Article
Chemistry, Multidisciplinary
Fengqian Zhao, Han-Jun Ai, Xiao-Feng Wu
Summary: In this study, a novel copper-catalyzed method has been developed for the highly selective double carbonylation of alkyl bromides, yielding moderate to good yields of alpha-keto amides as the sole products. Under different conditions, controllable double- and mono-carbonylation can be achieved with alkyl iodides.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Biochemistry & Molecular Biology
Luca Bagnarelli, Alessandro Dolmella, Carlo Santini, Riccardo Vallesi, Roberto Giacomantonio, Serena Gabrielli, Maura Pellei
Summary: The newly synthesized dimeric copper(II) bromide complex exhibited efficient catalytic performance in allylic functionalization through a Kharasch-Sosnovsky reaction, achieving up to 90% yield of allylic benzoates. The complex features a distorted square pyramidal geometry with five-coordination, demonstrating significant improvements in reaction rate and reagent amounts compared to traditional Kharasch-Sosnovsky reactions.
Article
Chemistry, Applied
Guowei Xiong, Liangfeng Huang, Zhang Gong, Can Wang, Yunfeng Chen
Summary: A copper-catalyzed cross-dehydrogenative coupling reaction was developed for the synthesis of beta-keto sulfoxides from aromatic aldehydes and DMSO, achieving yields of 73-92%. The reaction involved base-promoted DMSO addition to aldehydes and copper-catalyzed aerobic oxidation. This catalytic system also worked well with aromatic alcohols that could be oxidized to aldehydes.
ADVANCED SYNTHESIS & CATALYSIS
(2022)
Article
Chemistry, Multidisciplinary
Lei Xu, Shaoyin Sun, Xing Zhang, Haofei Gao, Wei Wang
Summary: The solvent plays an important role in the selectivity of TMCH, and using RANEY metal catalysts instead of noble metals can reduce production costs.
Article
Chemistry, Organic
Yuxin Zheng, Yanze Huang, Peng Gao, Hongyan Liu, Suguru Murakami, Ryosuke Matsubara, Masahiko Hayashi
Summary: A novel catalytic asymmetric reaction was reported, where the regiodivergent desymmetrisation of meso-azabicycloheptene was achieved via allylic oxidation using a single chiral copper catalyst, producing two different, enantioenriched structural isomers with high optical purity from a single compound. The enantioselectivity of the two structurally isomeric compounds was enriched to >99.5% ee after derivatization.
Article
Chemistry, Applied
Pilar Yeste, M. Amine Fellak, Hilario Vidal, Francisco M. Guerra, F. Javier Moreno-Dorado, Jose M. Gatica
Summary: In this study, a copper-iron mixed oxide was deposited on cordierite honeycomb monoliths using the washcoating procedure, creating an excellent heterogeneous catalyst. The prepared catalyst exhibited high yield and stability in the selective production of allylic ester in the Kharasch-Sosnovsky oxidation of cyclohexene with benzoic acid. The use of a structured catalyst offers an interesting alternative to homogeneous catalysis in synthetic chemistry.
Article
Chemistry, Organic
Hongbo Qi, Shuai Xu, Ruiguo Zhao, Shufeng Chen
Summary: A convenient and mild method for the synthesis of ynones via NIS-mediated oxidation of propargyl alcohols has been described. The reaction provides ynones with a variety of functional groups in moderate to excellent yields, and the flexibility of this method has been demonstrated through gram-scale experiment and further transformation.
JOURNAL OF ORGANIC CHEMISTRY
(2022)
Review
Environmental Sciences
Wenyue Dou, Xianjia Peng, Linghao Kong, Xingyun Hu
Summary: This paper provides insights into various methods, including traditional precipitation, oxidation, ion exchange, and physical separation, as well as newly developed approaches, for removing Cl(-I) from industrial wastewaters. The mechanisms, applicable conditions, optimum parameters, and advantages and disadvantages of these methods are analyzed. The developmental trends and potential improvements are also discussed.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Review
Chemistry, Multidisciplinary
Xinxin Wu, Zhigang Ma, Tingting Feng, Chen Zhu
Summary: Rearrangement reactions are crucial in organic chemistry, improving synthetic efficiency and molecular complexity. Ionic rearrangement reactions and radical-mediated rearrangements are the focus of research, with new radical rearrangements revealing migratory behavior of functional groups.
CHEMICAL SOCIETY REVIEWS
(2021)
Article
Chemistry, Multidisciplinary
Martin S. Maier, Andrej Shemet, Dirk Trauner
Summary: The 2'-phosphodiesterase inhibitor A-74528 is a complex type II polyketide with intriguing biosynthesis and unusual biological activity. This study focuses on the synthesis of A-74528, specifically the construction of its carbon skeleton and the installation of its stereocenters. The strategy involves various reactions to establish carbocycles and append the pyrone moiety.
