Article
Chemistry, Applied
Seyed Mohammad Hossein Shirazi, Javad Mokhtari, Zohreh Mirjafary
Summary: The study introduced a novel approach for the preparation of abiraterone drug using a new heterogeneous palladium catalyst Pd-NPs@Zn-MOF, synthesized by encapsulation in nanoporous metal-organic framework Zn-MOF under temperature control program. The Pd-NPs@Zn-MOF was characterized by various techniques, including TEM, XRD, BET, ICP-OES, and XPS.
APPLIED ORGANOMETALLIC CHEMISTRY
(2022)
Article
Chemistry, Organic
Siba P. Midya, Subal Mondal, Abu S. M. Islam, Ambreen Rashid, Sahidul Mondal, Ankan Paul, Pradyut Ghosh
Summary: Here, we present a room-temperature catalytic pathway for the synthesis of 1,3,5-tri(het)aryl derivatives from nitroalkenes using simple Pd(OAc)(2). This newly developed method forms C-C bonds in a cascade manner starting from a pallado-Morita-Baylis-Hillman (MBH) type adduct. The broad substrate scopes, functional group tolerance, and different aryl-substituted benzene derivatives make this method more attractive. Furthermore, the isolation of intermediates and DFT studies provide important insights into the mechanism of the catalytic cycle.
Article
Chemistry, Physical
Yong Zhao, Zhongning Huang, Lianmeng Wang, Xiangyu Chen, Yan Zhang, Xiuqin Yang, Dawei Pang, Jianxin Kang, Lin Guo
Summary: The study successfully prepared amorphous Pd(II) complex solid spheres loaded with Pd nanoparticles using a simple and gentle method, and then coated a thin mesoporous SiO2 shell on the surface. The combination of Pd(II) and Pd(0) provided a new approach for the enhanced catalytic performance of Pd(II-0)@m-SiO2 catalyst in Suzuki reactions.
Article
Chemistry, Physical
Mingzhong Cai, Rong Liu, Caifeng Xu, Bin Huang
Summary: Pd(OAc)(2)/XPhos-SO3Na in a mixture of poly(ethylene glycol) (PEG-400) and water has been demonstrated as a highly efficient catalyst for the cyanation of aryl chlorides with potassium ferrocyanide. The catalyst can be easily recycled and reused at least six times without any apparent loss of catalytic efficiency, showing good potential for practical applications.
Article
Chemistry, Multidisciplinary
Seema P. P. Patil, Sanjay N. N. Jadhav, Firoz A. A. Inamdar, Mohd Aatif Ameen, Chandrashekhar V. V. Rode, Archana S. S. Rajmane, Arjun S. S. Kumbhar
Summary: In this study, a Pd nanoparticle immobilized on an amine-functionalized LDH catalyst (PdNP@NH2LDH-Al-MCM-41) was developed for cross-coupling reactions. The catalyst was prepared by grafting palladium onto the support using NH2-LDH-Al-MCM-41 in acetone. Characterization techniques such as FT-IR, SEM, TGA, TEM, and XPS were used to analyze the prepared catalyst. The catalytic efficiency of the PdNPs@NH2-LDH-Al-MCM-41 catalyst was demonstrated through the Suzuki-Miyaura cross-coupling reaction, showing good to excellent activity, recoverability, and stability.
Article
Chemistry, Inorganic & Nuclear
Xu Jiang, Mehdi Kiasadegh
Summary: A novel recyclable metal-organic framework catalyst was synthesized and applied in the Suzuki-Miyaura reaction, achieving high yields of biaryl derivatives. The catalyst exhibited excellent catalytic efficiency and reusability.
JOURNAL OF ORGANOMETALLIC CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Anindita Dewan, Manashi Sarmah, Prantika Bhattacharjee, Pankaj Bharali, Ashim J. Thakur, Utpal Bora
Summary: This study reports the design, synthesis, and application of naturally occurring cellulose from agro waste pomegranate peel as a novel support for active biogenic Pd nanoparticles for Suzuki-Miyaura and Sonogashira cross-coupling reactions at room temperature. The cellulose matrix enables well dispersion of Pd nanoparticles over the support to generate Pd@cellulose, exhibiting excellent catalytic activity and recyclability under ligand-free mild reaction conditions. The synthesized cellulose nanofibers and Pd-anchored heterogeneous nanofibers were characterized through various analytical techniques.
