Article
Chemistry, Multidisciplinary
An Lin, Rui Lu, Xiaolin Luo, Lei Zhang, Fang Lu
Summary: This study developed a sustainable route for the synthesis of naphthalenedicarboxylic acid derivatives using lignocellulose-derived raw materials. By conducting Diels-Alder and hydrogenation reactions in multiple steps, the overall yield could reach 50%.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2021)
Article
Chemistry, Applied
Rafaela F. Cotta, Rafael A. Martins, Kelly A. da Silva Rocha, Elena F. Kozhevnikova, Ivan Kozhevnikov, Elena Gusevskaya
Summary: The acidic cesium salt of tungstophosphoric heteropoly acid was found to be an excellent solid acid catalyst for the reaction between phenylacetaldehyde and biorenewable monoterpenic alkenes, resulting in new products with high yields and sustainability.
Article
Chemistry, Multidisciplinary
Razvan C. Cioc, Tom J. Smak, Marc Crockatt, Jan C. van der Waal, Pieter C. A. Bruijnincx
Summary: The furan Diels-Alder (DA) cycloaddition reaction is an important tool in green chemistry, and the use of 2-furoic acids and their derivatives has been shown to be reactive in Diels-Alder couplings with maleimide dienophiles, benefiting from rate enhancement when water is used as solvent and activation through conversion to carboxylate salts. This approach allows for mild conditions to perform Diels-Alder reactions, even with unreactive dienes, and the obtained DA adducts of furoic acids are versatile in the conversion to various saturated and aromatic carbocyclic products.
Article
Polymer Science
Dina Maniar, Csaba Fodor, Indra Karno Adi, Albert J. J. Woortman, Jur van Dijken, Katja Loos
Summary: Enzyme catalysis was used to design biobased unsaturated polyesters with minimum side reactions, showing excellent thermal stabilities and unreacted alkene functionality. This method offers new opportunities in the fields of unsaturated polyester resins and photosensitive coatings.
Article
Polymer Science
Dina Maniar, Csaba Fodor, Indra Karno Adi, Albert J. J. Woortman, Jur van Dijken, Katja Loos
Summary: The study involved designing unsaturated aliphatic (co)polyester systems using different diester-modified muconic acid isomers through an eco-friendly pathway of enzymatic polymerization. The results showed variations in molecular weights and thermal properties among the different cis,cis-(Z,Z)-muconate and cis,trans-(Z,E) isomeric structures. Overall, enzymatic polymerization was found to be a robust approach for the synthesis of unsaturated polyesters.
POLYMER INTERNATIONAL
(2021)
Article
Chemistry, Organic
Yiming Zhao, Fernanda Meloni, Louise Male, Cecile S. Le Duff, William D. G. Brittain, Benjamin R. Buckley, John S. Fossey
Summary: The synthesis of atropisomeric phoshino-triazoles is described. Phosphine introduction at the 5-position of a 1,2,3-triazole ring restricts rotation around a triazole-aryl bond. VT NMR and chiral HPLC studies confirm the conformational stability at high temperatures. Gold(i) chloride complexes of single-enantiomer phosphines also show conformational stability.
ORGANIC CHEMISTRY FRONTIERS
(2023)
Article
Chemistry, Multidisciplinary
Prerana Carter, James L. Trettin, Ting-Han Lee, Nickolas L. Chalgren, Michael J. Forrester, Brent H. Shanks, Jean-Philippe Tessonnier, Eric W. Cochran
Summary: This paper introduces a novel method for synthesizing monomers with custom property enhancements and demonstrates through experiments that the resulting polyamides exhibit excellent properties such as built-in hydrophobicity and flame retardancy.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Chemistry, Physical
Joshua Clarke, Youngran Seo, Michel R. Gagne, Trandon A. Bender
Summary: This perspective discusses the key lessons learned from a program aiming to selectively deoxygenate cellulose-derived carbohydrates, with a focus on noneliminative mechanisms and the use of fluoroaryl borane catalysts. The control of substrate and catalyst over the deoxygenation process is crucial, and the lessons from this catalysis program can be applied to other important problems in catalysis and selectivity.
