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Regioselective Ring Opening of Epoxide with Alcohols: A Selective Route to α‐Alkylated Ketones and β‐Alkylated Secondary Alcohols ChemCatChem (IF 4.5) Pub Date : 2024-04-17 Sabuj Kundu, Srabani Nandi, Ishani Borthakur, Adarsha Mandal
Herein, we demonstrated an effective protocol for the regioselective ring opening of epoxides with alcohols. By following this strategy, both α‐alkylated ketones and β‐alkylated secondary alcohols were selectively obtained by changing the reaction parameters. Compared to the previously reported protocols, this methodology was operated using considerably lower base at lower temperature. Notably, a wide
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Artificial Metalloenzyme Catalyzed Enantioselective Carboamination of Alkenes ChemCatChem (IF 4.5) Pub Date : 2024-04-17 Kun Yu, Ryo Tachibana, Corentin Rumo, Nico V. Igareta, Kailin Zhang, Thomas R. Ward
Relying on ubiquitous alkenes, carboamination reactions enable the difunctionalization of the double bond by the concurrent formation of a C–N and a C–C single bond. In the past years, several groups have reported on elegant strategies for the carboamination of alkenes relying on homogeneous catalysts or enzymes. Herein, we report on an artificial metalloenzyme for the enantioselective carboamination
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Tuning the Microenvironment of Co‐N4 in Co Single‐Atom Catalysts for Electrocatalytic CO2 Reduction ChemCatChem (IF 4.5) Pub Date : 2024-04-17 Zizhen Zeng, Junli Xu, Jiwei Li, Congcong Du, Yifei Sun, Haifeng Xiong
Single‐atom catalysts (SACs), with their well‐defined structure, serve as an efficient catalyst model for studying the structure‐performance relation in the electrocatalytic CO2 reduction reaction (CO2RR). Current CO2RR research primarily focus on the coordination interactions between metal single atoms and coordinated ligands, while the impact of the metal SAC's microenvironment remains largely unexplored
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An Air and Moisture Stable Boat Shaped Hydroxo‐Bridged Ruthenium(II) Binuclear Complex for the Catalytic Hydrogenation of CO2 ChemCatChem (IF 4.5) Pub Date : 2024-04-16 Uttam Kumar Das, Graham John Tizzard, Simon J. Coles, Gareth Richard Owen
A new hydroxo‐bridged ruthenium (II) complex [{Ru(ƞ6‐p‐cymene)(iPr2P‒O)}2(µ‐OH)]Cl (2) has fortuitously been isolated from the reaction between the known ruthenium(II) complex [RuCl2(ƞ6‐p‐cymene)(iPr2P‐OH)] (1) in either CDCl3 or CHCl3 solutions in the presence of excess DBU (1,8‐diazabicyclo(5.4.0)undec‐7‐ene) at room temperature. Complex 2 is only formed under specific conditions as an orange‐colored
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Addressing the Activity and Selectivity Challenges for CO2 Reduction via Transition‐metal‐free Homo‐ and Hetero‐biatomic Catalysts Embedded in Two‐dimensional Networks ChemCatChem (IF 4.5) Pub Date : 2024-04-15 Afshana Hassan, Manzoor Ahmad Dar
Synergistic interactions between the atoms in double atom catalysts has emerged as a promising tool to tune and boost CO2 activation and reduction. In this work, we systematically designed highly stable transition‐metal‐free homo‐ and hetero‐biatomic catalysts based on Al, Be, B and Si supported on TCNQ monolayer for CO2 reduction to C1 products using dispersion corrected periodic density functional
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Transient in situ DRIFTS investigation of CO2 hydrogenation to methanol over unsupported CuGa catalysts ChemCatChem (IF 4.5) Pub Date : 2024-04-15 Shuanglin Zhang, Yan Shao, Huanhao Chen, Xiaolei Fan
