Article
Chemistry, Organic
K. Bojaryn, C. Hirschhaeuser
Summary: In the presence of sparteine, chiral d1 reagents were generated through enantioselective lithiation of 2,4,6-triisopropylbenzoates. These reagents were then reacted with alpha-halo boronic esters, similar to chiral a1 reagents. Enantiomerically enriched alpha-halo boronic esters can be easily obtained through Matteson Homologation. The protocol was stabilized by using the corresponding stannane to generate the d1 reagent, resulting in moderate yields for beta-unsubstituted alpha-halo boronic esters. Good to excellent yields were obtained for beta-substituted alpha-halo boronic esters, which can be generated through iterative Matteson Homologation.
EUROPEAN JOURNAL OF ORGANIC CHEMISTRY
(2023)
Article
Oncology
Henning Tim Langer, Shakti Ramsamooj, Roger J. Liang, Rahul Grover, Seo-Kyoung Hwang, Marcus DaSilva Goncalves
Summary: This study investigated whether restoring circulating ketones could improve cachexia in lung cancer patients. Two dietary interventions were performed, and the results showed that restoring ketone levels did not improve cachexia development or survival.
FRONTIERS IN ONCOLOGY
(2022)
Article
Chemistry, Applied
Zhen Yao, Zhenli Luo, Yixiao Pan, Xin Zhang, Bohan Li, Lijin Xu, Peng Wang, Qian Shi
Summary: A metal-free tandem one-pot synthesis of 3,3-disubstituted 3,4-dihydroquinoxalin-2(1H)-ones has been achieved using visible-light photoredox catalysis. The method provides the desired products in high yields for various substrates, demonstrating great potential for practical applications.
ADVANCED SYNTHESIS & CATALYSIS
(2022)
Article
Chemistry, Organic
Li-Wen Shen, Yan-Ping Zhang, Yong You, Jian-Qiang Zhao, Zhen-Hua Wang, Wei-Cheng Yuan
Summary: A highly selective reaction method using inverse electron demand was developed, allowing the formation of diverse compounds in high yields. The reaction involved the interaction between unsaturated thioesters and 1,2,1,3-diazadienes, generated in situ from alpha-halo hydrazones.
JOURNAL OF ORGANIC CHEMISTRY
(2022)
Article
Chemistry, Organic
Yitong Chen, Chang He, Jun Chen, Guolin Zhang, Yongping Yu
Summary: An efficient and simple method for the synthesis of 1, 3-disubstituted pyrrolo[1, 2-alpha]pyrazines has been developed. It involves a palladium(II)-catalyzed cascade reaction that includes C(sp)-C(sp(2)) coupling followed by intramolecular C-N bond formation. The method can tolerate various substrates and provides satisfactory yields.
SYNTHETIC COMMUNICATIONS
(2022)
Article
Chemistry, Multidisciplinary
Theodora-Venera Apostol, Mariana Carmen Chifiriuc, George Mihai Nitulescu, Octavian Tudorel Olaru, Stefania-Felicia Barbuceanu, Laura-Ileana Socea, Elena Mihaela Pahontu, Crina Maria Karmezan, Luminita Gabriela Marutescu
Summary: In this study, the antimicrobial activity of 49 compounds derived from alanine or phenylalanine was evaluated. These compounds showed promising antimicrobial and antibiofilm activity depending on their chemical scaffold and lipophilic character, as determined through in silico and in vitro assays.
APPLIED SCIENCES-BASEL
(2022)
Article
Chemistry, Organic
Kailu Li, Qianmin Li, Qinhao Shi, Yanmin He, Wenquan Yu, Junbiao Chang
Summary: An iodine-mediated direct sp(3) C-H amination reaction has been developed for the synthesis of nitrogen-containing compounds from readily available substrates under transition-metal-free conditions. This method is operationally simple and can be conveniently conducted on a large scale under mild reaction conditions.
ASIAN JOURNAL OF ORGANIC CHEMISTRY
(2022)
Article
Chemistry, Organic
Nandkishor Chandan
Summary: A simple and convenient one-pot synthesis method has been developed for the preparation of spiro-3,4-dihydro-2H-pyrrole, while synthesizing 2,2,5-trisubstituted pyrrolidines.
