Review
Chemistry, Multidisciplinary
Purushothaman Rajeshwaran, Jonathan Trouve, Khalil Youssef, Rafael Gramage-Doria
Summary: The Wacker reaction is a significant industrial transformation that oxidizes olefins to ketones. However, it typically requires expensive palladium catalysts, which has led to the development of Wacker-type processes that avoid their use, allowing for more sustainable procedures.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Organic
Igors Sokolovs, Edgars Suna
Summary: A straightforward and scalable approach to a new class of cyclic hypervalent Br(III) species is developed, which involves the anodic oxidation of aryl bromide to produce dimeric benzbromoxole. This dimeric compound serves as a versatile platform for accessing various structurally diverse Br(III) congeners including acetoxy-, alkoxy-, and ethynyl-?(3)-bromanes as well as diaryl-?(3)-bromanes. The synthetic utility of dimeric ?(3)-bromane is demonstrated through photo induced Minisci-type heteroarylation reactions and benzylic oxidation.
Article
Biochemistry & Molecular Biology
Lijun Wang, Lingxia Chen, Zixuan Qin, Ke Ni, Xiao Li, Zhiyuan Yu, Zichen Kuang, Xinshu Qin, Hongxia Duan, Jie An
Summary: This study discovered that iodine can be used as a cheap, low-toxicity catalyst for the aerobic oxidation of thiols. By utilizing sustainable oxygen as the terminal oxidant, primary and secondary thiols can be efficiently converted to disulfides.
Article
Chemistry, Multidisciplinary
Mohsen Rostami Sakha, Parya Halimitabrizi, Saeed Soltanali, Fatemeh Ektefa, Zeinab Hajjar, Dariush Salari
Summary: The aim of this study was to investigate green and sustainable chemistry approaches in current industrial processes, such as methanol to olefin (MTO) and hexane to olefin (HTO), in order to minimize environmental pollution. The synthesis of multifunctional catalysts for simultaneous use in both processes was studied, along with the effect of different metals on product strengthening. The investigation showed that propylene production efficiency in microchannels for HTO was higher than ideal value, indicating significant improvement for future sustainable technologies. Ga-ZM exhibited the best overall performance in both processes due to a high P/E ratio, and Ga was found to have a significant effect on increasing propylene in MTO.
Review
Chemistry, Multidisciplinary
Haoxiang Yu, Zhen Wang, Runtian Zheng, Lei Yan, Liyuan Zhang, Jie Shu
Summary: Due to the natural abundance and cost-effectiveness of iodine, metal-iodine batteries are competitive for high energy density and large power density energy storage systems. However, the inherent properties of iodine and issues like dendrite growth and metal corrosion pose challenges for rate performance, cyclability, and safety of metal-iodine batteries. This review summarizes the research progress of metal-iodine batteries, including the classification and design strategies of iodine electrodes, development and protection strategies for metal anodes, and comparison of key electrochemical parameters.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Engineering, Environmental
Ziying Lei, Yuzhi Chen, Yue Zhang, Madeline E. Cooke, Isabel R. Ledsky, N. Cazimir Armstrong, Nicole E. Olson, Zhenfa Zhang, Avram Gold, Jason D. Surratt, Andrew P. Ault
Summary: The study demonstrates that initial aerosol acidity plays a significant role in shaping the physicochemical properties of SOA formed from IEPDX, with higher acidity resulting in more organosulfate formation and a tendency for the organic phase to transition to a semi-solid or solid state. These findings can be used to improve model parameterizations of SOA formation and properties from IEPDX to better align predictions with atmospheric observations.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Article
Chemistry, Applied
Feng-Kang Shang, Yue-Hua Li, Zi-Rong Tang, Yi-Jun Xu
Summary: Utilizing photocatalytic technology to reduce water or carbon dioxide to solar fuels and to selectively or non-selectively oxidize organics to their respective target products, is a promising and sustainable way to increase the supply of energy and chemical feedstocks, reduce greenhouse gas emissions, and solve environmental pollution.