Gallium oxide‐based catalysts are promising candidates for CO2 hydrogenation to methanol, whilst mechanistic understanding of the catalytic systems is not yet fully understood. Here, transient in situ diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) studies of CO2 hydrogenation over the unsupported CuGa and CuGaN (with N doping) catalysts were conducted. The findings show that N
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Ionic Liquid‐Silver Catalysts For Acetylene Acetoxylation At Tow‐Temperature ChemCatChem (IF 4.5) Pub Date : 2024-04-15 Qi Zhuang, Xunchao Zhang, Mingyuan Zhu, Bin Dai
It was crucial to develop a catalyst with high catalytic activity at iow temperatures, as the zinc‐based catalysts were prone to deactivation in the high‐temperature reaction of acetylene acetoxylation, and ionic liquid (IL)‐silver (Ag) catalysts were synthesized and applied in acetylene acetoxylation. The X‐ray diffraction, transmission electron microscopy, and X‐ray photoelectron spectroscopy characterizations
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Microkinetic Model as a Crucial Tool for Understanding Homogeneous Catalysis ChemCatChem (IF 4.5) Pub Date : 2024-04-12 Raquel J. Rama, Ainara Nova, M. Carmen Nicasio
Microkinetic modeling is a computational tool that allows simulating the evolution of the concentration of catalytically relevant species with time, providing a description of the catalytic system closer to the experimental. Microkinetic models have been mainly applied in organometallic catalysis as a means for validating mechanistic proposals by comparing experimental and computed rates and concentrations
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Highly Stereoselective Synthesis of 1,3‐Enynes via Aryl to Vinyl 1,4‐Palladium Migration/Sonogashira Coupling Sequence ChemCatChem (IF 4.5) Pub Date : 2024-04-12 Zheng-Yu Chen, Xiao-Ming Ji, Xue Wang, Motahareh Asgari, Jian-Guo Fu, Shu-Sheng Zhang, Chen-Guo Feng
Alkynylation of alkenyl bromoarenes via aryl to vinyl 1,4palladium migration/copper‐free Sonogashira coupling sequence has been developed. This approach provides a facile methodology for the highly stereoselective synthesis of multi‐substituted 1,3‐enynes in good to excellent yields and regioselectivities.
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Stereoselective reactions promoted by alkali metal salts of phosphoric acid organocatalysts ChemCatChem (IF 4.5) Pub Date : 2024-04-12 Emanuele Cocco, Achille Antenucci, Armando Carlone, Paola Manini, Fabio Pesciaioli, Stefano Dughera
The catalytic application of chiral phosphoric acids (CPAs) from 2004 to date represents a true milestone for asymmetric organocatalysis. However, not only the free acids can be conveniently employed in numerous different asymmetric synthetic methodologies, thus being strictly compliant to the concept of “organocatalysis”, but also their metal salts. This review focuses on asymmetric reactions in which
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Integrated carbon dioxide capture and utilization for the production of CH4, syngas and olefins over dual‐function materials ChemCatChem (IF 4.5) Pub Date : 2024-04-12 Juanting Li, Xu He, Rongrong Hu
The massive emission of carbon dioxide produces the greenhouse effect and poses a threat to the survival of modern civilization. The search for new carbon management strategies has been at the forefront of scientific research over the past few decades. Integrated carbon dioxide capture and utilization (ICCU), which aims to capture CO2 and convert it in situ into high value‐added products or fuels,
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Photogeneration of Hydrogen: Insights from a Pt(II)‐Complex Incorporated into a Covalent Organic Framework ChemCatChem (IF 4.5) Pub Date : 2024-04-11 Thomas Gobbato, Marina Sicignano, Biagio Di Vizio, Federico De Biasi, Daniele Rosa-Gastaldo, Alessandro Bonetto, Paolo Costa
