Article
Chemistry, Physical
Graham J. Hutchings
Summary: Heterogeneous catalysis is essential in chemical and fuel industries, and understanding reaction mechanisms and improving catalyst design are crucial for the development of new catalysts. Advanced characterization techniques and high-level computational methods have played key roles in revealing reaction mechanisms.
FARADAY DISCUSSIONS
(2021)
Article
Chemistry, Multidisciplinary
Petr Vosahlo, Petr Stepnicka
Summary: Substituents were found to affect the properties of ferrocene acylphosphines, with the increasing donor ability of the substituents leading to higher basicity of the phosphine groups. Catalysts derived from acylphosphines with electron-donating aliphatic substituents showed the highest reaction yields in Au-catalysed alkyne hydration and intramolecular cyclisation reactions. The carbonyl moiety in the acylphosphines appeared to reduce steric crowding around the phosphorus atom and counterbalanced the electron-donating effect of the ferrocenyl moiety.
NEW JOURNAL OF CHEMISTRY
(2023)
Review
Chemistry, Physical
Pravya P. Nair, Rose Mary Philip, Gopinathan Anilkumar
Summary: The importance of fluorine in the pharmaceutical and agrochemical industry has led to increased attention on methods to introduce fluorine into compounds. Nickel catalysts have shown promising applications in introducing various fluorinated functionalities, and this review comprehensively covers the strategies and mechanistic analyses involved in nickel-catalysed fluoromethylation reactions up to 2021.
CATALYSIS SCIENCE & TECHNOLOGY
(2021)
Article
Chemistry, Multidisciplinary
Zhenghong Zhou, Jimin Yang, Bo Yang, Yang Han, Lijuan Zhu, Xiao-Song Xue, Feng Zhu
Summary: This study presents a pioneering example of nickel-catalysed enantioconvergent Stille cross-coupling reactions. The reactions result in the formation of C-C bonds in good to high yields with excellent stereoselectivity, providing a practical and cost-effective method for synthesis. The innovative use of synergistic photoredox/nickel catalysis enables a novel single-electron transmetalation process, opening up new research possibilities in the field of Stille reactions.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Multidisciplinary
Anze Zupanc, Eeva Heliovaara, Karina Moslova, Aleksi Eronen, Marianna Kemell, Marjan Jereb, Timo Repo
Summary: This article describes a simple, inexpensive, and environmentally friendly method for dissolving gold which uses 2-mercaptoben-zimidazole as a ligand and a catalytic amount of iodine in ethanol. This method has the potential to open a new pathway for more sustainable metal recycling.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Multidisciplinary
Pawan S. Dhote, Swapnil V. Halnor, Chepuri V. Ramana
Summary: The article discusses the gold-catalysed intramolecular redox cyclization of o-alkynylnitrobenzens, highlighting its importance and potential for further research in metal catalysis. It also touches upon the idea of generating alpha-oxo gold carbenes via oxygen transfer to alkynes, establishing another significant aspect in gold catalysis.
Review
Chemistry, Multidisciplinary
Ryan G. Epton, William P. Unsworth, Jason M. Lynam
Summary: This review focuses on the application of density functional theory (DFT) in gold(I) catalysis, specifically discussing the importance of considering anions in calculations and the necessity of benchmarking computational results against experimental data for accurate modeling.
ISRAEL JOURNAL OF CHEMISTRY
(2022)
Review
Chemistry, Multidisciplinary
Susana Estopina-Duran, James E. Taylor
Summary: This review outlines recent advances in Bronsted acid-catalysed dehydrative substitution reactions for C-C, C-O, C-N and C-S bond formation. It highlights the wide range of processes accessible using simple alcohols as the formal electrophile, while discussing current limitations and possible future research directions.