SUSTAINABLE CHEMISTRY AND PHARMACY
(2021)
Article
Chemistry, Applied
Wenhua Lin, Liping Zhang, Yanping Ma, Tongling Liang, Wen-Hua Sun
Summary: The sterically hindered 2-iminopyridine derivatives and their palladium chlorides complexes efficiently catalyze the Suzuki-Miyaura coupling reaction in aqueous solution, with good substrate scope and reusability for multiple batches. The spontaneous separation of coupling products in the aqueous medium adds to the process's appeal, while the catalytic performance can be significantly influenced by UV irradiation due to the photoisomerization of the catalysts' azo units. Overall, these titled palladium complexes offer a green, sustainable, cost-effective, and convenient method for synthesizing SMC products at a multi-gram scale.
APPLIED ORGANOMETALLIC CHEMISTRY
(2022)
Article
Materials Science, Multidisciplinary
Saeed Bahadorikhalili, Leila Ma'mani, Hosein Lijan, Mohammad Mahdavi
Summary: A novel nanocatalyst, gamma-Fe2O3@SiO2(CH2)(3)-HPBM-Pd, was designed and synthesized for Mizoroki-Heck and Suzuki-Miyaura crosscoupling reactions, showing excellent activity and high reusability with a catalyst turnover number of 4600 in 10 sequential runs.
MATERIALS TODAY COMMUNICATIONS
(2021)
Article
Chemistry, Physical
Yuzhi Sun, Penghui Zhang, Yang Liu, Shang Wu, Quanlu Yang
Summary: A highly efficient heterogeneous catalyst (Pd@Fun-PGS) was successfully prepared by immobilizing palladium on the surfaces of palygorskite through a simple method. The catalyst exhibited high catalytic activity for a wide scope of Suzuki-Miyaura coupling reactions in water without phosphine ligand under mild conditions. It showed good recyclability and stability, making it promising for applications in organic synthesis and catalysis.
REACTION KINETICS MECHANISMS AND CATALYSIS
(2023)
Article
Chemistry, Multidisciplinary
Lingyu Zhang, Siyu Long, Huibin Jiao, Zhuoyue Liu, Ping Zhang, Aiwen Lei, Wei Gong, Xianglin Pei
Summary: In this study, a highly dispersed palladium nano-catalyst was successfully prepared using cellulose as a raw material. The cellulose microspheres with nanoporous structure and rich -OH groups as a carrier greatly promoted the dispersion of palladium nanoparticles and the diffusion and exchange of reactants, resulting in improved catalytic activity.
Article
Chemistry, Applied
Hao Jin, Chi Zhang, Pingwei Liu, Xin Ge, Shaodong Zhou
Summary: A Schiff base hollow covalent organic framework (COF) was successfully used to anchor Pd(II) and synthesize a highly efficient Pd@COF-TB nanocatalyst. The Pd@COF-TB catalyst exhibited good catalytic performance in Suzuki-Miyaura coupling reactions and could be conveniently recovered and reused.
APPLIED ORGANOMETALLIC CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
P. S. Pharande, G. S. Rashinkar, D. M. Pore
Summary: A novel cellulose-supported Schiff base Pd(II) complex was successfully designed and synthesized, showing high catalytic activity and reusability in the Suzuki Miyaura cross-coupling of phenyl boronic acid and aryl halides. The method exhibited high TONs and TOFs, low catalyst loading, and the synthesis of novel biphenyl derivatives.
RESEARCH ON CHEMICAL INTERMEDIATES
(2021)
Article
Polymer Science
Laura Riva, Gloria Nicastro, Mingchong Liu, Chiara Battocchio, Carlo Punta, Alessandro Sacchetti
Summary: This article highlights the importance of designing and synthesizing durable heterogeneous catalysts from renewable sources derived from biomass waste. It presents an efficient method for loading Pd(II) ions on a cellulose-based organic support, as well as the application and recycling performance of this support in Suzuki-Miyaura coupling reactions.
Article
Chemistry, Inorganic & Nuclear
Yuanyuan She, Xuanyan Liu, Jie Yin, Wenwei Hu, Majid Mohammadnia
Summary: By utilizing 2,3,7,8-Phenazinetetraamine organic ligands, a novel metal-organic framework [CuPTA & BULL;2H2O]n was synthesized and characterized. The MOF was used as a catalyst for the Suzuki-Miyaura cross-coupling reaction to synthesize biphenyl derivatives. It exhibited advantages such as good openness, biocompatibility, high product yields, and good reversibility. The feasibility of its recoverability and multiple reusability was also checked, which could be environmentally and economically beneficial.
