Article
Chemistry, Organic
Tsubasa Hirata, Yoshihiro Ogasawara, Yasuhiro Yamashita, Shu Kobayashi
Summary: Under blue-light irradiation conditions, silyl enol ethers reacted with alkenes in the presence of a small amount of water to afford alpha-alkylation products in good to high yields, with the substrate scope of the reaction being expanded by a thiol cocatalyst.
Article
Chemistry, Multidisciplinary
Matan M. Meirovich, Oren Bachar, Ramesh Nandi, Nadav Amdursky, Omer Yehezkeli
Summary: Efforts have been made to understand the interaction between semiconductor nanoparticles and nitrogenase enzyme for photoinduced biocatalytic activity. Two variants of nitrogenase were studied, with one not enhancing hydrogen generation amounts, but 2.3 nm-sized CdSe NPs showed an eightfold increase in activity compared to larger NPs. Techniques like electrochemical analysis and spectroscopic measurements were used to confirm the results.
Article
Multidisciplinary Sciences
Mohana Reddy Mutra, Jeh-Jeng Wang
Summary: This paper presents a method for the cleavage, migration, and functionalization of C(sp)-N bonds in ynamides under blue LED light without the use of metals or additives. This method has important implications in the synthesis of specific compounds.
NATURE COMMUNICATIONS
(2022)
Article
Chemistry, Multidisciplinary
Ransong Ma, Zhoubin Deng, Ke-Hu Wang, Junjiao Wang, Danfeng Huang, Yingpeng Su, Yulai Hu, Xiaobo Lv
Summary: An efficient and novel photoinduced trifluoromethylation using CF3Br as a trifluoromethyl source is described. With commercially accessible fac-Ir(III)(ppy)3 as the catalyst, successful radical trifluoromethylation between O-silyl enol ether and CF3Br occurs. This method provides various alpha-CF3-substituted ketones with a broad substrate scope in good yields under mild reaction conditions.
Article
Engineering, Environmental
Liping Fang, Ling Xu, Jia Deng, Shuxian Gao, Li-Zhi Huang
Summary: The transformation of green rust to form ferric oxyhydroxide is important in iron cycles in subsurface environments. Phosphate enhances the generation rate of hydroxyl radicals during green rust oxygenation. Phosphate decreases the electron utilization ratio of green rust but increases the electron selectivity for hydroxyl radical production under oxic conditions.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Organic
Wei-Wei Ding, Yu Zhou, Shun Song, Zhi-Yong Han
Summary: A Pd-catalyzed and photoinduced benzylic cascade reaction has been successfully developed, enabling the efficient synthesis of a series of organic compounds under mild conditions.
Review
Chemistry, Inorganic & Nuclear
Yoshiaki Tanabe, Yoshiaki Nishibayashi
Summary: Recent studies summarize the use of transition metal-dinitrogen complexes for catalytic nitrogen fixation, with successful Mo catalytic systems and H2O as a proton source for NH3 formation. Future research plans aim to improve catalytic systems for increased efficiency.
COORDINATION CHEMISTRY REVIEWS
(2022)
Article
Chemistry, Organic
Lin Chen, Kai Jiang, Guohui Zeng, Biaolin Yin
Summary: A mild strategy for intermolecular cross-dehydrocoupling of Csp2-H bonds and Csp3-H bonds has been developed with the aid of photoinduced Pd catalysis. Substituted styrenes and N-arylacrylamides with simple ethers or amides as the coupling partners give good yields.
Article
Environmental Sciences
Bingbing Sun, Eddy Y. Zeng
Summary: The study examined the transfer kinetics of polybrominated diphenyl ethers (PBDEs) from different plastic materials under gut surfactants, showing variations in diffusion coefficients and apparent activation energies of PBDEs in different plastics, as well as a range of biota-plastic accumulation factors. While ingestion of common size MPs showed negligible contribution to bioaccumulation of PBDEs in lugworms, their contribution may increase with gradual breakdown of MPs.
ENVIRONMENTAL POLLUTION
(2022)
Article
Chemistry, Organic
Zhen-Hua Wang, Li-Wen Shen, Ping Yang, Yong You, Jian-Qiang Zhao, Wei-Cheng Yuan
Summary: An efficient Cu-catalyzed annulation reaction has been developed for the synthesis of 4-trifluoromethylquinolines from ketone oxime acetates and ortho-trifluoroacetyl anilines. The reaction proceeds under redox-neutral conditions with good to excellent yields.