Pt(II)‐based molecular catalysts stand as a prototypical system in hydrogen evolution reactions (HER) owing to their consistently elevated activity levels. Their integration into heterogeneous systems thus provides an ideal platform to develop catalytic materials with optimal atom economy. In this work, by rational molecular design, we have synthesized a novel two‐dimensional photoactive Covalent Organic
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Improving Oxidative Catalytic Efficiency for Fuels Desulfurization Using Hybrid Materials Based in MOF‐808@SBA‐15 ChemCatChem (IF 4.5) Pub Date : 2024-04-11 Simone Fernandes, Pedro Leo, Isabel Santos-Vieira, Baltazar Castro, Luís Cunha-Silva, Salete Silva Balula
This work unveils a route for a new generation of heterogeneous polyoxometalate (POMs) based catalysts associated to the preparation of hybrid materials as a triad of POMs, mesoporous silica (SBA‐15) and microporous MOF structures (MOF‐808). The prepared catalyst, PMo12@MOF‐808@SBA‐15, with the main active center the phosphomolybdic acid (PMo12), was successfully applied for the desulfurization of
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Impact of ceria support morphology on Au single‐atom catalysts for benzyl alcohol selective oxidation ChemCatChem (IF 4.5) Pub Date : 2024-04-11 Xinyue Zhou, Aristarchos Mavridis, Mark A. Isaacs, Charalampos Drivas, Carmine D’Agostino, Christopher M. A. Parlett
Alcohol oxidations are a key industrial chemical transformation, with aldehydes and ketones finding use in an array of applications. Nobel metals are known for their activity towards this chemoselective transformation, however, sustainable catalyst synthesis requires optimal utilisation of these scarce elements. Here, we report Au catalytic systems based on the deposition of isolated Au sites on different
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Molecular Dyad vs Multi‐component Approach – Photocatalytic Hydrogen Evolution by Combining Oligothiophene Photosensitizers with [FeFe]‐hydrogenase Mimics ChemCatChem (IF 4.5) Pub Date : 2024-04-11 Chizuru Kasahara, Katharina Rediger, Mathias Micheel, Phil Liebing, Stefanie Gräfe, Stephan Kupfer, Maria Wächtler, Wolfgang Weigand
A molecular dyad (PS‐CAT) consisting of a metal‐free photosensitiser (PS) and a [FeFe]‐hydrogenase‐inspired [Fe2S2] cluster (CAT) has been synthesized for hydrogen evolution under visible light irradiation. The electrochemical properties of PS‐CAT in the absence and presence of acid were investigated by CV and IR‐SEC. The ground state and excited state photophysical properties of PS and PS‐CAT, and
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Oxide Solid‐Solution Catalysts with Good Redox Properties for Liquid Phase Reactions: A Review ChemCatChem (IF 4.5) Pub Date : 2024-04-11 Shohei Tada, Masaru Kondo, Tatsuya Joutsuka
In this review, we discuss liquid‐phase redox reactions using oxide solid‐solution catalysts. These oxide solid solutions are readily prepared by introducing various elements into the foundational metal oxide template. Doping with metal species leads to the formation of [MOx] clusters with unique coordination structures, which is a remarkable feature that deserves attention. Consequently, oxide solid
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Novel Alkane Dehydrogenation Routes via Tailored Catalysts ChemCatChem (IF 4.5) Pub Date : 2024-04-11 Xueya Dai, Wei Qi
Alkane dehydrogenation to alkene represents a promising alternative route for conventional petroleum cracking processes heavily reliant on fossil resources. This Concept outlines the latest advancements of novel alkane dehydrogenation routes that offer potential solutions to intrinsic problems existing in routine direct dehydrogenation or oxidative dehydrogenation reactions, including CO2 assisted