INDIAN JOURNAL OF CHEMISTRY SECTION B-ORGANIC CHEMISTRY INCLUDING MEDICINAL CHEMISTRY
(2021)
Article
Chemistry, Organic
Diego Olivieri, Riccardo Tarroni, Carla Carfagna
Summary: The synthesis of dibenzyl-(1S*,2S*)-2,3-dihydro-1H-indene-1,2-dicarboxylate is achieved by a diastereospecific bis-alkoxycarbonylation reaction using 1H-indene, benzyl alcohol, and carbon monoxide. The catalyst is formed in situ by mixing Pd(TFA)(2), the ligand N-2,N-3-bis(2,6-dimethylphenyl)butane-2,3-diimine, and p-benzoquinone as the oxidant.
Article
Food Science & Technology
Claude Lambre, Jose Manuel Barat Baviera, Claudia Bolognesi, Andrew Chesson, Pier Sandro Cocconcelli, Riccardo Crebelli, David Michael Gott, Konrad Grob, Evgenia Lampi, Marcel Mengelers, Alicja Mortensen, Inger-Lise Steffensen, Christina Tlustos, Henk Van Loveren, Laurence Vernis, Holger Zorn, Laurence Castle, Emma Di Consiglio, Roland Franz, Nicole Hellwig, Maria Rosaria Milana, Stefan Merkel, Ellen Van Haver, Katharina Volk, Gilles Riviere
Summary: The CEP Panel evaluated the safety of a substance used in high impact polystyrene obtained by reaction, concluding that it does not pose a safety concern if used as an additive at up to 0.025% w/w in ABS copolymers for contact with various types of food under specified conditions.
Article
Chemistry, Multidisciplinary
Xin Zheng, Xiaojing Liu, Lijie Liu, Xiaochuan Li, Song Jiang, Caoyuan Niu, Puhui Xie, Guoxing Liu, Zhanqi Cao, Yunlai Ren, Yuchen Qin, Jianji Wang
Summary: This study reports a fluorescent single crystal with optical plastic bending and fluorescence switching properties, attributed to extended pi-conjugation and molecular slippage. The crystal also exhibits high elasticity and reversible fluorescence switching triggered by various stimuli.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Multidisciplinary
Xiaoxin Tian, Jikuan Qiu, Zhenzhen Wang, Yongkui Chen, Zhiyong Li, Huiyong Wang, Yuling Zhao, Jianji Wang
Summary: Efficient NH3 capture materials have been designed and synthesized by confining calcium chloride in a porous covalent organic framework, demonstrating high capture capacity and easy desorption, especially for low NH3 content absorption. The excellent performance is attributed to the highly dispersion of CaCl2 in the pores of the COF and coordinating interactions between NH3 and Ca2+ along with hydrogen bond interactions between NH3 and Cl-.
CHEMICAL COMMUNICATIONS
(2022)
Article
Chemistry, Physical
Jing Zhao, Yanzhuo Zhang, Hucheng Zhang, Haiyan Wang, Jianji Wang
Summary: This study demonstrates the importance of understanding the energetic characteristics of different hydrogen species in revealing catalytic reactivity and selectivity. Through the assistance of Ti, F, and C in MXenes, high capacity for spillover hydrogen storage can be achieved at ambient temperatures. The energetics perspectives provided in this study offer new insights into the catalytic mechanism in spillover-involving chemical procedures.
CATALYSIS SCIENCE & TECHNOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Xiaoyan Pei, Zhiyong Li, Huiyong Wang, Qiuju Zhou, Zuodong Liu, Jianji Wang
Summary: Surfactant-free microemulsions (SFMEs) based on ionic liquids (ILs) have shown great potential in various applications. In this study, a new kind of CO2-responsive SFME composed of quaternary ammonium IL, dimethyl sulfoxide, and ethyl acetate was developed. The microemulsion can be reversibly switched between emulsification and complete phase separation upon CO2 and N-2 bubbling. Mechanism studies confirmed that the reversible switching is due to the generation and restoration of more hydrophilic carbamate salts from the reaction of CO2 with IL anions. The CO2-switchable SFMEs were used as a microreactor for room temperature synthesis of Zn-based metal-organic frameworks, achieving successful reaction and microemulsion recycling.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2022)
Article
Chemistry, Physical
Jing Zhao, Hucheng Zhang, Haiyan Wang, Jianji Wang
Summary: This study explores the relationship between Lewis acid and base strengths on Pd-CoOx interfaces and catalytic activity, showing that the introduction of Pd can enhance catalytic performance. The findings offer insights for rational design and synthesis of heterogeneous catalysts including CO2 hydrogenation.
