Article
Chemistry, Multidisciplinary
Wenyan Li, Xinying Lin, Jing Long, Bo Zheng, Zhaorui Pan, Leiming Lang, Guangxiang Liu
Summary: The mesoporous core-shell structure Ag@SiO2 nanospheres are constructed to prevent aggregation of Ag nanoparticles during hydrogenation, leading to superior catalytic performance in terms of 100% conversion and selectivity in the hydrogenation of nitro compounds, with good recycling performance for multiple uses.
Article
Energy & Fuels
Chong Lu, Lei Gao, Linye Zhang, Kun Liu, Yingchun Hou, Tianqiu He, Yanling Zhou, Guangtao Wei
Summary: In this study, the catalytic transfer hydrogenation of polyunsaturated fatty acid methyl esters was carried out using microwave-assisted technology. The optimal reaction conditions were determined and the results showed that microwave heating enhanced the conversion ratio and reduced hydrogenation time. The reaction followed a pseudo-first-order dynamic model.
CHEMICAL ENGINEERING AND PROCESSING-PROCESS INTENSIFICATION
(2022)
Article
Chemistry, Physical
Bowen Wang, Connor R. R. Bourgonje, Juan C. C. Scaiano
Summary: Combining fluorescence and electron microscopy, in-flow single molecule fluorescence, and bench chemistry, we gained an in-depth understanding of the properties and performance of Pd@GW catalyst in the nitro-to-amine catalytic reduction. Advanced microscopy techniques allowed us to fully characterize the catalyst in situ and observe the minimal migration of Pd clusters under flow conditions. The deep understanding of the catalyst's real activity will contribute to the improvement of existing catalysts and the exploration of new catalysis systems.
CATALYSIS SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Organic
Mingyeong Jang, Taeho Lim, Byoung Yong Park, Min Su Han
Summary: This study presents a metal-free and highly chemoselective method for the reduction of aromatic nitro compounds, using tetrahydroxydiboron as the reductant. The reaction can be completed within 5 minutes at room temperature and selectively converts nitroarenes with sensitive functional groups into anilines.
JOURNAL OF ORGANIC CHEMISTRY
(2022)
Article
Chemistry, Inorganic & Nuclear
Zeyu Shen, Lirui Hong, Baishu Zheng, Guanyu Wang, Beibei Zhang, Zhaoxu Wang, Feiyang Zhan, Shaohua Shen, Ruirui Yun
Summary: The Co/Ni bimetallic nanoparticle supported by nitrogen-doped porous carbon (NPC) showed high catalytic performance in hydrogenating nitro compounds into amines using hydrazine hydrate at mild conditions, thanks to the synergistic effects of the bimetal nanoparticles and the porous structure of NPC with more accessible active sites.
INORGANIC CHEMISTRY
(2021)
Article
Chemistry, Organic
Hualing He, Xiaoxue Tang, Yang Cao, Jon C. Antilla
Summary: A catalytic enantioselective reduction of alpha-trifluoromethylated imines has been developed using a BINOL-derived boro-phosphate as catalyst and catecholborane as hydride source. This method provides an efficient route to prepare synthetically useful chiral alpha-trifluoromethylated amines in high yields and excellent enantioselectivities under mild conditions (up to 98% yield and 96% ee).
JOURNAL OF ORGANIC CHEMISTRY
(2021)
Article
Chemistry, Physical
Zi-Jie Gong, Yemineni S. L. Narayana, Yen-Chun Lin, Wei-Hsiang Huang, Wei-Nien Su, Yi-Pei Li, Masayoshi Higuchi, Wen-Yueh Yu
Summary: In this study, ruthenium-based metallo-supramolecular polymers (Ru-MSPs) were synthesized and used for heterogeneously catalytic transfer hydrogenation of carbonyl compounds. The polymerization process was controlled by adjusting the ligand/metal ratio and synthesis conditions. The coordinatively unsaturated ruthenium atoms were identified as the active sites for carbonyl reduction, and the Ru-MSPs exhibited enhanced activity and reusability compared to monomeric counterparts.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Chemistry, Physical
Feng Li, Ru Meng, Wenjuan Wang, Wei Wang, Baokang Jin
Summary: The electrochemical degradation of p-nitrochlorobenzene in aprotic media containing CO2 was studied, revealing it as an irreversible four-electron transfer process. Moreover, the mechanism and product characteristics of the electroreduction of aromatic nitro compounds in the presence of CO2 were investigated, highlighting the conversion of CO2 to CO32- as a new way of carbon sequestration.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Chemistry, Multidisciplinary
Yuxuan Liu, Wang Miao, Weijun Tang, Dong Xue, Jianliang Xiao, Chao Wang, Changzhi Li
Summary: A rhodium terpyridine complex catalyzed transfer hydrogenation of nitroarenes to anilines with i-PrOH as hydrogen source and water as solvent has been developed. The catalytic system shows high activity and can be easily recycled for multiple times.
