Article
Chemistry, Multidisciplinary
Chuang Han, Guanqun Han, Shukai Yao, Lan Yuan, Xingwu Liu, Zhi Cao, Arun Mannodi-Kanakkithodi, Yujie Sun
Summary: This study introduces a noble metal-free and ultrathin ZnIn2S4 photocatalyst for deuteration reactions using heavy water as the sole deuterium source. By synthesizing defective two-dimensional ZIS nanosheets with surfactant assistance, the performance is significantly enhanced.
Article
Chemistry, Multidisciplinary
Yuanteng Zhang, Yong Wu, Yaqiong Su, Yue Cao, Zhenjin Liang, Dali Yang, Ruohan Yu, Dongchao Zhang, Jinsong Wu, Wei Xiao, Aiwen Lei, Dong Gu
Summary: The study successfully synthesized an efficient CuN4/OMNC catalyst through a copper catalyzed strategy for selective oxidative crosscoupling of terminal alkynes, achieving high yields under mild conditions. The catalyst showed high selectivity in DFT calculations and can be easily separated and reused.
Article
Biochemistry & Molecular Biology
Juby K. Ajish, Hephziba Maria Abraham, Mahesh Subramanian, K. S. Ajish Kumar
Summary: The study explores the use of glycopolymer-functionalized resins for bacterial/protein capture and quantification. The resins demonstrate selective capture abilities for specific lectins and E. coli, showing consistent capture efficiency over multiple cycles.
MACROMOLECULAR BIOSCIENCE
(2021)
Article
Chemistry, Physical
Zhongzheng Zhang, Jialin Shi, Tianyang Zhu, Lina Zhang, Wei Wei
Summary: This study presents the fabrication of Ag/IRFC catalysts with high turnover frequency (TOF) for efficient CO2 conversion. The unique nitrogen-doped mesoporous single-crystal carbon (IRFC) served as a host for loading Ag nanoparticles, resulting in the formation of highly-distributed ultrasmall Ag nanoparticles. The catalysts exhibited excellent catalytic activity, stability, and generality, making them promising for mild CO2 conversion even under diluted conditions.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Chemistry, Organic
Ding-Chuan Wu, Jing-Wen Bai, Lei Guo, Guang-Qi Hu, Kai-Hui Liu, Fei-Fei Sheng, Hong-Hai Zhang, Zheng-Yi Sun, Kang Shen, Xiang Liu
Summary: An efficient H/D exchange method using CF3COOAg catalyst at room temperature has been developed for selective deuteration of terminal alkynes. The reaction shows excellent site-selectivity and tolerance to functional groups, enabling deuteration of pharmaceuticals and nature product derivatives effectively.
TETRAHEDRON LETTERS
(2021)
Article
Chemistry, Organic
Chuyuan Lin, Zhenyuan Lin, Zhenying Ye, Lu Chen, Yibiao Li, Chengshuo Shen, Min Zhang
Summary: In this study, a simple approach for the synthesis of aryl alpha,alpha-difluoroketones from both terminal and internal arylalkynes using Selectfluor as the fluorine source is reported. The method enriches the capability of synthesizing alpha-fluorinated arylketones and provides a fundamental basis for the further development of fluorinated products.
TETRAHEDRON LETTERS
(2022)
Article
Energy & Fuels
Ameen A. Al-Muntaser, Mikhail A. Varfolomeev, Muneer A. Suwaid, Dmitriy A. Feoktistov, Chengdong Yuan, Alexander E. Klimovitskii, Bulat I. Gareev, Richard Djimasbe, Danis K. Nurgaliev, Sergey I. Kudryashov, Ekaterina V. Egorova, Artem V. Fomkin, Oleg V. Petrashov, Igor S. Afanasiev, Gennady D. Fedorchenko
Summary: The study investigates the role of water in catalytic and non-catalytic aquathermolysis using isotope tracing techniques. The results demonstrate the chemical role of water as a green hydrogen donor solvent, and show that introducing a catalyst can significantly improve the upgrading performance. The findings not only enhance the theoretical understanding in this field, but also support the use of catalysts in aquathermolysis for enhanced in-situ heavy oil upgrading.
Article
Chemistry, Organic
Yanjie Wang, Yuhan Zhao, Changqun Cai, Lingyun Wang, Hang Gong
Summary: A dioxygen-triggered oxosulfonylation/sulfonylation of unactivated olefins has been developed to achieve beta-keto sulfones/sulfones. Pluralistic mechanisms and different products were observed when different types of compounds were used as substrates, and the reaction was carried out with high atomic efficiency in the absence of a metal and a catalyst. Importantly, a bioactive molecule was successfully synthesized on a gram-scale level using this method.