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Advances in the Homogeneously Catalyzed Hydrogen Production from Biomass Derived Feedstocks: a Review. ChemCatChem (IF 4.5) Pub Date : 2024-04-10 Andrea Fasolini, Giulia Martelli, Andrea Piazzi, Massimiliano Curcio, Jacopo De Maron, Francesco Basile, Rita Mazzoni
Biomass‐derived feedstocks for hydrogen production are crucial as an alternative to fossil fuel especially in those areas where green electricity and clean water are scarce. In this framework the transformation of simple (formic acid, alcohols) and more complex (polyalcohols, sugars and cellulose) bio‐derivatives in pure hydrogen is recognized as a promising approach. Parallel to great effort in heterogeneous
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Effect of Ag addition to Au Catalysts for the Oxidation of 5‐Hydroxymethylfurfural to 2,5‐Furandicarboxylic Acid ChemCatChem (IF 4.5) Pub Date : 2024-04-10 Ewoud J.J. de Boed, Hidde L. Nolten, Nazila Masoud, Robin Vogel, Fei Wang, Zhuoran Xu, Eric J. Doskocil, Baira Donoeva, Petra E. de Jongh
The addition of Ag to Au nanocatalysts is known to improve several catalytic reduction and oxidation reactions. Until now, bimetallic AuAg catalysts have not been studied in detail in liquid phase oxidation reactions. We investigated the activity, selectivity, and stability of silica supported Au, Ag and AuAg catalysts in the oxidation of 5‐hydroxymethylfurfural (HMF) to 2,5‐furandicarboxylic acid
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Influence of Ylide Functionalization on the Catalytic Performance of Ferrocenyldiphosphines in Au(I)‐Catalyzed Hydroaminations and Hydrohydrazinations ChemCatChem (IF 4.5) Pub Date : 2024-04-10 Prakash Duari, Abir Sarbajna, Cheng-Han Yu, V. S. V. S. N. Swamy, Kai-Stephan Feichtner, Jens Handelmann, Viktoria H. Gessner
Ylide‐functionalized phosphines (YPhos) have been shown to yield highly active gold catalysts owing to their high donor capacity. To examine the impact of ylide functionalization on a given ligand structure, a series of ferrocenyl diphosphines functionalized with no, one or two ylide moieties and their corresponding bimetallic gold complexes were prepared. The complexes feature an anti‐conformation
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In‐situ investigations of polyoxometalate‐catalysed biomass oxidation to formic acid using multinuclear high‐resolution FlowNMR Spectroscopy ChemCatChem (IF 4.5) Pub Date : 2024-04-10 Jan-Dominik H. Krueger, Maximilian J. Poller, Catherine Lyall, John Lowe, Ulrich Hintermair, Jakob Albert
Biomass valorisation over polyoxometalate‐based (POM) catalysts is a promising strategy for green and sustainable chemistry. In order to further improve such processes e.g. by using different additives, a better understanding of the chemical influence of various additives on the catalyst is paramount. The main objective of this study is to gain a deeper understanding of the effects caused by various
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Front Cover: Insights into the Structural Evolution Process of Na/ZnFe2O4 Spinel Catalyst in CO2 Hydrogenation (ChemCatChem 7/2024) ChemCatChem (IF 4.5) Pub Date : 2024-04-10 Xiaoqian Gong, Yi Liu, Ruonan He, Xiaoying Xu, Zhihua Han, Jingyun Chen, Bo Feng, Zhou‐jun Wang, Aihua Xing
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Cover Feature: Influence of Charge Delocalization on Manganese Catalyzed Transfer Hydrogenation (ChemCatChem 7/2024) ChemCatChem (IF 4.5) Pub Date : 2024-04-10 Fabian Wiedemaier, Christa Hofer, Ferdinand Belaj, Nadia C. Mösch‐Zanetti
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P and O Co‐Doped Pt‐Co Octahedral Nanocrystals as Highly Active and Stable Electrocatalysts for Oxygen Reduction Reaction ChemCatChem (IF 4.5) Pub Date : 2024-04-08 Si-Yi Tian, Sheng-Nan Hu, Jun-Fei Shen, Na Tian, Wei-Cheng Xu, Shuang-Li Yang, Meng-Ying Li, Yan-Qi Jin, Su-Min Chen, Ming-Shu Chen, Zhi-You Zhou, Shi-Gang Sun