Article
Energy & Fuels
Gan Cheng, Yulong Li, Yijun Cao, Zhiguo Zhang
Summary: The presence of sulfur hinders the clean utilization of coking coal. Inorganic sulfur, mainly in the form of pyrite, contaminates clean coal during flotation, while organic sulfur can only be effectively removed chemically. Desulfurization using a combination of flotation and oxidation methods reduces inorganic sulfur more efficiently than organic sulfur. The sulfur and ash content in coal were reduced from 2.55% and 46.16% to 1.33% and 13.41%, respectively, through the flotation-oxidation method. However, the oxidation-flotation method led to the formation of Fe2O3 on pyrite surfaces and increased the presence of oxygen-containing functional groups, adsorption capacity of water molecules, and hydrophilicity. MD simulation supported the experimental results, showing a lower diffusion coefficient of water molecules on the surface of oxidized coal compared to raw coal. This reduced the hydrophobicity of coal and resulted in lower product recovery compared to the flotation-oxidation method.
Article
Chemistry, Organic
Bi Bali Judicael Tra, Abolle Abolle, Vincent Coeffard, Francois-Xavier Felpin
Summary: This paper presents a divergent continuous-flow approach for the biomimetic oxidative cyclization of reticuline-type alkaloids to aporphine and morphinandienone natural products using hypervalent iodine(III) reagents. The method allows for the selective synthesis of target products based on detailed knowledge of the reaction mechanisms, providing robust conditions for the preparation of natural products.
EUROPEAN JOURNAL OF ORGANIC CHEMISTRY
(2022)
Article
Chemistry, Organic
Julian Spils, Thomas Wirth, Boris J. Nachtsheim
Summary: We present a multi-step continuous-flow approach to produce six-membered diaryliodonium salts, with improved scalability and atom economy compared to existing batch methods. Benzyl acetates serve as readily available and cost-effective starting materials in this two-step procedure. An acid-catalyzed Friedel-Crafts alkylation followed by an anodic oxidative cyclization results in a defined set of cyclic iodonium salts, with yield depending on the substrate characteristics.
BEILSTEIN JOURNAL OF ORGANIC CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Kazunori Miyamoto, Motomichi Saito, Shunsuke Tsuji, Taisei Takagi, Motoo Shiro, Masanobu Uchiyama, Masahito Ochiai
Summary: The study successfully synthesized air/moisture-stable 3-bromanes using a BBX strategy for the first time. X-ray crystallography and spectroscopic analysis showed that the bromine(III) center is effectively stabilized through intramolecular hypervalent bonding.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2021)
Article
Chemistry, Multidisciplinary
Fangyuan Kang, Xin Wang, Cailing Chen, Chun-Sing Lee, Yu Han, Qichun Zhang
Summary: Developing diverse synthetic routes to prepare various crystalline covalent organic frameworks (COFs) and enriching the COFs family is crucial. In this research, the Kro''hnke oxidation method was used to construct two crystalline nitrone-linked COFs (CityU-1 and CityU-2) through the ingenious design of precursors and careful control of polymerization conditions. The as-obtained crystalline COFs were characterized and showed potential applications, such as high specific surface area and I-2 capture capacity.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Multidisciplinary
Muhammad Israr, Han Yong Bae
Summary: In this study, an efficient organocatalyst, tritylium tetrakis(pentafluorophenyl)borate ([Ph3C](+)[B(C6F5)(4)](-)), was used for cyanosilylation of ketones. The solid salt exhibited neutral, air- and moisture-tolerant properties, making it user-friendly. The catalyst showed excellent reactivity, allowing for the synthesis of highly pure cyanohydrin trimethylsilyl ethers without the use of solvents, temperature manipulation, or column chromatography.
Article
Chemistry, Multidisciplinary
Roberto Camposeco, Rodolfo Zanella
Summary: Bimetallic Au-Ir catalysts supported on gamma-Al2O3 showed outstanding synergistic performance in the propane oxidation reaction. The catalysts exhibited higher activity compared to their gold and iridium monometallic counterparts. Characterization results indicated strong interaction between gold and iridium particles and the thermal treatment atmosphere influenced the active sites. The bimetallic catalysts showed Lewis and Bronsted acidity and demonstrated high stability and reusability.