JOURNAL OF ORGANIC CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Hajar Baguia, Jerome Beaudelot, Cecile Moucheron, Gwilherm Evano
Summary: An efficient and general process for the direct perfluoroalkylation of C-H bonds in heteroarenes using copper catalysis has been reported. The reaction is photoinduced and operates at room temperature, making it a redox neutral process.
CHEMICAL COMMUNICATIONS
(2022)
Article
Biochemistry & Molecular Biology
Sandra Estebanez, Ana M. Rivera, Jael R. Neyra Recky, Andres H. Thomas, Virginie Lhiaubet-Vallet, Carolina Lorente
Summary: The research shows that under anaerobic conditions, G is able to reduce the radicals of T but does not prevent the formation of Ptr-T adducts.
FREE RADICAL BIOLOGY AND MEDICINE
(2021)
Article
Chemistry, Multidisciplinary
Aaron Sattler, Michele Paccagnini, Elaine Gomez, Randall J. Meyer, Sara Yacob, Henry Klutse, Michael Caulfield, Yuan Gao
Summary: This study focuses on the application of ethane dehydrogenation in membrane reactors, evaluating the adaptability of catalysts to new gas-phase compositions by simulating hydrogen removal conditions. The results indicate that the catalyst is adversely affected by reactions under hydrogen removal conditions, limiting ethylene yields.
ENERGY & ENVIRONMENTAL SCIENCE
(2022)
Article
Engineering, Environmental
R. S. Postma, P. S. F. Mendes, L. Pirro, A. Banerjee, J. W. Thybaut, L. Lefferts
Summary: The interplay between catalytic activation of methane on Fe (c) SiO2 and gas-phase free radical methane coupling under non-oxidative conditions is analyzed by mechanistic modeling and experiments. The model validates the significant contribution of gas-phase reactions responsible for methane conversion and the low-activity induction period in gas-phase methane pyrolysis can be overcome by catalytic activation. Gas-phase reactions determines the selectivity distribution while catalytic reaction only influences the activity of the system.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Organic
Li-Lin Jiang, Hui Qiu, Yu Zhou, Ling-Tao Wang, Wen-Hui Yang, Chao Deng, Wen-Ting Wei
Summary: A novel 1,2,2-trifunctionalization of maleimides with 1,7-enynes and oxime esters has been achieved through simultaneous construction of four C-C bonds and a C=N bond in one pot based on a mild copper catalytic system. The resulting spirocyclic derivatives exhibit high chemical selectivity, broad substrate scope, as well as high atom- and step-economy.
ORGANIC CHEMISTRY FRONTIERS
(2023)
Article
Chemistry, Multidisciplinary
Julie L. Hofstra, Alan H. Cherney, Ciara M. Ordner, Sarah E. Reisman
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2018)
Article
Chemistry, Organic
Naoyuki Suzuki, Julie L. Hofstra, Kelsey E. Poremba, Sarah E. Reisman
Article
Chemistry, Multidisciplinary
Julie L. Hofstra, Kelsey E. Poremba, Alex M. Shimozono, Sarah E. Reisman
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2019)
Article
Chemistry, Physical
Bruce J. Wittmann, Anders M. Knight, Julie L. Hofstra, Sarah E. Reisman, S. B. Jennifer Kan, Frances H. Arnold
Article
Chemistry, Physical
Mohammad H. Samha, Julie L. H. Wahlman, Jacquelyne A. Read, Jacob Werth, Eric N. Jacobsen, Matthew S. Sigman
Summary: This study explores hydrogen bond-based organocatalysts using data science tools, revealing the synergistic effect of their structural components and constructing statistical models for predicting high enantioselectivity. The results demonstrate a significant dependence on the identity of the reaction partners and catalysts, and show the predictive capability of the models.
Article
Chemistry, Multidisciplinary
Jonas Rein, Jonathan M. Meinhardt, Julie L. Hofstra L. Wahlman, Matthew S. Sigman, Song Lin
Summary: In this study, a multivariate linear regression model was used to predict the decomposition temperature and impact sensitivity of structurally diverse tetrazoles and organic azides, providing important references for the safe and effective application of these compounds. The statistical models have high predictive accuracy and chemical interpretability, which were validated by tetrazole test sets generated exclusively in silico. Mechanistic analysis of the statistical models revealed distinct divergent pathways of thermal and impact-initiated decomposition.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Organic
Julie L. Hofstra, Travis J. DeLano, Sarah E. Reisman