The development of high active and stable Pt‐M (M = transition metals) electrocatalysts for oxygen reduction reaction (ORR) is crucial for the commercialization of proton exchange membrane fuel cells (PEMFCs). The main challenge of Pt‐M electrocatalysts is their instability, mainly due to the leaching of M. In this study, we report the design of P and O co‐doped octahedral PtCo alloy on Ketjen carbon
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Thermally Induced Structure and Functionality Evolution of a Pt‐based Lean NOx Trap Catalyst ChemCatChem (IF 4.5) Pub Date : 2024-04-08 Dezhi Ren, Chengxiong Wang, Dongxia Yang, Yinglong Wu, Feng Feng, Junchen Du, Fei Yu, Jingfang Zhu, Yunkun Zhao
Applying a NOx trap catalyst to effectively remove NOx contaminants from the oxygen‐rich exhaust is still very challenging, due to the lack of use guidance based on deactivation mechanisms. The temperature‐dependent Pt sintering rate constant was described using Pt dispersion determined by pulse CO chemisorption. It was found that 700‐850 ºC was the determining temperature regions for the significant
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Molecular electrocatalysis under finite diffusive mass transport conditions. An analytical approach ChemCatChem (IF 4.5) Pub Date : 2024-04-08 Antonio J Martinez-Garcia, Jose Victor Hernandez-Tovar, Joaquin Gonzalez
Molecular electrocatalysis has emerged as a crucial branch of molecular electrochemistry, finding applications across various fields such as energy generation, electroanalysis, and electrosynthesis. In recent years, the study of these processes within confined spatial domains, has been increasingly frequent. However, a significant gap exists in the theoretical understanding of the interplay between
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Cobalt/Photoredox Cooperative Catalysis‐Enabled Cycloaddition Reactions of 1,6‐Diyne Derivatives ChemCatChem (IF 4.5) Pub Date : 2024-04-08 Takeshi Yasui, Yoshihiko Yamamoto
Cobalt catalysts have recently gained considerable attention as alternatives to catalysts based on precious transition metals such as Rh and Ir. Recently, Co/photoredox cooperative catalysis has emerged as a powerful tool that enables versatile transformations, including cycloaddition reactions of unsaturated compounds. In particular, 1,6‐diyne derivatives are fascinating substrates for these reactions
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Construction of DBU‐Based Poly(ionic liquid)s for the Conversion of CO2, Glycerol, and Propylene Oxide into Glycerol Carbonate ChemCatChem (IF 4.5) Pub Date : 2024-04-08 Cong Luo, Haoru Tang, Houfang Lu, Kejing Wu, Yingying Liu, Yingming Zhu, Binshen Wang, Bin Liang
The development of efficient heterogeneous catalysts for upgrading CO2, a greenhouse gas, and glycerol (Gly), an untapped biomass resource, into glycerol carbonate (GC) remains a challenge. Herein, 1,8‐diazabicyclo[5.4.0]undec‐7‐ene (DBU)‐based poly(ionic liquid)s (PILs) were constructed for the one‐pot synthesis of GC from CO2, Gly, and propylene oxide. Among them, P‐DVB‐DBUVBI‐1 exhibited the best
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Covalent Organic Frameworks for the Oxygen Reduction Reaction: Designing Strategies ChemCatChem (IF 4.5) Pub Date : 2024-04-08 Shuai Yang, Xuewen Li, Shiyuan Fei, Qing Xu, Zheng Jiang
Covalent organic frameworks (COFs) are an emerging crystalline polymer that constructed by the organic blocks through reversible polymerization. In this review, we have summarized the strategies for designing covalent organic frameworks for the oxygen reduction reaction. The discussion involved with the new structural designing of COFs and modifications fitting to applicated. Actvie sites manipulted