CHEMISTRY-A EUROPEAN JOURNAL
(2021)
Article
Chemistry, Multidisciplinary
Quoc Hoang Pham, Andrew J. Tague, Christopher Richardson, Christopher J. T. Hyland, Stephen G. Pyne
Summary: The Pd-catalysed asymmetric allylic alkylation of prochiral enamide anions derived from 5H-oxathiazole 2,2-dioxides has been developed, leading to the synthesis of high-value allylated heterocyclic products with high regioselectivity and generally high enantioselectivity. The conversion between N- and C-allyl products was observed, with N-allylated products eventually converting to C-allylated products over time.
Article
Chemistry, Multidisciplinary
Iveta Vilimova, Igor Chourpa, Stephanie David, Martin Souce, Katel Herve-Aubert
Summary: This study proposes a rapid and efficient protocol for the generation of magnetic nanoprobes to capture miR-155, aiming to increase its concentration. The nanoprobes were formulated by functionalizing the surface of superparamagnetic iron oxide nanoparticles with a miR sequence complementary to the target miR-155. The affinity of the nanoprobes to the target miR was demonstrated, and their stability after incubation in serum was confirmed.
Article
Chemistry, Organic
Pattamabhorn Worsawat, Pakin Noppawan, Charlotte Croise, Nontipa Supanchaiyamat, Con R. R. McElroy, Andrew J. J. Hunt
Summary: Highly effective acid-catalysed reactions of amines with dimethyl carbonate (DMC) have been achieved, yielding carboxymethylation or methylation products with significant yields and selectivity. Various acid catalysts, including Lewis acids, Bronsted acids, and acids supported on silica, have demonstrated successful carboxymethylation reactions of primary aliphatic amines. Lewis acid FeCl3 has been found to promote carboxymethylation of primary aromatic amines and secondary amines as well. Furthermore, silica-supported catalysts, such as silica sulfuric acid and silica perchlorate, have shown enhanced carboxymethylation of primary aliphatic amines at elevated temperature and pressure.
ORGANIC & BIOMOLECULAR CHEMISTRY
(2023)
Review
Chemistry, Inorganic & Nuclear
Angus Olding, Meiqiong Tang, Curtis C. Ho, Rebecca O. Fuller, Alex C. Bissember
Summary: This Perspective discusses the importance of homogeneous rhenium catalysis in chemical synthesis, highlighting the reactivity of different oxidation state rhenium catalysts in carbon-carbon bond-forming reactions, transposition/isomerization of allyl alcohols, and reductions of imines and carbonyls.
DALTON TRANSACTIONS
(2022)
Article
Chemistry, Multidisciplinary
Siddique Khan, Beeraiah Baire
Summary: This review discusses the synthetic developments in Fe-catalysis over the past 13 years, focusing on the coupling of alkynes and alcohols to form bonds. These strategies adhere to Green Chemistry principles and are predicted to lead to the development of numerous new iron-catalyzed reactions in the future.
Article
Chemistry, Physical
Yunyan Zhang, H. Aruni Fonseka, Hui Yang, Xuezhe Yu, Pamela Jurczak, Suguo Huo, Ana M. Sanchez, Huiyun Liu
Summary: Embedding quantum dots on nanowire sidewalls enhances light emission/absorption, but the curved surface of nanowires makes growth challenging. The {110} sidewall facets of self-catalyzed nanowires favor 2D growth, making 3D growth difficult. In this study, a novel thermally-driven growth method was developed, which allows defect-free growth of lattice-matched Ge dots on the sidewall facets of thin self-catalyzed GaAs nanowires without surfactant or surface treatment. This method opens up new possibilities for integrating quantum dots on nanowires and enables growth in materials systems where traditional mechanisms are not possible.
NANOSCALE HORIZONS
(2022)
Review
Chemistry, Physical
Animesh Acharjee, Atanu Rakshit, Suman Chowdhury, Bidyut Saha
Summary: Micellar mediated organic reactions are important for converting reactions from 'on water' to 'in water' type. They provide true alternatives to toxic solvents while catalyzing various organic reactions in water.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