Article
Chemistry, Organic
L. Petrov, V. M. Solyanikov
Summary: Introducing Co(II) chloride into a styrene epoxide-CuCl2-alpha-naphthol ternary system inhibits the consumption of epoxide and alpha-naphthol as well as the absorption of oxygen in a methanol solution. Similarly, oxygen absorption is also inhibited by the introduction of CoCl2 into a cyclohexene epoxide-CuCl2-alpha-naphthol ternary system. However, when ionol is used instead of alpha-naphthol as an aromatic alcohol, the introduction of cobalt(II) chloride does not inhibit oxidation.
PETROLEUM CHEMISTRY
(2022)
Article
Chemistry, Physical
Caitlin Kozack, Stephen J. Tereniak, Jonathan N. Jaworski, Bao Li, David L. Bruns, Spring M. M. Knapp, Clark R. Landis, Shannon S. Stahl
Summary: This study focuses on the impact of benzoquinone on the catalytic activity in palladium(II)-catalyzed allylic acetoxylation. The results indicate that benzoquinone enhances the performance of the catalyst, showing a synergistic effect with Co(salophen) in improving reaction performance. The mechanistic studies suggest that both benzoquinone and oxygen play significant roles in oxidizing Pd(0) to Pd(II), leading to better reaction outcomes.
Article
Multidisciplinary Sciences
Xiang Pu, Qiu-Di Dang, Lei Yang, Xia Zhang, Dawen Niu
Summary: The authors report a doubly-stereoconvergent, Cu/Mg-catalyzed asymmetric propargylic substitution reaction that can selectively construct products with vicinal congested stereocenters. This reaction uses readily available starting materials, environmentally friendly catalysts, and has a broad substrate scope.
NATURE COMMUNICATIONS
(2022)
Review
Chemistry, Multidisciplinary
Saadi Samadi, Hamid Arvinnezhad, Saber Nazari, Shiva Majidian
Summary: Asymmetric allylic oxidation is a powerful method to form a new stereogenic center, with enantioselectivities and chemical yields strongly dependent on various factors.
TOPICS IN CURRENT CHEMISTRY
(2022)
Article
Biotechnology & Applied Microbiology
Ruixuan Bai, Baoling Chen, Liangyu Zheng
Summary: In this study, iolS from Bacillus subtilis 168 was identified as a potential biocatalyst for the asymmetric reduction of alpha-keto amides to yield chiral alpha-hydroxy amides. Through semi-rational engineering, stereocomplementary variants with high enantioselectivity were obtained, providing an effective strategy for obtaining alpha-hydroxy amides with high optical purity and offering insights into altering the stereoselectivity of AKRs.
MICROBIAL CELL FACTORIES
(2023)
Article
Chemistry, Multidisciplinary
Feiping Zhao, Eveliina Repo, Yang Song, Dulin Yin, Samia Ben Hammouda, Li Chen, Simo Kalliola, Juntao Tang, Kam C. Tam, Mika Sillanpaa
Review
Chemistry, Multidisciplinary
Guoqiang Zou, Hongshuai Hou, Peng Ge, Zhaodong Huang, Ganggang Zhao, Dulin Yin, Xiaobo Ji
Article
Chemistry, Physical
Chen Xing, Jiang Deng, Rong Tan, Mengqiao Gao, Pengbo Hao, Donghong Yin, Dulin Yin
CATALYSIS SCIENCE & TECHNOLOGY
(2017)
Article
Chemistry, Physical
Wenzhou Zhong, Mengqiao Liu, Jing Dai, Jian Yang, Liqiu Mao, Dulin Yin
APPLIED CATALYSIS B-ENVIRONMENTAL
(2018)
Article
Energy & Fuels
Enbo Yang, Chunlian Yao, Yachun Liu, Chao Zhang, Litao Jia, Debao Li, Zaihui Fu, Dekui Sun, Steven Robert Kirk, Dulin Yin
Article
Chemistry, Multidisciplinary
Shuolin Zhou, Dabo Jiang, Xianxiang Liu, Yiping Chen, Dulin Yin
Article
Chemistry, Physical
Guoqiang Zou, Hongshuai Hou, Ganggang Zhao, Peng Ge, Dulin Yin, Xiaobo Ji
JOURNAL OF MATERIALS CHEMISTRY A
(2018)
Article
Materials Science, Paper & Wood
Zengtian Chen, Qingfeng Li, Yuxue Xiao, Chao Zhang, Zaihui Fu, Yachun Liu, Xianfeng Yi, Anmin Zheng, Changzhi Li, Dulin Yin
Article
Chemistry, Physical
Liping Xiang, Jingjing Fan, Wenzhou Zhong, Liqiu Mao, Kuiyi You, Dulin Yin
APPLIED CATALYSIS A-GENERAL
(2019)
Article
Engineering, Environmental
Shuolin Zhou, Xianxiang Liu, Jinhua Lai, Min Zheng, WenZhu Liu, Qiong Xu, Dulin Yin
CHEMICAL ENGINEERING JOURNAL
(2019)
Article
Chemistry, Physical
Xuanyan Liu, Jun Liu, Yue Xia, Dulin Yin, Robert Kirk Steven, Liqiu Mao
CATALYSIS COMMUNICATIONS
(2019)
Article
Chemistry, Physical
Jialuo She, Xiangfeng Lin, Zaihui Fu, Jianwei Li, Senpei Tang, Ming Lei, Xin Zhang, Chao Zhang, Dulin Yin