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Tri‐reforming of methane over a hydroxyapatite supported nickel catalyst ChemCatChem (IF 4.5) Pub Date : 2024-04-08 Thanh Son Phan, Pham Minh Doan
For the first time, a catalyst containing 5wt.% Ni supported on a hydroxyapatite support (HAP) has been synthesized and evaluated in tri‐reforming of methane (TRM) for synthetic gas (syngas) production. Nickel nanoparticles could be easily formed on HAP surface by using the conventional incipient wetness impregnation technique. In TRM, under unfavorable reaction conditions from the thermodynamic point
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Uniformly Distributed Palladium Nanoparticles on NH2‐MIL‐53 Fabricated by an Equilibrium Adsorption Method for Reduction of Nitrite in Water ChemCatChem (IF 4.5) Pub Date : 2024-04-08 Yuan Huang, Wontae Kim, Ryoichi Otomo, Shuhei Shimoda, Kevin C.-W. Wu, Yuichi Kamiya
Metal particle on a support material should be small and homogeneous in size, which is desirable when using it as a catalyst. In this study, we investigated to introduce Pd nanoparticles (NPs) with narrow size distribution into NH2‐MIL‐53, which was prepared by the reaction of aluminum(III) nitrate with 2‐aminoterephthalic acid. Only by immersing it in an aqueous PdCl2 solution, followed by the reduction
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Prospects in Sustainable Hydrosilylation by Biphase Catalysis ChemCatChem (IF 4.5) Pub Date : 2024-04-05 Irina K. Goncharova, Irina P. Beletskaya, Ashot Arzumanyan
This concept addresses the main economic, environmental, scientific and technological issues associated with the use of homogeneous Pt‐catalysts in the important industrial hydrosilylation process. The development of biphase catalysis is proposed as the most promising approach. One solution we suggest is the use of ethylene glycol (EG) as a medium in biphase catalysis. We have previously shown that
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One‐Pot Synthesis of Carbon‐Supported Pd Nanoparticles with Ni and Carbon Matrix Protection for Durable Alkaline Hydrogen Oxidation Reaction ChemCatChem (IF 4.5) Pub Date : 2024-04-05 Huong Doan, Ricardo Sgarbi, Quentin Labarde, Vincent Martin, Marian Chatenet
Protecting nanoparticles with a carbon matrix can enhance the durability of the catalysts in alkaline fuel cells (AFC) and is well‐documented. While others have tried complex syntheses to produce small nanoparticle catalysts, in this work, in order to scale‐up batches of 15 g or more, carbon‐cap (or carbon‐coating) protected Vulcan XC72‐supported Pd‐Ni (1‐2) nanoparticles (Pd‐Niacc/C) were successfully
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Integrated Electrolytic Hydrogen Production for Boosting Energy Utilization ChemCatChem (IF 4.5) Pub Date : 2024-04-04 Xin Yu Zhang, Shi Meng Hu, Hao Guan Xu, Hua Gui Yang, Peng Fei Liu
Electrocatalytic water splitting, powered by clean energy sources, represents a sustainable method for hydrogen (H2) production. Although extensive research has concentrated on performance indicators like current density and faradaic efficiency, the widespread adoption of electrocatalytic water splitting encounters challenges primarily due to high cell voltages and electricity costs. These issues stem
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Catalytic Asymmetric Approach to 1,3,4,5‐Tetrahydro‐1,4‐benzodiazepin‐2‐ones in One‐Pot ChemCatChem (IF 4.5) Pub Date : 2024-04-03 Vincenzo Battaglia, Sara Meninno, Armando Astone, Alessandra Lattanzi
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Synthesis, Characterization and Reactivity Studies of Cobalt(III) Porphyrin‐Iodosylarene Adduct and Cobalt(III) Porphyrin p‐Cation Radical Species ChemCatChem (IF 4.5) Pub Date : 2024-04-03 Wenwen Fu, Shoujun Wang, Yuheng Zhang, Minghao Xu, Dongru Sun, Wonwoo Nam, Yong Wang, Mian Guo