INORGANIC CHEMISTRY COMMUNICATIONS
(2023)
Article
Environmental Sciences
M. K. Rajput, M. Konwar, D. Sarma
Summary: This study demonstrates the potential of ultrasonication-assisted extraction of toxic lead ions from aqueous systems using imidazolium-based ionic liquids as sole extracting agents, followed by the use of salting-out agents to reduce the release of IL cations into the aqueous phase.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2022)
Article
Engineering, Environmental
Mohit Kumar Rajput, Manashjyoti Konwar, Diganta Sarma
Summary: A liquid-liquid extraction methodology using a novel green hydrophobic deep eutectic solvent (DES) ChCl-THY(1:4) was developed for efficient removal of Cr(VI) from contaminated water. The ChCl-THY(1:4) showed >95% extraction efficiency for high and low concentration of Cr(VI) under optimized conditions, and could be regenerated with 0.1 M NaOH for further extraction cycles. Characterization of the DES was done using H-1 NMR and FTIR spectroscopy, revealing potential interaction mechanisms between components.
WATER ENVIRONMENT RESEARCH
(2021)
Article
Chemistry, Multidisciplinary
Anirban Garg, Roktopol Hazarika, Nilakshi Dutta, Bidyutjyoti Dutta, Diganta Sarma
Summary: A bio-waste derived catalyst from curd whey was utilized for the synthesis of 4-aryl-NH-1,2,3-triazole under mild conditions. The method is versatile, cost-effective, and allows for the recycling of the solvent-catalyst combination for multiple cycles without significant loss in catalytic efficiency.
Article
Materials Science, Biomaterials
Hanan Mohamed Fathy Elnagdy, Nishi Gandha Gogoi, Jyotirekha G. Handique, Diganta Sarma
Summary: A novel series of pyrazole analogs was synthesized through condensation reaction between 5-amino-1H-pyrazole-4-carbonitrile derivatives and carbonyl compounds in acidic media, catalyzed by CuO-NPs synthesized under green condition using tea leaves extract as reducing agent. The newly developed pyrazole compounds showed better antioxidant activity than Trolox, with 11 out of 15 compounds exhibiting improved properties.
Article
Chemistry, Organic
Manashjyoti Konwar, Munmi Saikia, Roktopol Hazarika, Diganta Sarma
Summary: An efficient and simple protocol for synthesizing pyrazoles and phthalazin-1 (2H)-ones has been developed using a common precursor hydrazines catalyzed by nickel chloride. The reactions take place in water at room temperature, offering advantages such as low-cost catalyst, green solvent, relatively shorter reaction time, and superior product yield.
TETRAHEDRON LETTERS
(2022)
Article
Chemistry, Organic
Bidyutjyoti Dutta, Nilakshi Dutta, Apurba Dutta, Montu Gogoi, Sanjay Mehra, Arvind Kumar, Kalyanjyoti Deori, Diganta Sarma
Summary: A bifunctional ionic liquid has been designed and explored as a catalyst for the synthesis of 2-phenylquinazolin-4(3H)-ones. The reaction can be completed in 3.5 minutes using microwave irradiation. In addition, the ionic liquid was used to assist the oxidation of benzyl alcohol to aldehyde without the need for metal catalysts, solvents, and bases. The multifunctionality of the ionic liquid was further confirmed in the synthesis of two Wnt pathway antagonists.
JOURNAL OF ORGANIC CHEMISTRY
(2022)
Article
Chemistry, Organic
Nilakshi Dutta, Bidyutjyoti Dutta, Apurba Dutta, Bipul Sarma, Diganta Sarma
Summary: An efficient and simple copper catalytic system has been developed for the synthesis of medicinally important 2-substituted quinazoline-4(3H)-ones and 2-substituted quinazolines. The protocol utilizes 2-aminobenzonitrile and benzyl alcohol derivatives, as well as 2-aminobenzylamine and benzaldehyde derivatives, and mild oxidant H2O2, resulting in excellent product yields. The versatility of the protocol is demonstrated through gram-scale syntheses.
ORGANIC & BIOMOLECULAR CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Priyanka Gogoi, Bishal Bhattacharyya, Vishal Chakravorty, Anirban Garg, Priyanuj Krishnann Hazarika, Kalyanjyoti Deori, Diganta Sarma
Summary: In this study, nanostructured ZnC2O4.2H(2)O with irregular sheet-like morphology was synthesized through a simple hydrothermal procedure. The synthesized ZnC2O4.2H(2)O nanocrystal proved to be highly stable and served as an efficient recyclable catalyst for azide-alkyne cycloaddition (AAC) reaction. This catalytic protocol exhibited high efficiency and versatility, providing regioselective 1,4-disubstituted 1,2,3-triazoles with good to excellent yields for various aromatic/aliphatic azide and alkyne substrates under mild conditions. The developed methodology also offered sustainability by allowing in-situ generation of azides from their precursors, and outperformed most state-of-the-art copper-free and zinc-based catalysts.