CATALYSIS SCIENCE & TECHNOLOGY
(2019)
Article
Chemistry, Multidisciplinary
Wenzhu Liu, Jiafu Xiao, Qiong Xu, Xianxiang Liu, Sheng Zhong, Hua Huang, Min Zheng, Steven Robert Kirk, Dulin Yin
Article
Chemistry, Physical
Junyi Liu, Hua Huang, Xianxiang Liu, Jiafu Xiao, Sheng Zhong, Xichun She, Zaihui Fu, Steven Robert Kirk, Dulin Yin
CATALYSIS COMMUNICATIONS
(2017)
Article
Chemistry, Analytical
Wenjie Liu, Austen L. Davis, William F. Siems, Dulin Yin, Brian H. Clowers, Herbert H. Hill
ANALYTICAL CHEMISTRY
(2017)
Article
Chemistry, Physical
Ming-Yi Chen, Ngoc Thanh Thuy Tran, Ahmed Abubakar Alao, Wen-Dung Hsu
Summary: This study demonstrates the significance of surface Pt atom arrangement for the efficiency of ORR in PEMFCs and reveals the correlation between Pt-Pt average distance and O2 dissociation barrier. Furthermore, the study discovers a robust correlation between the level of the catalyst's d-band center and O2 adsorption energy. High-entropy alloy substrates provide potential for controlling Pt arrangement and O2 dissociation barrier.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Eduardo C. Atayde Jr, Babasaheb M. Matsagar, Yu-Cheng Wang, Kevin C. -W. Wu
Summary: This study presents the first application of an acidic MOF, Sulfated MOF-808, in catalyzing the HAA reactions of furan oligomers for the production of biofuel precursors. The catalyst showed high yield, selectivity, and recyclability, making it versatile for different starting materials.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Maria do Carmo Rangel, Francieli Martins Mayer, Soraia Jesus de Oliveira, Sergio Gustavo Marchetti, Fabricio Luiz Faita, Doris Ruiz, Giovanni Saboia, Mariana Kieling Dagostini, Jonder Morais, Maria do Carmo Martins Alves
Summary: This study developed a new catalyst by investigating the effect of magnesium on the catalytic properties of hematite in ethylbenzene dehydrogenation. The catalyst showed important differences in activity, selectivity, and stability, making it a promising candidate for commercial applications.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Yanjun Li, Qian Wang, Hui Tian, Mingyuan Zhu, Yuanyuan Liu
Summary: A novel strategy using microwave-assisted precipitation was proposed to prepare defective CsH3PMo11VO40 catalyst for the oxidation of methacrolein to methacrylic acid. Microwave treatment accelerates crystallization, increases vanadyl species content, and forms defective Keggin structures, thereby enhancing the oxidation capacity of the catalyst.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Rajeshwari Athavale, Sailee Gardi, Fatima Choudhary, Dayanand Patil, Nandkishor Chandan, Paresh More
Summary: In this study, a novel acidic ionic liquid catalyst was prepared and used for the synthesis of bis-indolyl methane derivatives. The catalyst exhibited short reaction times, easy purification, and reusability.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Masatomo Hattori, Takato Hattori, Masakuni Ozawa
Summary: Cu-added gamma-Al2O3 catalysts were prepared with varying Cu loadings and the effects of copper oxidation states on catalytic activity were investigated. The results showed that the addition of copper increased the catalyst activity, but excessive copper loading decreased catalytic activity. XRD and TEM analysis indicated the formation of a solid solution of copper oxide species on the surface of gamma-Al2O3. XAS and TPR data demonstrated variations in copper oxidation states among the catalysts.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Liwei Fang, Shiyang Niu, Shengsen Wang, Yiqing Lu, Yuanhui Cheng
Summary: In this study, PtNi alloy on nitrogen-doped carbon and SnO2 dual-support was designed to modulate the metal-support interaction, resulting in improved catalytic activity and stability for oxygen reduction reaction. The SnO2/PtNi/NC catalyst exhibited a strongly coupled interface, enhanced electron transfer, and higher half-wave potential compared to PtNi/NC and commercial Pt/C.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Shohei Harada, Duanxing Li, Kenta Iyoki, Masaru Ogura