MATERIALS TODAY CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Remi Desmet, Celine Boidin-Wichlacz, Reda Mhidia, Aurelie Tasiemski, Vangelis Agouridas, Oleg Melnyk
Summary: One pillar of protein chemical synthesis is the selective desulfurization of cysteine residues into alanines, using ligation chemistries based on reactions involving phosphine as a sink for sulfur. This study demonstrates that cysteine desulfurization by a phosphine can be efficiently achieved using micromolar concentrations of iron under aerobic conditions in hydrogen carbonate buffer, reminiscent of iron-catalyzed oxidation phenomena occurring in natural waters. Therefore, this work highlights the potential of adapting chemical processes in aquatic systems for chemoselective transformations at the protein level, while minimizing the use of harmful chemicals.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Applied
Wajid Ali, Saroj K. Rout, Srimanta Guin, Anju Modi, Arghya Banerjee, Bhisma K. Patel
ADVANCED SYNTHESIS & CATALYSIS
(2015)
Article
Chemistry, Multidisciplinary
Arghya Banerjee, Sourav Kumar Santra, Nilufa Khatun, Wajid Ali, Bhisma K. Patel
CHEMICAL COMMUNICATIONS
(2015)
Article
Chemistry, Organic
Nilufa Khatun, Sourav Kumar Santra, Arghya Banerjee, Bhisma K. Patel
EUROPEAN JOURNAL OF ORGANIC CHEMISTRY
(2015)
Article
Chemistry, Organic
Anupal Gogoi, Srimanta Guin, Suresh Rajamanickam, Saroj Kumar Rout, Bhisma K. Patel
JOURNAL OF ORGANIC CHEMISTRY
(2015)
Article
Chemistry, Organic
Nilufa Khatun, Anju Modi, Wajid Ali, Bhisma K. Patel
JOURNAL OF ORGANIC CHEMISTRY
(2015)
Article
Chemistry, Organic
Ganesh Majji, Suresh Rajamanickam, Nilufa Khatun, Sourav Kumar Santra, Bhisma K. Patel
JOURNAL OF ORGANIC CHEMISTRY
(2015)
Article
Chemistry, Organic
Wajid Ali, Ahalya Behera, Srimanta Guin, Bhisma K. Patel
JOURNAL OF ORGANIC CHEMISTRY
(2015)
Article
Chemistry, Organic
Arghya Banerjee, Sourav Kumar Santra, Aniket Mishra, Nilufa Khatun, Bhisma K. Patel
ORGANIC & BIOMOLECULAR CHEMISTRY
(2015)
Article
Chemistry, Organic
Bappi Paul, Bishal Bhuyan, Debraj D. Purkayastha, Siddhartha S. Dhar, Bhisma K. Patel
TETRAHEDRON LETTERS
(2015)
Article
Chemistry, Inorganic & Nuclear
Harisadhan Ghosh, Ravishashidhar Vavilala, Alex M. Szpilman
TETRAHEDRON-ASYMMETRY
(2015)
Article
Chemistry, Multidisciplinary
Ahalya Behera, Wajid Ali, Srimanta Guin, Nilufa Khatun, Prakash R. Mohanta, Bhisma K. Patel
Article
Chemistry, Organic
Sourav Kumar Santra, Arghya Banerjee, Nilufa Khatun, Bhisma K. Patel
EUROPEAN JOURNAL OF ORGANIC CHEMISTRY
(2015)
Article
Chemistry, Inorganic & Nuclear
Bhaskar Jyoti Sarmah, Ankur Kanti Guha, Jayashree Nath, Lakshi Saikia
Article
Chemistry, Inorganic & Nuclear
Bhaskar Jyoti Sarmah, Jayashree Nath, Ankur Kanti Guha
Summary: The bridge-splitting reaction of [Rh(CO)2Cl]2 dimer with amino acid ester ligands leads to the formation of rhodium(I) dicarbonyl complexes [Rh(CO)2ClL](1a-g). These complexes undergo oxidative addition with CH3I to give five-coordinate Rh(III) complexes [Rh(CO)(COCH3)IClL](2a-g). The synthesized complexes 1 show a low activation barrier for oxidative addition with CH3I, as indicated by theoretical calculations.
JOURNAL OF COORDINATION CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Nilufa Khatun, Arghya Banerjee, Sourav Kumar Santra, Wajid Ali, Bhisma K. Patel