Article
Chemistry, Multidisciplinary
Jasmin Sultana, Bidyutjyoti Dutta, Sanjay Mehra, Shahnaz S. Rohman, Arvind Kumar, Ankur K. Guha, Diganta Sarma
Summary: A solvent-free methodology utilizing starch capped copper nanoparticles (SCuNPs) has been developed for oxidative [3+2] azide-olefin cycloaddition reactions, producing a variety of disubstituted and trisubstituted 1,2,3-triazoles. The mechanism of triazole formation was validated through DFT calculations, showing that the process proceeds through an exergonic pathway with manageable activation barriers.
Article
Chemistry, Organic
Swadhin Chetia, Samprity Sarmah, Apurba Dutta, Diganta Sarma
Summary: A copper acetate monohydrate catalyzed protocol for the construction of quinazoline derivatives and quinolines analogues via dehydrogenative coupling of 2-aminoaryl methanols and nitriles is developed. The reaction proceeded in toluene at 110 degrees C for 5 h without the requirement of inert condition, external additives, and ligands.
EUROPEAN JOURNAL OF ORGANIC CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Bidyutjyoti Dutta, Priyanuj Krishnann Hazarika, Pranjal Saikia, Surajit Konwer, Lakhyajyoti Borthakur, Diganta Sarma
Summary: A multifunctional room temperature ionic liquid [DDQM][TFSI] has been designed and its properties have been investigated for its use as an electrolyte. The RTIL in its composite form with reduced graphene oxide powder (rGO) exhibits superior catalytic properties and good charge-discharge rate. It also shows excellent specific capacitance, making it a potential active electrode material for supercapacitor devices. Moreover, the RTIL demonstrates excellent thermal properties and catalytic activity for the synthesis of 4-aryl-NH-1,2,3-triazoles in a short amount of time under metal/ligand/external acid-base free conditions incorporating electromagnetic radiation (EMR).
NEW JOURNAL OF CHEMISTRY
(2023)
Article
Nanoscience & Nanotechnology
Apurba Dutta, Priyanka Trivedi, Praveen Singh Gehlot, Dipshikha Gogoi, Roktopol Hazarika, Pankaj Chetia, Arvind Kumar, Amrita Kashyap Chaliha, Vinita Chaturvedi, Diganta Sarma
Summary: A convenient methodology for the synthesis of quinazolinone-triazole hybrids has been developed, and their anti-tubercular activity has been evaluated. Several compounds displayed promising activity against TB, suggesting their potential as drug candidates.
ACS APPLIED BIO MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Priyanuj Krishnann Hazarika, Priyanka Gogoi, Roktopol Hazarika, Kalyanjyoti Deori, Diganta Sarma
Summary: A novel and sustainable method for constructing medicinally active compounds, 4-aryl-1,2,3-(NH)-triazoles, using Ni(OH)(2)-ZnO nanostructured mixed crystals has been developed. The one-pot multicomponent synthesis in PEG-400 solvent gives nanosheet-like reusable catalysts, which are highly efficient, economical, and tolerant to a wide range of substrates with excellent yields.
MATERIALS ADVANCES
(2022)
Article
Chemistry, Multidisciplinary
Soniya Agarwal, Apurba Dutta, Diganta Sarma, Kalyanjyoti Deori
Summary: A promising strategy for the synthesis of pharmaceutically important scaffold 2,3-dihydroquinazolin-4(1H)-ones through heterogeneous catalysis employing the principle of multicomponent reaction has been presented in this paper. The researchers designed and synthesized NiFe-Fe2O3 catalyst and successfully prepared NiFe alloy nanoparticles with a mean diameter of 3.57 nm to be used in the synthesis of 2,3-dihydroquinazolin-4(1H)-ones. These nanoparticles exhibit high catalytic activity due to their specific morphology and exposed surfaces.
NEW JOURNAL OF CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Soniya Agarwal, Parmita Phukan, Diganta Sarma, Kalyanjyoti Deori
Summary: Copper sulfide nanoparticles were synthesized and used as a three-way heterogeneous catalyst for various reactions, showing promising results in photocatalytic degradation and reduction, as well as pharmaceutical molecule synthesis. This significant outcome opens up new possibilities for material synthesis methods and applications in the field.
NANOSCALE ADVANCES
(2021)
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)