Summary: This study investigates the catalytic performance of a composite catalyst composed of ZnZrOX and H-zeolite for the hydrogenation of CO2. The deactivation of the composite catalyst is influenced by ion exchange of Zn2+ and/or coke, with their effects differing based on the zeolite structure. Separating the grains of the composite catalyst can prevent deactivation.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Laura Proano, Christopher W. Jones
Summary: In this study, NiGa alloy particles supported on CeO2, ZrO2, and ZrO2-CeO2 solid solutions were prepared and characterized. The nature of the support was found to have a significant influence on the catalyst's activity and selectivity, with the crystalline structure of ZrO2 having the greatest impact. Pure ZrO2 showed the highest methanol selectivity and CO2 conversion at high Zr:Ce ratios. In equimolar and Ce-rich conditions, basic sites and oxygen vacancies were found to be the key parameters affecting methanol production.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Liyan Zhang, Yinze Yang, Leilei Zhou, Fengyu Zhao, Haiyang Cheng
Summary: 1,6-Hexamethylenediamine was successfully synthesized via the reductive amination of 1,6-hexanediol using a Ru/PRL(x)-Al2O3 catalyst. The highly dispersed and anchored Ru species, formed by 1,10-phenanthroline (PRL), played a crucial role in the catalytic reaction. The formation of new acid-base pairs, electron deficient Ru species, and smaller nanoparticles contributed to the improved catalytic performances of the Ru/PRL-Al2O3 catalyst.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Anita Horvath, Miklos Nemeth, Andrea Beck, Gyorgy Safran, Valeria La Parola, Leonarda Francesca Liotta, Gregor Zerjav, Matevz Roskaric, Albin Pintar
Summary: This study investigates the catalytic and structural changes caused by the addition of 0.25 wt% indium in a 3% Ni/CeO2-Al2O3 catalyst prepared by impregnation method. The results show that the addition of indium can decrease the activity of the catalyst, but it improves its stability and reduces coking.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Ankush Kularkar, Vaibhav Vilas Khedekar, Sachin D. Chaudhari, Mudavath Ravi, Sadhana S. Rayalu, Penumaka Nagababu
Summary: Efficiently addressing the challenges of photocatalytic CO2 reduction to CH3OH is crucial. This study developed Zn-BTC MOF and its composites with CaIn2S4, achieving highly efficient and robust photocatalytic CO2 reduction to CH3OH under ambient conditions, using H2O2 as the hydrogen source. Among the composites, ZMCIS4 demonstrated excellent performance with a CH3OH evolution of 49100 μmol/g.cat and a quantum efficiency of approximately 78.41%. The enhanced performance was attributed to the production of nascent hydrogen atoms (H center dot) through the photo-splitting of H2O2 on the ZMCIS surface.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Dan Liu, Yudong Li, Chengyu Wang, Haiyue Yang, Rong Wang, Shujun Li, Xiaohui Yang
Summary: In this study, a self-supporting three-dimensional porous Co3O4 nanobelt array decorated on nickel foam (P-Co3O4 -NBA@NF) electrode with numerous active sites was successfully constructed for the oxidation of 5-Hydroxymethylfurfural (HMF) to 2,5-furan dicarboxylic acid (FDCA). The P-Co3O4 -NBA@NF electrode demonstrated high conversion efficiency, selectivity, and Faraday efficiency, as well as remarkable long-term stability. This research provides a promising electrocatalyst for biomass conversion.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Yimin Li, Enggah Kurniawan, Fumiya Sato, Takayoshi Hara, Yasuhiro Yamada, Satoshi Sato
Summary: In this study, several silica-alumina catalysts modified with Ag were examined for the dehydration of 1,3-butanediol to 1,3-butadiene. Among them, an amorphous silica-alumina catalyst (SAL-3) modified with Ag showed the highest improvement in catalytic activity and stability when operated in H2 flow. The generation of reversible acid sites was found to be the reason behind the enhanced activity and stability of this Ag/SAL-3 catalyst. The effects of various parameters on the catalytic activity of Ag/SAL-3, such as reaction temperature, contact time, Ag content, and carrier gas, were investigated.
APPLIED CATALYSIS A-GENERAL
(2024)