MOLECULAR CATALYSIS
(2022)
Review
Chemistry, Multidisciplinary
Li Sun, Kelei Zhuo, Yujuan Chen, Quanzhou Du, Suojiang Zhang, Jianji Wang
Summary: This review introduces the use of ionic liquid (IL) electrolytes combined with redox active species to enhance the energy density of supercapacitors (SCs). The introduction of redox active species contributes to pseudocapacitance and various IL-REs and their energy storage mechanisms are discussed. Future research needs to address current challenges in order to advance this promising field.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Engineering, Environmental
Haiyan Wang, Lijing Wang, Hucheng Zhang, Hao Jiang, Chunzhong Li, Jianji Wang
Summary: Sb-NC/PoMXene is synthesized by cross-linking Sb-NC and PoMXene through Ti-O-Sb bond, and it exhibits excellent properties including electronic conductivity, sulfur loading, polysulfide capture, and catalytic centers. These nanostructured hybrids provide fast ion transport and robust architecture, resulting in high capacity and long cyclability in lithium-sulfur batteries.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Physical
Songlin Wang, Nan Jiang, Yanyan Liu, Yan Hao, Qiying Zhang, Hongying Niu, Jianji Wang
Summary: In this study, Pb-Mg nanosheet catalysts with high activity, excellent stability, and recyclability were developed for solvent-free synthesis of MPC. The catalyst exhibited high DPC conversion and MPC selectivity, and could be easily separated and reused using simple centrifugation.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Chemistry, Physical
Hua Li, Xiaodong Hu, Chunfeng Wang, Yujuan Chen, Kelei Zhuo, Jianji Wang
Summary: In this study, an IL-rGA material was prepared using hydrothermal reduction and modification tactics with the assistance of an ionic liquid. The IL-rGA material, with its porous texture and modified surface, enables rapid infiltration and sufficient adsorption of electrolyte ions, resulting in a significant improvement in specific capacitance. By using this material and a specific IL electrolyte, high energy density and power density supercapacitors can be achieved, meeting the requirements of a wider range of electrical facilities.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Physical
Peng Wang, Runyao Zhao, Fengtao Zhang, Jianji Wang, Buxing Han, Zhimin Liu
Summary: This study demonstrates the rational design and controllable fabrication of a metal oxide hybrid catalyst for electrochemical water splitting, showing excellent performance in hydrogen evolution reaction. The catalyst exhibited promising application potentials with its unique biphasic microstructures.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Chemistry, Physical
Xiaohui Li, Yingying Guo, Huiyong Wang, Zhiyong Li, Jianji Wang
Summary: The regulation of anionic structures on the formation of ionic liquid vesicles in aqueous solution was investigated. It was found that the synergistic effect of hydrophobic and pi-pi interaction played a vital role in the vesicle formation of a specific ionic liquid. The reversible structural transition between vesicle and micelle was also observed.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Chemistry, Physical
Yuanchao Pei, Wanjun Zhang, Yaxin Zhang, Jie Ma, Yang Zhao, Zhiyong Li, Jianji Wang, Ran Du
Summary: The design of thermal-responsive functional ionic liquids that can respond reversibly remains a challenge for the construction of smart systems. This study prepared a series of PEGylated ionic liquids and characterized their structures and thermal properties. The physicochemical properties, including density and viscosity, were measured and modeled. The results showed that these PEGylated ionic liquids exhibited good surface activity and low critical solution temperature phase behavior. The interaction between the ionic liquids and water molecules was analyzed to understand the mechanism of thermal-induced phase separation. This study provides valuable information for designing new thermoresponsive ionic liquids and their applications.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Chemistry, Physical
Yangshuo Li, Huiyong Wang, Bing Chang, Yingying Guo, Zhiyong Li, Shamraiz Hussain Talib, Zhansheng Lu, Jianji Wang
Summary: Through liquid-phase exfoliation in N-methylpyrrolidone (NMP) assisted via aliphatic amines as intercalators, bulk ZrS2 powder was successfully exfoliated into single and few-layer nanosheets. The exfoliation yield was 27.3%, with 77.1% of ZrS2 nanosheets being 2-3 layers. The ZrS2 nanosheets exhibited higher activity in electrocatalytic dinitrogen reduction compared to ZrS2 nanofibers and bulk ZrS2 powder, indicating the great potential of liquid phase exfoliation in mass production of high activity ZrS2 nanosheets.
