Article
Chemistry, Multidisciplinary
Kieran Benn, Kieran Nicholson, Thomas Langer, Stephen P. Thomas
Summary: Cyanation serves as a simple method for introducing nitrile group into organic molecules and installing various functional groups through transition metal catalysis and hydrogen cyanide gas. Electrophilic cyanation of enones can be achieved using main-group catalyst and non-toxic cyanide source, with a broad substrate scope including reducible functional groups. Mechanistic studies suggest an amino-borane intermediate undergoing B-N transborylation for catalytic turnover.
CHEMICAL COMMUNICATIONS
(2021)
Article
Chemistry, Organic
Xuan Li, Mengnan Chen, Chuan Xie, Jing Zhang
Summary: A visible light-activated ruthenium-catalysed direct arylation of aryl C-H bonds with aryl (pseudo)halides is presented, operating at ambient temperature with broad substrate scopes and excellent compatibility of functionalities, which is achieved by efficient generation of active catalytic species via photo-induced ligand dissociation.
TETRAHEDRON LETTERS
(2022)
Article
Chemistry, Multidisciplinary
Yaquan Tao, Qiyuan Zhou, Chengjie Cai, Chunyuan Song, Hai Li, Xiao Huang, Lijun Yang, Wei Huang, Shaozhou Li
Summary: Research has shown that promoting the formation of wavy silicon oxide layer on the surface of silicon through copper catalyst, inducing local strain to form highly defective oxide layer, facilitating electrolyte transport to silicon, resulting in spontaneous and continuous electrochemical oxidation of silicon.
ENERGY & ENVIRONMENTAL SCIENCE
(2021)
Article
Chemistry, Organic
Yujuan Xie, Liliang Huang, Huihui Feng, Yayu Qi, Erik V. Van der Eycken, Huangdi Feng
Summary: An efficient strategy for the synthesis of multisubstituted pyridines via oxidative alkynylation, radical addition, and intramolecular cycloaddition is presented. This method offers high selectivity, good economic efficiency, and broad applicability.
Review
Biochemistry & Molecular Biology
Rui Zhao, Han Wang, Dan Zhao, Rui Liu, Shejiang Liu, Jianfeng Fu, Yuxin Zhang, Hui Ding
Summary: This review systematically summarizes recent progress on the catalytic oxidation of VOCs at ambient temperature. The structure-activity relationship in the catalytic oxidation process can be influenced by adjusting the structure of nanoparticle catalysts, cluster catalysts, and single-atom catalysts. The catalytic activity is also affected by process conditions. Currently, ambient temperature catalytic oxidation is mainly used for the removal of easily degradable pollutants, and there is a need to improve the activity, selectivity, and stability of catalysts. New prospects and challenges are proposed based on the existing problems and limitations in the application of ambient temperature catalytic oxidation technology.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Chemistry, Physical
Chunying Wang, Yaobin Li, Lirong Zheng, Changbin Zhang, Yin Wang, Wenpo Shan, Fudong Liu, Hong He
Summary: Metal oxides are commonly used as supports in noble metal-based catalysts for formaldehyde oxidation, but this study demonstrates the successful application of activated carbon, a nonoxide support, for Pt catalysts in HCHO oxidation. The addition of alkali metal Na enhances the stability of Pt species, increases Pt dispersion, and improves the activation of chemisorbed oxygen and water, leading to direct conversion of HCHO to CO2 and H2O on the Na-Pt/AC-R catalyst. This research extends the promotional effect of alkali metals on supported Pt catalysts to a nonoxide carrier system.