Article
Chemistry, Multidisciplinary
Shuxuan Liu, Hui Qian, Tianyu Zhang, Hongling Xie, Zhengyu Han, Wengang Guo, Hai Huang, Jianwei Sun
Summary: This study presents a new method for accessing cyclopropanes embedded in a polycyclic bridged architecture through a mild intermolecular convergent process. Unlike conventional approaches, this protocol does not require highly active carbenoid intermediates or strong conditions. The key cyclopropane ring is formed between the well-positioned nucleophile and electrophile in the adduct, showing a new reactivity of the versatile isobenzopyryliums.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Multidisciplinary Sciences
Haofu Zhu, Pan-Pan Zhou, Yao Wang
Summary: This study reports a new method for activating aziridines by cooperative sulfur-arsenic bonding interactions, enabling their use in cycloaddition reactions with nonactivated alkenes.
NATURE COMMUNICATIONS
(2022)
Article
Engineering, Environmental
Jiaxin Ma, Yidong Cao, Linwang Fan, Yanli Xie, Xueqing Zhou, Qipeng Ren, Xiaofeng Yang, Xia Gao, Yuhong Feng
Summary: The degradation process of different types of mulch in agriculture and its effect on the soil ecosystem were comprehensively investigated. The changes in performance, structure, morphology, and composition of PBAT film during degradation were examined and compared with several PE films. The effects of film degradation on soil physicochemical properties were also studied. The results showed that PBAT film exhibited the highest degree of degradation, and the soil properties were influenced by the changes in film structure and components. This study has practical implications for sustainable agriculture.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Morgane de Robichon, Thilo Kratz, Frederike Beyer, Julian Zuber, Christian Merten, Thorsten Bach
Summary: Substituted bicyclo[1.1.0]butanes add enantioselectively to 2(1H)-quinolones upon irradiation, leading to the formation of products with a chiral bicyclo[2.1.1]hexane skeleton. A two-point hydrogen bond between the quinolone and the template is responsible for stereocontrol in the photocycloaddition reaction. The chiral template can be recovered and reused, and sensitization is a suitable tool for performing the reaction with visible light.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Multidisciplinary
Hsi-Hsin Lin, Yan Cheng, Jiajie Huo, Brent H. Shanks
Summary: The study investigated the amidation of bioderived platform molecules and its influencing factors, revealing a correlation between molecular structure and ammonolysis reactivity, leading to enhanced selectivity for unsaturated amides.
Article
Chemistry, Physical
Yuting He, Yuehui Luo, Mingyu Yang, Yanhua Zhang, Lijuan Zhu, Minghui Fan, Quanxin Li
Summary: The efficient synthesis of bio-based chemicals from renewable lignocellulosic biomass is explored in this study. The selective catalytic pyrolysis of sawdust biomass was used to produce p-xylene intermediate, followed by the selective oxidation of the biomass-derived aromatic intermediates to terephthalic acid using metal oxide catalysts. High yields and selectivity were achieved in the process.
APPLIED CATALYSIS A-GENERAL
(2022)
Article
Chemistry, Multidisciplinary
Xuan-Yu Liu, Yi-Lin Yang, Yanfeng Dang, Ilan Marek, Fa-Guang Zhang, Jun-An Ma
Summary: Selective structural modification of amino acids and peptides is a central strategy in various scientific fields. This study demonstrates a novel and efficient method to transform proteinogenic alpha-amino acids into tetrazole-decorated amino acid derivatives using aryldiazonium salts. The reaction mechanism and origins of selectivity are investigated, and the protocol is also applied to construct tetrazole-modified peptidomimetics and drug-like amino acid derivatives.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Applied
Junjie Zhang, Fang Lu, Weiqiang Yu, Jiazhi Chen, Shuai Chen, Jin Gao, Jie Xu
Article
Chemistry, Physical
Jiazhi Chen, Fang Lu, Junjie Zhang, Weiqiang Yu, Feng Wang, Jin Gao, Jie Xu
Article
Chemistry, Multidisciplinary
Yanliang Yang, Zhongtian Du, Jiping Ma, Fang Lu, Junjie Zhang, Jie Xu
Article
Chemistry, Physical
Junjie Zhang, Tingting Jiang, Yuliang Mai, Xi Wang, Jiazhi Chen, Bing Liao
CATALYSIS COMMUNICATIONS
(2019)
Article
Chemistry, Multidisciplinary
Junjie Zhang, Junhui Mai, Jiazhi Chen, Xi Wang, Yuliang Mai
Summary: By utilizing activated carbon supported Nb2O5 catalysts, cyclopentene was selectively oxidized to glutaraldehyde, achieving high conversion and selectivity under optimized conditions. Radicals trapping experiments and infrared spectra characterization revealed that superoxide radicals and Nb(OO) species play crucial roles in the catalytic oxidation process, while adsorbed organic species could deactivate the catalyst.