GREEN ENERGY & ENVIRONMENT
(2023)
Article
Chemistry, Physical
Quanzhou Du, Yuhua Zhao, Yujuan Chen, Jianming Liu, Huanhuan Li, Guangyue Bai, Kelei Zhuo, Jianji Wang
Summary: Nitrogen-doped porous carbon nanosheets (NPCNs) with unique structure were studied for their potential application as anode and cathode material in potassium-ion hybrid capacitors (PIHCs). The structural changes of NPCNs during potassiation and depotassiation were analyzed using Raman spectroscopy and transmission electron microscopy. The PIHC device assembled with NPCNs exhibited a superior energy density of 128 Wh kg-1 and a capacity retention of 90.8% after 9000 cycles. This research contributes to the development of double-functional self-matching materials for high-performance hybrid energy storage devices.
GREEN ENERGY & ENVIRONMENT
(2023)
Article
Chemistry, Multidisciplinary
Yongkui Chen, Jikuan Qiu, Xia-Guang Zhang, Huiyong Wang, Wenhui Yao, Zhiyong Li, Qingchun Xia, Guangshan Zhu, Jianji Wang
Summary: Covalent organic frameworks (COFs) have attracted significant interest as proton-exchange membranes, chemical sensors, and electronic devices. The synthesis of a light/heat switchable COF-HNU9, capable of reversible photoisomerization and high proton conductivity, has been achieved through the incorporation of a donor-acceptor Stenhouse adduct (DASA) within the COF structure. The COF-HNU9 showed a substantial increase in proton conductivity under visible light irradiation at high humidity, demonstrating promising prospects for stimuli-responsive COFs.
Article
Chemistry, Multidisciplinary
Xuemei Liu, Chaonan Cui, Shuoshuo Wei, Jinyu Han, Xinli Zhu, Qingfeng Ge, Hua Wang
Summary: This study presents a new strategy for designing efficient photocatalysts that can convert CO2 into hydrocarbons by utilizing synergistic catalytic sites. The findings provide a solution for the selective photocatalytic reduction of CO2 to CH4.
Article
Chemistry, Multidisciplinary
Chengxian Hu, Dan Wang, Lu Wang, Ying Fu, Zhengyin Du
Summary: A novel one-pot, three-component reaction conducted under electrochemical conditions was studied. The reaction involved 2-aminothiophenols, aldehydes, and malononitrile, using TBABF4 as an electrolyte and CuI as a catalyst. The proposed reaction mechanism suggested that CuI served as an electron relay. This method offers simplified operation, high atom economy, and mild reaction conditions.
Article
Chemistry, Multidisciplinary
Zhi Yang, Yu Chen, Linxi Wan, Yuxiao Li, Dan Chen, Jianlin Tao, Pei Tang, Fen-Er Chen
Summary: A highly enantioselective method for the complete hydrogenation of pyrimidinium salts using Ir/(S,S)-f-Binaphane complex as the catalyst was developed. This method provides easy access to fully saturated chiral hexahydropyrimidines, which are prevalent in many bioactive molecules. The reactions exhibit high yields and enantioselectivities under mild reaction conditions without additives. Successful application of this methodology in a continuous flow fashion further extends its practical utility.
Article
Chemistry, Multidisciplinary
Tina Jeoh, Jennifer Danger Nill, Wujun Zhao, Sankar Raju Narayanasamy, Liang Chen, Hoi-Ying N. Holman
Summary: In this study, the enzymatic hydrolysis of cellulose was investigated using real-time infrared spectromicroscopy. The spatial heterogeneity of cellulose was found to impact the hydrolysis kinetics. Hydration affected cellulose ordering, and Cel7A preferentially removed less extensively hydrogen bonded cellulose.
