Article
Nanoscience & Nanotechnology
Xin-Nan Zou, Deshan Zhang, Tian-Xiang Luan, Qiang Li, Lei Li, Pei-Zhou Li, Yanli Zhao
Summary: A zirconium-based metal-organic framework with photo-responsive properties and high stability was constructed as an efficient heterogeneous photocatalyst for the oxidation of sulfides. It exhibited high efficiency and selectivity in converting sulfides under blue light irradiation, showing promising potential for various applications.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Organic
Xianda Wu, Yuqing Li, Minghong Chen, Fu-Sheng He, Jie Wu
Summary: A novel and efficient method for the synthesis of sulfilimines has been developed using diaryliodonium salts for the S-arylation of sulfenamides. The reaction proceeds smoothly under transition-metal-free and air conditions, resulting in good to excellent yields of sulfilimines via selective S-C bond formation. This scalable protocol exhibits a broad substrate scope, good functional group tolerance, and excellent chemoselectivity.
JOURNAL OF ORGANIC CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Jincheng Xu, Yang Li, Tianling Ding, Hao Guo
Summary: This method is a convenient protocol for the synthesis of quinoline-4-carbaldehydes via chemoselective oxidation of 4-methylquinolines using hypervalent iodine(III) reagents as oxidant. It offers metal-free and mild reaction conditions, nice yield, good functional group tolerance, and high chemoselectivity.
CHEMISTRY-AN ASIAN JOURNAL
(2021)
Article
Energy & Fuels
G. Surender, Fatin Saiha Omar, Shahid Bashir, M. Pershaanaa, S. Ramesh, K. Ramesh
Summary: Renewable energy requires efficient storage devices for balancing electricity demand and supply. In this study, a cobalt sulfide electrode modified with different metals, such as manganese and copper, demonstrated enhanced performance in terms of specific capacitance and cycling stability. Among the electrodes tested, Mn-CoS-3/NF exhibited the best rate capability and capacitance retention, attributed to its unique nanostructure and low internal resistance.
JOURNAL OF ENERGY STORAGE
(2021)
Article
Chemistry, Multidisciplinary
Xuan Kan, Jian-Cheng Wang, Zhi Chen, Jia-Qi Du, Jing-Lan Kan, Wen-Yan Li, Yu-Bin Dong
Summary: In this study, a novel type of chiral covalent organic frameworks (CCOFs) was reported for the first time, which can achieve enantioselective photocatalytic reactions. The researchers successfully applied this framework to the photooxidation reaction of sulfides to sulfoxides and the synthesis of (R)-modafinil.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Agricultural Engineering
Juanhua Kong, Lixia Li, Qiang Zeng, Zhenping Cai, Yingying Wang, Hongyan He, Sijie Liu, Xuehui Li
Summary: A surfactant-free microemulsion reactor was designed to enhance the oxidative depolymerization of lignin, resulting in a substantial improvement in phenolic monomer yield. This intensification was rationalized by the solubilization effect of the microemulsion system and directional aggregation of lignin at the microemulsion interface.
BIORESOURCE TECHNOLOGY
(2021)
Article
Chemistry, Physical
Wenhui Wang, Wei Gao, Xinhao Nie, Weihua Liu, Xiang Cheng, Ningzhao Shang, Shutao Gao, Chun Wang
Summary: A series of hyper-cross-linked polymers (HCPs) photocatalysts were synthesized through Friedel-Crafts alkylation reaction. Different crosslinkers could change the energy level of HCPs, affecting their photocatalytic performance. Among them, DCM-HCPs showed the highest conversion and selectivity, as well as high production of H2O2 under blue LED lamp and sunlight irradiation.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Chemistry, Organic
Yi Zhou, Zhuojun Li, Minghui Hu, Zhaohua Yan, Sen Lin
Summary: A novel oxidation system SO2F2/H2O2/base was investigated for the oxidation of sulfides, and the corresponding sulfones were smoothly generated in good to excellent yields. The effects of base and solvent on the oxidation process were studied, and it was found that this oxidation system is tolerant to various functional groups. A distinct advantage of this method is that the by-products produced are all water-soluble inorganic compounds, making their removal convenient and greatly simplifying the purification process of the products.