Biomimetic metalloporphyrin complexes have been employed in a number of catalytic oxidation reactions by utilizing terminal oxidants such as iodosylarenes (ArIO). Although high‐valent metal‐oxo species have been considered as the reactive intermediates, their precursors, metal‐iodosylarene adduct species, also exhibit intriguing oxidation capability under certain conditions. However, late transition
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A Non‐Macrocycle Thiolate‐Based Cobalt Catalyst for Selective O2 Reduction into H2O ChemCatChem (IF 4.5) Pub Date : 2024-04-03 Lili Sun, Javier Gutierrez, Alan Le Goff, David Gatineau, Timothy A. Jackson, Marcello Gennari, Carole Duboc
The reduction of dioxygen to produce selectively H2O2 or H2O is crucial in various fields. While platinum‐based materials excel in 4H+/4e‐ oxygen reduction reaction (ORR) catalysis, cost and resource limitations drive the search for cost‐effective and abundant transition metal catalysts. It is thus of great importance to understand how the selectivity and efficiency of 3d‐metal ORR catalysts can be
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A Versatile Electrochemical Cell for Operando XAS ChemCatChem (IF 4.5) Pub Date : 2024-04-03 Lars Ostervold, Adam S. Hoffman, David Thompson, Simon R Bare, Ezra Lee Clark
In situ and operando X‐ray absorption spectroscopy (XAS) provides fundamental insight into the working principles of electrocatalysts and is an important tool for future catalyst development. However, the design of an operando XAS electrocatalytic cell is not facile, and researchers designing cells, whether new cells or modifications to previous cells, often spend many hours on cell design before obtaining
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Synergistic One‐pot Tandem Combination of Cu and Proline Catalysis: Stereodivergent Synthesis of Chiral Aldols from Primary Alcohols ChemCatChem (IF 4.5) Pub Date : 2024-04-03 Marcos López-Aguilar, Marina Ramos-Martín, Nicolás Ríos-Lombardía, Luciana Cicco, Joaquin García-Álvarez, Carmen Concellón, Vicente del Amo
A new stereodivergent one‐pot tandem protocol, which granted diastereo‐ and enantioselective access to chiral aldols by starting from simple primary alcohols, is presented as a proof‐of‐concept. The synergistic combination of a chemoselective Cu(II)‐catalyzed oxidation of primary alcohols into the corresponding aldehydes (without the expected overoxidation into the corresponding carboxylic acids and
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Magnetically Reusable Carbon Nanotube Coated Co‐based Catalysts towards Highly Efficient Transfer Hydrogenation of Nitroarenes ChemCatChem (IF 4.5) Pub Date : 2024-04-03 Zongyan Ma, Jing Chen, Ming Chen, Linkun Dong, Weiwen Mao, Yu Long, Jiantai Ma
Development of efficient and stable non‐noble metal catalysts applied to the catalytic transfer hydrogenation of nitroarenes under mild conditions is still challenging. Herein, we report magnetically recyclable catalysts prepared via simple two‐stage pyrolysis of Co‐MOF‐74 and melamine composites. The optimized catalyst Co@C/CNTs‐10‐700 shows excellent conversion and selectivity towards transfer hydrogenation
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Concepts of ethylene carbonylation with hydrogen gas and in‐situ generated hydrogen ChemCatChem (IF 4.5) Pub Date : 2024-04-03 Yinpan Zhang, Qiang Guo, Feng Wang
The carbonylation reaction of olefins is one of the significant pathways for the synthesis of oxygen‐containing compounds such as aldehydes, esters, and amides. The ethylene carbonylation reactions have drawn much interest since they produce important chemicals such as propionaldehyde and methyl propionate, which are crucial intermediates for the synthesis of polymers. Moreover, ethylene carbonylation