Article
Chemistry, Multidisciplinary
Tiphaine Richard, Walid Abdallah, Xavier Trivelli, Mathieu Sauthier, Clement Dumont
Summary: An effective method of grafting functionalities onto lignin based on glycerol carbonate has been developed using an efficient nickel-catalysed telomerisation reaction. This method allows lignin to have new reactive functions and reduces the glass transition temperatures of modified lignins, thereby expanding the application range of lignin-based resins.
Article
Chemistry, Multidisciplinary
Jing Qi, Xiyan Wang, Gan Wang, Srinivas Reddy Dubbaka, Patrick ONeill, Hwee Ting Ang, Jie Wu
Summary: This study presents a green and environmentally friendly approach for the synthesis of imides using electrocatalytic oxidation with H2O as the oxygen source. The method eliminates the need for toxic or expensive oxidants and achieves high yields under mild reaction conditions. It shows broad substrate compatibility and potential for industrial applications.
Article
Chemistry, Multidisciplinary
Babasaheb Sopan Gore, Lin-Wei Pan, Jun-Hao Lin, Yi-Chi Luo, Jeh-Jeng Wang
Summary: Here, we report a visible light-promoted intramolecular radical cascade reaction for the construction of fluorenol and naphthalene-fused cyclopropyl carbaldehyde derivatives. This method offers mild reaction conditions, a broad substrate scope, excellent step efficiency, and scalability, without the need for external chemical oxidants. The novelty of this protocol was demonstrated by synthesizing chrysene analogs and performing late-stage functionalizations.
Article
Chemistry, Multidisciplinary
Juho Antti Sirvio, Idamaria Romakkaniemi, Juha Ahola, Svitlana Filonenko, Juha P. Heiskanen, Ari Ammala
Summary: This article discusses the method of using supramolecular interaction between an aromatic hydrogen bond donor and lignin to achieve rapid delignification of softwood at low temperatures.
Article
Chemistry, Multidisciplinary
Yunyan Meng, Chunxiang Pan, Na Liu, Hongjiang Li, Zixiu Liu, Yao Deng, Zixiang Wei, Jianbin Xu, Baomin Fan
Summary: A novel visible light-driven synthesis method for 2,3-diamines has been developed, which has mild conditions, avoids the use of metal reagents, and can synthesize diamines and diols in one pot.
Article
Chemistry, Multidisciplinary
Mingqing Huang, Haiyang Huang, Mengyao You, Xinxin Zhang, Longgen Sun, Chao Chen, Zhichao Mei, Ruchun Yang, Qiang Xiao
Summary: A direct air-oxidized strategy for the synthesis of benzo[b]phosphole oxides was developed in this study. Arylphosphine oxides were transformed into phosphinoyl radicals, which were further combined with various alkynes to achieve the desired products. DFT calculations revealed the mechanism of phosphinoyl radical formation.
Article
Chemistry, Multidisciplinary
Anwei Wang, Jiayin Huang, Chunsheng Zhao, Yu Fan, Junfeng Qian, Qun Chen, Mingyang He, Weiyou Zhou
Summary: This study demonstrates an innovative strategy for the aerobic oxidation of C(sp(3))-H bonds using gamma-valerolactone. By optimizing the reaction conditions and utilizing specific catalysts, efficient oxidation of C(sp(3))-H bonds is achieved with good chemoselectivity in certain cases.
Article
Chemistry, Multidisciplinary
Shun Li, Likai Tong, Zhijian Peng, Bo Zhang, Xiuli Fu
Summary: Sulfide compounds show promise as electrocatalysts for water splitting, but their performance is limited by factors such as limited active sites and hindered substance transport. This study successfully prepared a high-entropy sulfide (ZnCoMnFeAlMg)(9)S-8, which reduced grain size and increased specific surface area, enabling the realization of a dual-functional catalyst with multiple catalytic sites. High entropy also modulated the electronic properties of sulfides, reducing the potential energy barrier for hydrolysis. This research introduces a new approach for functionalizing high entropy nanomaterials and improves the performance of water splitting catalysts.