Article
Chemistry, Organic
Ziyin Zhang, Zhi-Jiang Jiang, Yiwei Cao, Jia Chen, Zhanghua Gao
Summary: This study reports a ligand-free, palladium-catalyzed ortho-deuteration of aromatic carboxylic acids using D2O as the deuterium source. Compared to their meta-substituted analogues, a remarkably lower reactivity in para- and ortho-substituted benzoic acids towards hydrogen isotope exchange was observed. Further investigation showed that the reaction temperature is a critical parameter for the reactivity, and the modified conditions can achieve deuterated products with good to excellent deuterium incorporation.
SYNTHESIS-STUTTGART
(2022)
Article
Engineering, Chemical
Petr Polezhaev, Tomas Bellon, Lucie Vobecka, Zdenek Slouka
Summary: Electromembrane separations offer a competitive alternative to standard separation processes but are hindered by fouling. Short alkyl sulfates can be exchanged by anion resin while long ones block the resin, hindering ion exchange. The distance between sulfur and outermost carbon atoms determines the potential foulants of anion-exchange systems.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Chemistry, Physical
Giulia Giubertoni, Mischa Bonn, Sander Woutersen
Summary: D2O is commonly used as a solvent in spectroscopic studies of proteins, but its differences from H2O, particularly in hydrogen-bond strength and structure stability, are often overlooked. Recent experiments have shown that D2O can have significant effects on the structure and properties of biomolecular assemblies. A better understanding of the H2O/D2O-isotope effect may turn the differences between H2O and D2O as biomolecular solvents from an obstacle to an opportunity in protein research.
JOURNAL OF PHYSICAL CHEMISTRY B
(2023)
Article
Chemistry, Multidisciplinary
Qi Zhao, Jianjun Jiang, Lingjing Zhang, Shaozhe Wang, Jiaxing Chen, Xuming Yao, Yujun Li
Summary: This study presents a simple and efficient method for closed-loop recycling of a commercial bismaleimide (BMI)-based composite. The BMI resin polymer was successfully degraded and removed from the composite, allowing for the recycling of carbon fibers (CFs). This novel recycling paradigm helps minimize environmental contamination and reduce the consumption of valuable CF resources.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2023)
Article
Environmental Sciences
Shejiang Liu, Chen Miao, Shanshan Yao, Hui Ding, Kai Zhang
Summary: The study evaluated the reaction mechanism and remediation effect of water-soluble thiourea formaldehyde resin with heavy metals, demonstrating its excellent performance in remediating Cd-contaminated soil. After using WTF resin to remediate the soil, the proportion of Cd in the residual state significantly increased, indicating that the resin is harmless to soil health.
ENVIRONMENTAL POLLUTION
(2021)
Article
Chemistry, Analytical
Istvan Papp, Nora Vajda, Steffen Happel
Summary: A new rapid method has been developed for the determination of Th, Pu, Np, U, Am and Cm isotopes in water samples, with actinides pre-concentrated by co-precipitation with Ca phosphate and separated on stacked TEVA and TK221 cartridges. The method has been validated through participation in an IAEA proficiency test, showing chemical recoveries better than 50% for all actinides.
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
(2022)
Article
Engineering, Chemical
Jian-Jian Wu, Meng-Qi Kang, Feng-Long Hu, Yu-Hao Yan, Chen-Zhe Liu, Jun Chen, Zhi-Kai Liang, Yao-Song Zeng, Jian-Hong Jiang, Bin Deng
Summary: In this study, freezing/thawing method and hydrate-based method were compared for the removal of chromium hydroxide sulfate near the melting point of ice. The freezing/thawing method showed higher efficiency and was recommended for chromium hydroxide sulfate removal when the concentration was below 800 ppm.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Chemistry, Multidisciplinary
Yasunari Monguchi, Tomohiro Ichikawa, Tsuyoshi Yamada, Yoshinari Sawama, Hironao Sajiki
Article
Chemistry, Applied
Yoshinari Sawama, Akihiro Nakano, Takumi Matsuda, Takahiro Kawajiri, Tsuyoshi Yamada, Hironao Sajiki
ORGANIC PROCESS RESEARCH & DEVELOPMENT
(2019)
Article
Chemistry, Organic
Tsuyoshi Yamada, Kwihwan Park, Takumu Tachikawa, Akiko Fujii, Matthias Rudolph, A. Stephen K. Hashmi, Hironao Sajiki
Article
Chemistry, Multidisciplinary
Tsuyoshi Yamada, Kwihwan Park, Naoya Ito, Hayato Masuda, Wataru Teranishi, Sunliang Cui, Hironao Sajiki
BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN
(2020)
Article
Chemistry, Physical
Tsuyoshi Yamada, Wataru Teranishi, Kwihwan Park, Jing Jiang, Takumu Tachikawa, Shinichi Furusato, Hironao Sajiki
Article
Chemistry, Physical
Tsuyoshi Yamada, Jing Jiang, Naoya Ito, Kwihwan Park, Hayato Masuda, Chikara Furugen, Moeka Ishida, Seiya Otori, Hironao Sajiki
Article
Chemistry, Multidisciplinary
Tsuyoshi Yamada, Kwihwan Park, Chikara Furugen, Jing Jiang, Eisho Shimizu, Naoya Ito, Hironao Sajiki
Summary: The research has developed flow reaction methods to selectively synthesize tertiary, secondary, and primary amines from nitriles using heterogeneous platinum-group metal catalysts under catalytic hydrogenation conditions. By controlling the metal catalyst and flow parameters, a wide variety of aliphatic and aromatic nitriles can be highly selectively transformed into the corresponding amines. The continuous-flow methodologies can be applied for at least 72 hours to produce three different types of amines in high yields without decreasing catalytic activities.