CHINESE JOURNAL OF ORGANIC CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Juan Meng, Zhihan Tong, Haixin Sun, Yongzhuang Liu, Suqing Zeng, Jianing Xu, Qinqin Xia, Qingjiang Pan, Shuo Dou, Haipeng Yu
Summary: An efficient strategy of introducing boron atoms into phosphorus-doped nanoporous carbon alters the electronic structures of active sites, leading to better catalytic performance. The B/P co-doped nanoporous carbon exhibits remarkable catalytic activity for benzyl alcohol oxidation, achieving high yield and selectivity, as well as low activation energy. Moreover, it maintains high conversion and selectivity after multiple reaction cycles. Density functional theory calculations demonstrate that the introduction of boron significantly increases the electron density and changes the reaction pathway for benzyl alcohol oxidation.
Article
Chemistry, Multidisciplinary
Robert Obertik, Josef Chudoba, Jiri Sturala, Jan Tarabek, Lucie Ludvikova, Tomas Slanina, Burkhard Koenig, Radek Cibulka
Summary: Catalyst recovery is crucial in photoredox catalysis, and conventional methods using sacrificial agents may cause side reactions. This study presents a new approach using acetonitrile as both an electron acceptor for catalyst recovery and a solvent in anaerobic conditions. The unique properties of the catalyst, 7,8-dimethoxy-3-methyl-5-phenyl-5-deazaflavinium chloride, allow for efficient chemoselective photooxidation reactions. Mechanistic studies reveal that the electron release from an excited deazaflavin radical to acetonitrile is essential for catalyst recovery.
CHEMISTRY-A EUROPEAN JOURNAL
(2022)
Article
Chemistry, Organic
Zenghui Ye, Rongjin Zhu, Feng Wang, Haobin Jiang, Fengzhi Zhang
Summary: Atom- and step-economic oxo-azidation and oxo-hydroxyphthalimidation of styrenes were developed under mild electrolytic conditions, leading to efficient synthesis of valuable alpha-azido or hydroxyphthalimide aromatic ketones from readily available starting materials. Mechanism studies revealed two different pathways involved in these transformations.
Article
Chemistry, Organic
Cheng-Yu Long, Hao Chen, Cheng Ma, Bo-Wei Zhao, Shen-Huan Li, Yue Cui, Xinge Yang, Shao-Fei Ni, Xue-Qiang Wang
Summary: A Ni-catalyzed protecting-group-free C-C coupling protocol has been developed for the efficient synthesis of 2,2'-biphenol derivatives. This newly developed strategy demonstrates remarkable chemoselectivity control ability, wide substrate scope, and excellent functional group tolerance.
Article
Engineering, Environmental
Jagadish Das, Daniel Shem-Tov, Shuaizhong Wang, Lei Zhang, Eli Flaxer, Shijie Zhang, Jorg Stierstorfer, Kangcai Wang, Qi-Long Yan, Roman Dobrovetsky, Michael Gozin
Summary: The race and competition in aerospace technologies based on environmentally friendly green propulsion systems with green fuels and oxidizers are attracting significant attention. A new synthetic approach has been developed for the synthesis and characterization of air/moisture stable solid H2O2-hypergols, based on Cu and Co complexes of bis(5-tetrazolyl) amine ligand, showing promising results for further development of novel, green, solid fuels for propulsion systems. These compounds exhibit short ignition delay time and high thermostability, with structure-activity relationship studies providing valuable insights for future research.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Multidisciplinary
Tingting Chen, Hao Ying, Chenyun Zhang, Jiahui Bi, Zhonghao Li, Jingcheng Hao
Summary: By utilizing a deep eutectic solvent approach and subsequent annealing process, a hybrid catalyst of crystalline Fe2O3 with amorphous FeS was developed, which demonstrated high efficiency for N-2 fixation with an NH3 yield of 34.31 mu g h(-1) mg(cat).(-1) and a faradaic efficiency of 18.06% at -0.25 V versus a reversible hydrogen electrode.
CHEMICAL COMMUNICATIONS
(2021)
Article
Chemistry, Organic
Jixia Fan, Yifan Du, Rongrong Zhao, Qixing Liu, Haifeng Zhou
Summary: A simple and practical method using tetra-hydroxydiboron [B2(OH)4] as a deoxygenative agent is described for the reduction of sulfoxides into sulfides. Various sulfoxides were successfully converted into corresponding sulfides with high yields of 92-99%. This work demonstrates the wide applicability and practicality of B2(OH)4 beyond its previous applications.
