APG nanocatalyst exhibited high performance as a heterogeneous catalyst for the Hantzsch condensation under ultrasonic irradiation, achieving a yield of over 84% in just 10 minutes. The nanocatalyst was easily prepared from commercially available, low toxic, and thermally stable precursors, making it cost-effective and environmentally friendly.
SCIENTIFIC REPORTS
(2023)
Article
Multidisciplinary Sciences
Fatemeh Salehzadeh, Maryam Esmkhani, Mahsa Zallaghi, Shahrzad Javanshir, Mohammad G. Dekamin
Summary: A novel magnetic heterogeneous catalyst was created by immobilizing copper ions onto l-arginine functionalized CuFe2O4@SiO2. The catalyst was characterized using various techniques including FT-IR, XRD, FE-SEM, TEM, and EDX. It was found that the catalyst could efficiently facilitate the ultrasonic-assisted synthesis of 1,2,3-triazoles through a one-pot three-component reaction. The catalyst also exhibited good reusability, with no significant loss of activity observed after five cycles.
SCIENTIFIC REPORTS
(2023)
Article
Chemistry, Physical
Babak Fattahi, Mohammad G. Dekamin
Summary: This study designed and prepared a new cross-linked chitosan by G1 dendrimer from melamine terminated by citric acid groups to support Cu(II) nanoparticles (CS@CA-Me-CA@Cu). The prepared nanocomposite was characterized using various techniques and showed higher thermal and chemical stability. It was also used as a green heterogeneous catalyst for the preparation of 2-aminobenzothiazole derivatives.
COLLOID AND INTERFACE SCIENCE COMMUNICATIONS
(2023)
Article
Multidisciplinary Sciences
Zahra Akhlaghi, Mohammad R. Naimi-Jamal, Leila Panahi, Mohammad G. Dekamin, Bahareh Farasati Far
Summary: 4H-pyrans with ketone and aldehyde groups were synthesized through a mechanochemical multicomponent reaction (MCR) using an amine-functionalized metal-organic framework (MOF) Cu2(NH2-BDC)2(DABCO) as a heterogeneous catalyst, resulting in good to excellent yields.
Article
Multidisciplinary Sciences
Rahman Beiranvand, Mohammad G. Dekamin
Summary: The Trimesic acid-functionalized chitosan (Cs/ECH-TMA) material was synthesized by using inexpensive and commercially available chitosan (Cs), epichlorohydrin (ECH) linker and trimesic acid (TMA). The Cs/ECH-TMA material was characterized using EDX, FTIR, FESEM, and XRD analysis. It was successfully used as a multifunctional heterogeneous and sustainable catalyst for the synthesis of medicinally important polyhydroquinoline (PHQ) and polyhydroacridinedione (PHA) scaffolds.
Article
Chemistry, Applied
Negin Rostami, Mohammad G. Dekamin, Ehsan Valiey
Summary: A Cs-EDTA-Cell material was prepared by grafting cellulose to chitosan using ethylenediaminetetraacetic acid. Characterization techniques revealed that Cs-EDTA-Cell has enhanced thermal stability and contains appropriate active sites to act as a nano-scale multi-functional organocatalyst. The Cs-EDTA-Cell network demonstrated excellent catalytic activity, reusability, and environmentally-friendly synthesis of polyhydroquinoline and 1,8-dioxo-decahydroacridine derivatives.
CARBOHYDRATE POLYMER TECHNOLOGIES AND APPLICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Mohammad Dohendou, Mohammad G. Dekamin, Danial Namaki
Summary: A supramolecular palladium(ii) nanocatalyst supported on modified chitosan by dl-methionine using an ethylenediaminetetraacetic acid linker was designed and prepared. The catalytic activity of this nanocomposite was investigated in the Heck cross-coupling reaction for the synthesis of biologically active cinnamic acid ester derivatives, showing high efficiency and environmental friendliness.
NANOSCALE ADVANCES
(2023)
Article
Chemistry, Multidisciplinary
Alireza Malihishoja, Mohammad G. Dekamin, Mohammad Eslami
Summary: In this study, magnetic polyborate nanoparticles (MPBNPs) were prepared from boric acid using ball-milling and characterized by various spectroscopic, microscopic, and analytical methods. These MPBNPs were then explored as a green and highly efficient catalyst in the synthesis of tetra-substituted imidazoles and the oxidation of benzil or benzoin, aromatic aldehydes, primary amine, and ammonium acetate in EtOH. The use of non-toxic reactants, a facile procedure, high yields of desired products, and a green solvent are the advantages of this protocol.