Article
Chemistry, Multidisciplinary
Xi Wang, Tingting Jiang, Jiazhi Chen, Junjie Zhang, Yuliang Mai
Summary: Engineering the pore structure and surface properties of the catalyst is crucial for the efficient conversion of low-concentration and high-throughput formaldehyde at room temperature. In this study, alkali-modified hierarchical porous Na-CoOx/CN material was prepared and showed full conversion of low concentration and high throughput formaldehyde at room temperature, while maintaining excellent catalytic stability.
Article
Chemistry, Multidisciplinary
Tingting Jiang, Xi Wang, Jiazhi Chen, Junjie Zhang, Yuliang Mai
Summary: In this study, a series of MnOx catalysts were prepared by pyrolysis of Mn-MOF-74 precursors, and their properties were characterized. The MnOx-700 catalyst exhibited excellent activity for the catalytic oxidation of chlorobenzene, with a high ratio of Mn3+/Mn4+ and an O-sur/O-total ratio. This work provides an idea for the further development of high efficiency catalysts prepared via MOF-template in the decomposition of chlorobenzene.
Article
Chemistry, Physical
Junjie Zhang, Xueying Wu, Jiazhi Chen, Xi Wang, Yuliang Mai
Summary: Researchers have developed a highly efficient Cu-Cu2O@NC catalyst for the dehydrogenation of glycerol to lactic acid under high temperature aqueous conditions. The catalyst exhibited high conversion and selectivity, as well as excellent stability and reusability.
Article
Chemistry, Multidisciplinary
Junjie Zhang, Tujin Liu, Jiazhi Chen, Kangle Jia, Yuliang Mai
Summary: Nb2O5 catalysts with different morphologies were synthesized and used for thioether oxidation at room temperature under solvent-free conditions with H2O2 as the oxidant. Selective formation of sulfoxides in good to excellent selectivities was realized using spherical Nb2O5 as the catalysts, while selective formation of sulfones with excellent selectivities was achieved with layered Nb2O5 as the catalysts. Different morphologies of Nb2O5 catalysts possessed different surface areas and acid amounts. A non-radical mechanism with Nb(OO) as the possible reactive oxygen species is proposed for thioether oxidation over spherical or layered Nb2O5 catalysts. Both the spherical and layered Nb2O5 catalysts demonstrated excellent reusability. There were no obvious changes for their catalytic performance after being recycled for ten runs. This study illustrates a means to modulate the catalytic activity for H2O2-based catalytic reactions by changing the catalyst morphology.
Article
Chemistry, Physical
Junjie Zhang, Guozhi Zhu, Xi Wang, Yuliang Mai, Jiazhi Chen
Summary: Cu-Zn MOF derived Cu-ZnO@C catalysts were developed for glycerol conversion to lactic acid in nitrogen gas. The Cu-ZnO@C1.4-750 catalyst achieved complete conversion of glycerol with 83.2% selectivity for lactic acid at 220 oC in 1 hour. It demonstrated high activity and size stability due to highly dispersed Cu0/Cu+ species, proper Cu-ZnO interfaces, and C coating.
CATALYSIS COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Xi Wang, Jiawei Ying, Yuliang Mai, Junjie Zhan, Jiazhi Chen, Mingtong Wen, Lin Yu
CATALYSIS SCIENCE & TECHNOLOGY
(2019)
Article
Chemistry, Applied
Junjie Zhang, Fang Lu, Weiqiang Yu, Rui Lu, Jie Xu
CHINESE JOURNAL OF CATALYSIS
(2016)
Article
Chemistry, Applied
Jiaying Cai, Hong Ma, Junjie Zhang, Zhongtian Du, Yizheng Huang, Jin Gao, Jie Xu
CHINESE JOURNAL OF CATALYSIS
(2014)
Article
Chemistry, Applied
Song Qi, Cai Jiaying, Zhang Junjie, Yu Weiqiang, Wang Feng, Xu Jie
CHINESE JOURNAL OF CATALYSIS
(2013)