CHEMISTRY-AN ASIAN JOURNAL
(2021)
Review
Environmental Sciences
Bei Wang, Yunbo Zhai, Shanhong Li, Caiting Li, Yun Zhu, Min Xu
Summary: This paper primarily discusses the removal methods and mechanisms of perchlorate, focusing on converting it into harmless chloride ions using appropriate catalysts. Additionally, it explores the two main reduction pathways and the synergy between them, as well as the factors influencing the catalytic process.
Article
Engineering, Chemical
Lisong Sun, Xing Wang, Zhengzhe Wang, Shenao Zhou, Yang Wei, Yajiang Huang, Guangxian Li
Summary: In this study, cryogenically pulverized polypropylene (PP) powders were dispersed in poly(ethylene glycol) (PEG) liquids and then subjected to microwave heating to achieve rapid spheroidization without stirring. The effects of microwave time, PEG molecular weight, and powder/segregation agent content on the spheroidization effect were investigated, and the spheroidized PP powder exhibited excellent powder flowability and improved crystallization behavior. The results suggested that microwave spheroidization in a liquid phase may be a promising technique for the large-scale preparation of spherical powders for powder bed fusion (PBF) processing.
Article
Chemistry, Multidisciplinary
Zhenyu Chen, Aysecik Kacmaz, Jianliang Xiao
Summary: This article provides a brief review on the progress made in the synthesis and application of cyclometallated half-sandwich Cp*Ir(III) complexes since 2017, covering various types of ligands and their applications in catalysis.
Article
Chemistry, Multidisciplinary
Lixing Zhao, Chenyang Hu, Xuefeng Cong, Gongda Deng, Liu Leo Liu, Meiming Luo, Xiaoming Zeng
Summary: This study reports a chromium-catalyzed nitro deoxygenative hydroboration promoted by a CAAC ligand, providing a cost-effective strategy for the synthesis of various amines and highlighting its potential applications in medicinal chemistry.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2021)
Article
Chemistry, Inorganic & Nuclear
Dmitri Gelman, Ilya Kisets, Sofiya Zabelinskaya
Summary: The synthesis and catalytic studies of a prototypical coordinatively rigid carbometalated half-sandwich Ru(II) complex with a rigid polyaromatic tether were described. Despite its coordinatively and electronically saturated nature, the complex demonstrated the ability to activate and transfer hydrogen to polar and nonpolar double bonds. The catalytic activity was benchmarked in the Ru-catalyzed chemoselective hydrogenation of alpha,beta-unsaturated ketones, with initial mechanistic studies suggesting an inner-sphere mechanism via dihydride intermediates.
Article
Chemistry, Multidisciplinary
Bin Wang, Hongyuan Ren, Hou-Ji Cao, Changsheng Lu, Hong Yan
Summary: Efficient transformation of nitroaromatics into N-heterocycles has been achieved using a photoexcited nitro-induced strategy. The metal- and photocatalyst-free reaction proceeds through intramolecular redox C-N coupling and has been demonstrated to have broad substrate scope, high yields, and wide applications.
Article
Chemistry, Organic
Geeta Devi Yadav, Pooja Chaudhary, Balaram Pani, Surendra Singh
Summary: Chiral transition metal complexes with privileged ligands are efficient catalysts for various asymmetric organic transformations. Transition metal complexes of C1-symmetric pyrrolidine-based ligands have been widely used in asymmetric organic reactions. However, a comprehensive review article on the transition metal complexes of chiral C1-symmetric pyrrolidine-based ligands derived from (L)-proline has not been published.
TETRAHEDRON LETTERS
(2024)