Article
Chemistry, Multidisciplinary
Mohammad Dohendou, Mohammad G. G. Dekamin, Danial Namaki
Summary: A novel supramolecular Pd(ii) catalyst, named Pd@ASP-EDTA-CS, was prepared for the first time by supporting it on chitosan grafted by l-asparagine and an EDTA linker. The characterization of the Pd@ASP-EDTA-CS nanocomposite was performed using various spectroscopic, microscopic, and analytical techniques. The catalyst exhibited high catalytic activity, excellent thermal stability, easy recovery by filtration, more than five cycles of reusability, biodegradability, and efficient Heck cross-coupling reactions using low-loaded Pd.
NANOSCALE ADVANCES
(2023)
Article
Chemistry, Multidisciplinary
Tahereh Boroushaki, Mokhtar Ganjali Koli, Rahime Eshaghi Malekshah, Mohammad G. Dekamin
Summary: This research focuses on the computational analysis of drug release from UiO-66 as a metal-organic framework (MOF). It studies the release patterns of temozolomide, alendronate, and 5-fluorouracil.
Article
Chemistry, Multidisciplinary
Shirin Bondarian, Mohammad G. Dekamin, Ehsan Valiey, M. Reza Naimi-Jamal
Summary: In this study, a cost-effective and convenient method was designed to support Cu(ii) nanoparticles on a modified chitosan backbone. The resulting nanomaterial showed high catalytic efficiency in promoting multicomponent cascade reactions and could be recycled for multiple cycles.
Article
Chemistry, Multidisciplinary
Zihan Ma, Lishuang Wang, Tingting Chen, Guangning Wang
Summary: In this study, two kinds of 3D self-doped (N/O) lilac-based and coriander-based porous carbons with high performance have been prepared.
NEW JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Qin Wang, Yun-Fan Yan, Jiao-Lin Weng, Ying Huang, Fu Yang, Hao-Hui Xie, Fei Tan, Fa-Kun Zheng, Jian-Gang Xu
Summary: Balancing energy and mechanical sensitivities is a challenging issue in the field of energetic materials. This study constructed a 3D energetic metal-organic framework with nitrogen-rich ligand and NO3- anions. The framework demonstrated high stability, energy density, and excellent mechanical sensitivities, making it a potential insensitive energetic material.
NEW JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Marrium Saeed, Urooj Kamran, Amina Khan, Md Irfanul Haque Siddiqui, Hasan Jamal, Haq Nawaz Bhatti
Summary: In this study, magnesium-aluminum layered double hydroxides (Mg-Al-LDH) were synthesized using an environmentally friendly hydrothermal technique for adsorbing the dye reactive green 5 (RG5). To improve the adsorption capability, composites were prepared by combining Mg-Al-LDH with low-cost Mangifera indica stone biomass (MISB). The results showed that the composites had high adsorption capacities for RG5 dye and could be regenerated.
NEW JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Xuanlin Zhan, Xiaojie Li, Yunyan Zeng, Siyan Jiang, Chao Pan, Shiyu Pan, Jiaquan Huang, Heqian Zhang, Zhiwei Qin
Summary: This study reports on the potential prospects of natural products derived from the rhizosphere for the development of antibiotics and herbicides, as well as the advancements in cultivating a mutant strain that produces a substantial quantity of lydicamycins, a potent family for herbicide development.
NEW JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Jie Zhu, Jiangtao Yu, Linhua Zhu, Xiaoxiao Yu, Jixing Liu, Yanhong Chao, Jingzhou Yin, Peiwen Wu, Jian Liu, Wenshuai Zhu
Summary: This study successfully demonstrates the 3D printing of attapulgite monoliths and investigates the influence of thermal treatment on their properties. The thermal treated monoliths show superior catalytic performance at low temperatures.
NEW JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Yanzhu Ye, Yixiang Ye, Jiannan Cai, Zhongshui Li, Shen Lin
Summary: In this paper, a novel Pt/CoP/C photo-electro synergistic catalyst was successfully synthesized and its performance was investigated. The catalyst exhibited excellent photo-electro catalytic performance, with significantly higher hydrogen production compared to a commercial catalyst. The introduction of cobalt phosphide and the existence of Co3O4 were identified as key factors for enhancing the catalytic activity.
NEW JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Nurul Hidayah Abu Bakar, Wan Norfazilah Wan Ismail, Hartina Mohd Yusop, Noreen Farzuhana Mohd Zulkifli
Summary: Hydrophobic coatings inspired by the lotus effect have gained popularity for their ability to solve various problems. The sol-gel method, utilizing silica, alumina, and titania, is explored as an environmentally friendly approach to produce water-based hydrophobic coatings. This study focuses on producing water-based hydrophobic coatings for cotton and polyester fabrics using a one-step sol-gel method. The coated fabrics exhibited improved hydrophobic properties, altered surface morphologies, and lower air permeability compared to uncoated fabrics. TEOS-PDMS coating provides a promising approach for enhancing the hydrophobic and surface properties of cotton and polyester fabrics.