Article
Chemistry, Organic
Naoki Oka, Tsuyoshi Yamada, Hironao Sajiki, Shuji Akai, Takashi Ikawa
Summary: A wide range of aryl boronic esters were synthesized and easily purified, showing higher yields in Suzuki-Miyaura couplings compared to aryl boronic acids or pinacol esters.
Article
Chemistry, Organic
Kwihwan Park, Shinichi Furusato, Chikara Furugen, Takashi Ikawa, Tsuyoshi Yamada, Hironao Sajiki
Summary: In this study, a solvent-free ruthenium-on-carbon-catalyzed hydrogenation reaction of CBDK was developed for the production of cis-CBDO, and the reaction mechanism for cis-selectivity was proposed based on density functional theory (DFT) calculations.
ASIAN JOURNAL OF ORGANIC CHEMISTRY
(2022)
Article
Chemistry, Physical
Tsuyoshi Yamada, Haruka Yamamoto, Kanon Kawai, Kwihwan Park, Norihiko Aono, Hironao Sajiki
Summary: Silicon carbide-supported palladium catalyst has been developed for selective hydrogenation reactions, showing excellent selectivity and tolerance to various functional groups. The combination of DETA with the catalyst demonstrated higher chemoselectivity in continuous-flow conditions.
Article
Chemistry, Multidisciplinary
Tsuyoshi Yamada, Wataru Teranishi, Naoya Sakurada, Seiya Ootori, Yuka Abe, Tomohiro Matsuo, Yasuharu Morii, Masatoshi Yoshimura, Takeo Yoshimura, Takashi Ikawa, Hironao Sajiki
Summary: The authors developed a microwave-assisted platinum on beaded activated carbon-catalyzed C-C bond formation of aromatic compounds under continuous-flow conditions.
COMMUNICATIONS CHEMISTRY
(2023)
Article
Chemistry, Organic
Kwihwan Park, Naoki Oka, Yoshinari Sawama, Takashi Ikawa, Tsuyoshi Yamada, Hironao Sajiki
Summary: We developed a platinum-catalyzed deuteration reaction using deuterium oxide as a deuterium source, which selectively deuterated tert-allylic alcohols with good deuterium content. The obtained deuterium-labeled allylic alcohols were further transformed into various deuterium-labeled building blocks without degradation of the original deuterium content.
ORGANIC CHEMISTRY FRONTIERS
(2022)
Article
Chemistry, Organic
Rakhee Saikia, Kwihwan Park, Hayato Masuda, Miki Itoh, Tsuyoshi Yamada, Hironao Sajiki, Sanjeev P. Mahanta, Ashim J. Thakur, Utpal Bora
Summary: The cost-effective cyanation of aryl iodides/bromides was achieved using CAN-DMF as a source of nitrogen, with Cu(II) salt as the catalyst. The mechanism involves an evolution of CN- leading to the synthesis of various aryl nitriles in moderate to good yields.
ORGANIC & BIOMOLECULAR CHEMISTRY
(2021)
Article
Chemistry, Physical
Tsuyoshi Yamada, Aya Ogawa, Hayato Masuda, Wataru Teranishi, Akiko Fujii, Kwihwan Park, Yosuke Ashikari, Noriyuki Tomiyasu, Tomohiro Ichikawa, Riichi Miyamoto, Hongzhi Bai, Kiyoshi Matsuyama, Aiichiro Nagaki, Hironao Sajiki
CATALYSIS SCIENCE & TECHNOLOGY
(2020)
Article
Chemistry, Organic
Ryoya Takakura, Kaho Koyama, Marina Kuwata, Tsuyoshi Yamada, Hironao Sajiki, Yoshinari Sawama
ORGANIC & BIOMOLECULAR CHEMISTRY
(2020)