Article
Materials Science, Multidisciplinary
Jingyu Qian, Jing Mo, Yukang Zhou, Mengjie Fan, Yingwen Chen, Jining Liu, Yuan Xu, Shubao Shen
Summary: In this study, manganese-cerium composite oxides (MC) were developed as an effective catalyst for indoor formaldehyde elimination at room temperature, achieving efficient removal of low concentrations of formaldehyde. Free radicals were confirmed to play a key role in formaldehyde degradation on MC, and the mechanism of MC catalytic oxidation at room temperature was deduced.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Chemistry, Multidisciplinary
Daniel Himmelbauer, Radu Talmazan, Stefan Weber, Jan Pecak, Antonio Thun-Hohenstein, Maxine-Sophie Geissler, Lukas Pachmann, Marc Pignitter, Maren Podewitz, Karl Kirchner
Summary: The synthesis of imines is a foundational aspect of organic chemistry. Alcohols can be used as renewable substitutes for carbonyl-functionality, allowing for the in situ generation of carbonyl moieties from alcohols using transition-metal catalysis under inert atmosphere or bases under aerobic conditions. In this study, we report the synthesis of imines from benzyl alcohols and anilines using (KOBu)-Bu-t as a catalyst under aerobic conditions at room temperature, without the need for a transition-metal catalyst. We also present a detailed investigation of the underlying radical mechanism, revealing a complex reaction network that supports the experimental findings.
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
Article
Chemistry, Physical
Xiucheng Sun, Yuehan Wang, Geqian Fang, Jian Zhang, Chaojie Wang, Yang Chen, Yiming Gu, Lin Li, Ying Li, Jian Lin
Summary: This study developed a Pt catalyst supported by a metal-organic framework (CAU-1) material, achieving complete elimination of HCHO through a one-step storage-oxidation process at room temperature, with high adsorption capacity and catalytic efficiency.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Analytical
B. Renganathan, Subha Krishna Rao, Manjunath S. Kamath, K. Ajitha, A. R. Ganesan, A. Deepak
Summary: In this study, a non-enzymatic clad modified PMMA optic fiber glucose sensor was developed using Ce doped ZnO coated fiber. The sensor showed good sensitivity and selectivity in fresh glucose solution, making it suitable for commercialization.
MICROCHEMICAL JOURNAL
(2022)
Article
Chemistry, Multidisciplinary
Subir Panja, Salman Ahsan, Tanay Pal, Simon Kolb, Wajid Ali, Sulekha Sharma, Chandan Das, Jagrit Grover, Arnab Dutta, Daniel B. Werz, Amit Paul, Debabrata Maiti
Summary: This study reports a new non-directed and regioselective olefination method for simple arenes via an electrooxidative catalytic cycle, demonstrating a wide substrate scope.
Review
Chemistry, Applied
Mary Baby Aleena, Rose Mary Philip, Gopinathan Anilkumar
Summary: Stille coupling is considered a powerful tool for synthesizing a wide range of functionalized C-C bonds, with non-palladium transition metals playing a significant role. Copper, among other transition metals, has been found to be highly efficient in these couplings. Copper-catalyzed Stille couplings are crucial in the synthesis of therapeutic molecules, and greener heterogeneous catalytic systems are promising alternatives to palladium catalysts.
APPLIED ORGANOMETALLIC CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Xingchao Dai, Xinzhi Wang, Carsten Kreyenschulte, Hangkong Yuan, Angelika Brueckner, Feng Shi, Jabor Rabeah
Summary: Value-added formamides were synthesized sustainably by catalyzing in situ C-C bond cleavage with zeolite 5A supported Cu-based catalysts using glycerol derivatives as the carbonyl source. The introduction of Zr-IV ions greatly increased the activity of the Cu/5A catalyst. Isotopic tracing experiments confirmed the involvement of glycerol derivatives in the formation of formamide products.
Article
Chemistry, Physical
Shijun Meng, Wenping Li, Zhaofei Li, Hua Song
Summary: This study reports a non-thermal plasma assisted non-oxidative methane liquefaction process that successfully transforms methane into gasoline-range chemicals. The use of mesoporous silica catalyst SBA-15 enhances methane conversion, liquid selectivity, and the quality of the collected liquid product. This study demonstrates a promising method for natural gas utilization at mild conditions.