NEW JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Nikita Belko, Hanna Maltanava, Anatol Lugovski, Polina Shabunya, Sviatlana Fatykhava, Evgeny Bondarenko, Pavel Chulkin, Sergey Poznyak, Michael Samtsov
Summary: This study investigates the difference in electrochemical behavior between rhodamine B hydrazide and rhodamine B acylhydrazone, and finds that rhodamine B acylhydrazone exhibits higher reversibility in electrooxidation. These results can be applied for developing new sensors with desired electrochemical properties.
NEW JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Showket Ahmad Bhat, Mohd Ikram
Summary: In this study, 0-3 particulate multiferroic composites were synthesized and characterized. The composites exhibited excellent ferroelectric and ferromagnetic properties, as well as high piezoelectric strain and magnetoelectric coupling effects.
NEW JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Carla Gomes, Mariana Costa, Susana M. M. Lopes, Bernardo Albuquerque Nogueira, Rui Fausto, Jose A. Paixao, Teresa M. V. D. e Melo, Luisa M. D. R. S. Martins, Marta Pineiro
Summary: The development of sustainable processes requires the integration of green chemistry principles. In this study, a solvent-free synthesis method was developed to prepare new copper catalysts, which efficiently catalyze cycloaddition reactions under solvent-free mechanochemical conditions. Through this process, the principles of atom economy, reduction of solvents and auxiliaries, design for energy efficiency, and reduction of derivatives and catalysis are combined.
NEW JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Zhihua Liu, Jinzhe Li, Jianguo Zhou
Summary: This study demonstrates the enhancement of photoelectrochemical activity of BiFeO3 photoelectrodes through ion modification, which increases visible light absorption and active area, leading to improved PEC water splitting performance.
NEW JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Yisheng Zhang, Wensong Li, Jing Li, Fang Li, Wei Xue, Xinqiang Zhao, Yanji Wang
Summary: Pt/C and SO42-/ZrO2 were used as catalysts for the synthesis of p-aminophenol through the catalytic transfer hydrogenation of nitrobenzene in water with formic acid as the hydrogen source. The optimal Pt loading for PAP selectivity was found to be 1 wt%. The presence of different valence states of Pt affected both the nitrobenzene hydrogenation and formic acid decomposition. Among different solid acid catalysts tested, SO42-/ZrO2 exhibited the highest catalytic activity for p-aminophenol formation. Under the optimized reaction conditions, the conversion of nitrobenzene reached 80.0%, with a selectivity of 47.6% for p-aminophenol.
NEW JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Pradyota Kumar Behera, Papita Behera, Amlan Swain, Santosh Kumar Sahu, Ajeena Sahoo, Laxmidhar Rout
Summary: We have developed a simple and direct method for the synthesis of diaryl ether using an oxygen bridged bimetallic CuMoO4 nanocatalyst under mild reaction conditions. The catalyst exhibited tolerance towards a wide range of substrates with various functional groups. It is efficient and recyclable. This methodology allows easy access to nitrofen derivatives (herbicides) from unactivated 2,4-dichlorophenol, which are important for agriculture and pharmaceuticals.
NEW JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Yihua Fu, Yan Zhang, Changwei Hu, Zhishan Su
Summary: The mechanism of the reaction between CO2 and styrene oxide for cyclic carbonate was revealed using density functional theory calculations. The noncatalytic reaction occurred via a concerted mechanism, while in the presence of guanidine and tetrabutylammonium iodide (TBAI) co-catalysts, the epoxide ring-opening by nucleophilic attack of an iodide anion was predicted to be the rate-determining step. Guanidine acted as the H-bond donor to activate styrene oxide, facilitating the reaction with a lower activation barrier.
NEW JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Saikat Khamarui, Sirshendu Ghosh
Summary: Copper nanorods (Cu-NRs) exhibit significant plasmonic behavior and can act as efficient catalysts in redox processes and coupling. A benign decarboxylative approach, utilizing localized surface plasmon resonance (LSPR) assisted catalysis with Cu-NRs, has been developed for the production of alkane analogues from alkyl carboxylic acids under visible light. The catalyst shows a broad substrate scope and high functional group tolerance, without the need for an external oxidant or proton source. A plausible mechanism for this recyclable nano-catalyst has also been proposed based on control experiments.
NEW JOURNAL OF CHEMISTRY
(2024)