Article
Materials Science, Multidisciplinary
A. Polyzoidis, M. Schwarzer, S. Loebbecke, C. G. Piscopo
Article
Chemistry, Multidisciplinary
Emanuele Paris, Franca Bigi, Danielle Cauzzi, Raimondo Maggi, Giovanni Maestri
Article
Chemistry, Multidisciplinary
C. G. Piscopo, J. Tochtermann, M. Schwarzer, D. Boskovic, R. Maggi, G. Maestri, S. Loebbecke
REACTION CHEMISTRY & ENGINEERING
(2018)
Article
Chemistry, Organic
Alessandra Casnati, Antonio Perrone, Paolo P. Mazzeo, Alessia Bacchi, Raffaella Mancuso, Bartolo Gabriele, Raimondo Maggi, Giovanni Maestri, Elena Motti, Andras Stirling, Nicola Della Ca'
JOURNAL OF ORGANIC CHEMISTRY
(2019)
Article
Chemistry, Multidisciplinary
Emanuele Paris, Claudio Oldani, Antonino S. Arico, Claudia D'Urso, Franca Bigi, Giovanni Maestri, Francesco Pancrazzi, Raimondo Maggi
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2019)
Article
Chemistry, Multidisciplinary
C. G. Piscopo, L. Voellinger, M. Schwarzer, A. Polyzoidis, D. Boskovic, S. Loebbecke
Article
Chemistry, Organic
Nicola Camedda, Matteo Lanzi, Franca Bigi, Raimondo Maggi, Giovanni Maestri
Summary: The cascade reaction promoted by MnO2 allows the synthesis of fused tricycles with a naphthalene core under ambient conditions. This practical synthetic tool utilizes inexpensive and abundant manganese species, affording products through propargyl alcohol oxidation, stepwise Diels-Alder cyclization, and rearomatization. Density functional theory shows that the usually unfavorable stepwise Diels-Alder mechanism can be a general tool for challenging dearomative annulation.
Article
Chemistry, Physical
Franca Bigi, Gianpiero Cera, Raimondo Maggi, Yanlan Wang, Max Malacria, Giovanni Maestri
Summary: This study utilizes density functional theory modeling to investigate the mechanistic study of the cycloisomerization of polyunsaturated substrates catalyzed by all-metal aromatic tripalladium complexes and carboxylic acids. The results confirm the unique mechanistic differences exerted by these emerging catalysts and their close parallel to the mechanism of the aromatic substitution of regular arenes.
JOURNAL OF PHYSICAL CHEMISTRY A
(2021)
Article
Chemistry, Multidisciplinary
Andrea Serafino, Maurizio Chiminelli, Davide Balestri, Luciano Marchio, Franca Bigi, Rai-mondo Maggi, Max Malacria, Giovanni Maestri
Summary: Visible-light-promoted dimerization of arylacryloyl allenamides can be achieved at room temperature using an iridium(III) photocatalyst. This reaction leads to the formation of complex molecular architectures with high selectivity, and the outcome is determined by the substitution pattern of the alkene.
Article
Chemistry, Organic
Nicola Camedda, Franca Bigi, Raimondo Maggi, Giovanni Maestri
Summary: A sequential strategy enables the challenging assembly of dihydronaphthalenes through the key annulation of an alkyne with a vinylarene under mild conditions. The products are obtained in good yields and exhibit high functional tolerance, thanks to the domino nucleophilic substitution and dearomative Diels-Alder and ene reactions. DFT modeling data suggest that alkali cations play a crucial role in ensuring a smooth dearomative cyclization of the in situ generated intermediates.
Article
Chemistry, Multidisciplinary
Franca Bigi, Daniele Cauzzi, Nicola Della Ca, Max Malacria, Raimondo Maggi, Elena Motti, Yanlan Wang, Giovanni Maestri
Summary: This manuscript provides an overview of the literature on trinuclear complexes with delocalized metal-metal bonds resembling regular aromatics, composed of main group elements. The focus is on the structural and electronic features of stable aromatic clusters, along with their reported catalytic applications, including C-C forming cascades and cross-coupling methods. These examples highlight the unique reactivity exhibited by all-metal aromatic complexes, which often surpass their mononuclear counterparts in terms of chemoselectivity and chemical robustness.
ACS ORGANIC & INORGANIC AU
(2022)
Article
Chemistry, Multidisciplinary
Rosanna Viscardi, Vincenzo Barbarossa, Daniele Mirabile Gattia, Raimondo Maggi, Giovanni Maestri, Francesco Pancrazzi
NEW JOURNAL OF CHEMISTRY
(2020)
Article
Chemistry, Multidisciplinary
Gianpiero Cera, Matteo Lanzi, Franca Bigi, Raimondo Maggi, Max Malacria, Giovanni Maestri
CHEMICAL COMMUNICATIONS
(2018)
Article
Chemistry, Physical
Calogero G. Piscopo, Maud Schwarzer, Michael Herrmann, Anna Affini, Paolo Pelagatti, Giovanni Maestri, Raimondo Maggi, Stefan Loebbecke
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.