CATALYSIS SCIENCE & TECHNOLOGY
(2023)
Article
Environmental Sciences
Guofang An, Jie Zhu, Qiong Huang, Mingyang Gu, Yueyin Sun, Lirui Xu, Tao Tao, Bo Yang, Mindong Chen, Hong Yang
Summary: This study investigates the synergistic effect of photo-thermal oxidation with Bi3+-TiO2/MnFeOx for a low concentration of formaldehyde. The results show that Bi3+-TiO2/MnFeOx exhibits improved oxidation activity for formaldehyde under photo-thermal oxidation at ambient temperature.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Chemistry, Organic
Faiza Diaba, Gisela Trenchs
Summary: The first violet light-mediated synthesis of gamma- and delta-lactams from N-alkenyl trichloroacetamides is reported in this paper. The reactions are conducted in tetrahydrofuran or 2-methyltetrahydrofuran as the sole solvent without catalysts or additives, under non-anhydrous conditions in an air atmosphere where the solvent serves as the radical initiator.
ORGANIC & BIOMOLECULAR CHEMISTRY
(2024)
Article
Chemistry, Organic
Feroze Hussain, Sajjad Ahmed, Ashiq Hussain Padder, Qazi Naveed Ahmed
Summary: This study reports a novel and efficient one-pot synthesis method for mixed phosphorotrithioates, which does not require supplementary additives and shows broad applicability.
ORGANIC & BIOMOLECULAR CHEMISTRY
(2024)
Article
Chemistry, Organic
Hyunjin Oh, Ikyon Kim
Summary: A new 1,2,4-triazole-pyrrolo[1,2-a]pyrazine hybrid system, 6-acylpyrrolo[1,2-a][1,2,4]triazolo[5,1-c]pyrazine, was synthesized using a catalyst-free method. This method involved sequential exposure of pyrrole-2-carbonitrile-derived substrates to DMF-DMA and acyl hydrazide, resulting in the formation of acylated pyrazine and 1,2,4-triazole rings, enabling the installation of various substituents at specific positions on the core skeleton.
ORGANIC & BIOMOLECULAR CHEMISTRY
(2024)
Article
Chemistry, Organic
Ming Yan, Si-fan Wang, Yong-po Zhang, Jin-zhong Zhao, Zhuo Tang, Guang-xun Li
Summary: Here we developed an efficient photocatalytic approach for the convenient preparation of sulfinamides. The reaction allows for the gram-scale preparation of sulfinamides and the one-pot synthesis of various sulfonyl amides.
ORGANIC & BIOMOLECULAR CHEMISTRY
(2024)
Article
Chemistry, Organic
Farzaneh Bandehali-Naeini, Zahra Tanbakouchian, Noushin Farajinia-Lehi, Nicolas Mayer, Morteza Shiri, Martin Breugst
Summary: Two tandem catalytic systems were developed for the synthesis of novel 3,4-disubstituted maleimides using the same Ugi adducts. Different maleimide structures can be synthesized using either Pd or Cu catalysis.
ORGANIC & BIOMOLECULAR CHEMISTRY
(2024)
Article
Chemistry, Organic
Tanya Raghava, Anjan Chattopadhyay, Subhadeep Banerjee, Nivedita Sarkar
Summary: Amine substitution of two ortho fluorine atoms of tetrafluoroterephthalonitrile through SNAr chemistry is easily achievable. But further fluorine substitution is only possible under forcing conditions, yielding valuable fluorophores for bioimaging.
ORGANIC & BIOMOLECULAR CHEMISTRY
(2024)
Review
Chemistry, Organic
Anju Chadha, Santosh Kumar Padhi, Selvaraj Stella, Sowmyalakshmi Venkataraman, Thangavelu Saravanan
Summary: Alcohol dehydrogenases are enzymes that use cofactors for oxidation or reduction reactions of alcohols or carbonyl compounds. They are utilized in green chemistry and have applications in the production of pharmaceuticals. Recombinant enzymes have solved the challenge of producing purified enzymes in large quantities. Engineered alcohol dehydrogenases have been used in asymmetric synthesis in industry. Various methods have been established for regenerating expensive cofactors to make the enzymatic process more efficient and economically viable.
ORGANIC & BIOMOLECULAR CHEMISTRY
(2024)