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Cobalt‐Catalyzed Wacker‐type Aerobic Oxidation of Olefins into Ketones Enabled by PMHS: Giving Value to a Chemical Waste with Optimal Atom‐Economy ChemCatChem (IF 4.5) Pub Date : 2024-04-02 Naba Abuhafez, Rafael Gramage-Doria
Herein, it is demonstrated that a chemical waste from the silicon industry, namely polymethylhydrosiloxane (PMHS), is a suitable hydrosilane source for the challenging, selective aerobic oxidation of olefins into methyl ketones under cobalt catalysis: a first row, abundant in the Earth’s crust and cheap metal with low toxicity. The catalytic system operates under unprecedented, stoichiometric amounts
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Modified Halloysite as Catalyst for the Conversion of Hydroxymethylfurfural to Furandicarboxylic Acid: A DFT Investigation ChemCatChem (IF 4.5) Pub Date : 2024-04-02 Marco Bertini, Francesco Ferrante, Ludovico Guercio, Lorenzo Lisuzzo, Dario Duca
The reaction steps involved in the 5‐hydroxymethylfurfural to 2,5‐furandicarboxylic acid conversion by means of H2O2 were investigated employing a dedicated computational protocol based on density functional theory. The catalytic environment of choice was a molecular model representing a portion of the halloysite nanotube outer surface, functionalized by an organosilane, the 3‐aminopropyltriethoxysilane
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Recent Progress in Hollow Fiber Gas Diffusion Electrodes for CO2 Electroreduction ChemCatChem (IF 4.5) Pub Date : 2024-04-02 Yuanlin Gao, Xiaoyue Tu, Xiangjian Liu, Yu Zhang, Minghua Huang, Jiawei Zhu, Heqing Jiang
CO2 electroreduction (CO2RR) to high‐value chemicals by renewable energy is a promising route for achieving carbon cycling. Traditional two‐dimensional planar electrodes applied in CO2RR are faced with problems of high mass transfer resistance, carbonate precipitation, flooding, and complicated structures, seriously limiting their CO2RR efficiency and application. Three‐dimensional hollow fiber gas
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On the Mechanism of the Lysosomal Enzyme Iduronate‐2‐Sulfatase. A Multiscale approach ChemCatChem (IF 4.5) Pub Date : 2024-04-02 Mario Prejanò, Isabella Romeo, Cristina Talerico, Angela Parise, Nino Russo, Tiziana Marino
IIduronate‐2‐sulfatase (IDS) is a Ca2+‐dependent enzyme belonging to the family of sulfatases that catalyzes the hydrolysis of sulphurylated glycosaminoglycans (GAGs), like dermatan and heparan sulphate. Its deficiency or modification leads to the accumulation of GAGs in the human body and to the occurrence of severe conditions, such as Hunter’s disease, or Mucopolysaccharidosis type II. Due to its
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NiFe Catalysts for Oxygen Evolution Reaction: Is There an Optimal Thickness for Generating a Dynamically Stable Active Interface? ChemCatChem (IF 4.5) Pub Date : 2024-04-01 Luca Ciambriello, Ivano Alessandri, Luca Gavioli, Irene Vassalini
Here we investigated the dynamics of OER activity of NiFe (90/10) catalysts over 1000 potential sweep cycles as a function of their mass loading. Over twenty different films with mass loading in the 10 ng/cm2‐30 μg/cm2 range were deposited by Supersonic Cluster Beam Deposition (SCBD), allowing to study the progress of OER in sub‐monolayer, monolayer and multilayer regimes. Upon prolonged potential
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Solvent Effects on Heterogeneous Catalysis for Selective Hydrogenation ChemCatChem (IF 4.5) Pub Date : 2024-04-01 Jinlei Li, Yongjie Xi, Yan Qiao, Zelun Zhao, Jianhua Liu, Fuwei Li
Solvent effects add a new dimension for tuning the activity and selectivity of heterogeneous catalytic reactions, which is extensively employed in the hydrogenation of unsaturated compounds with multiple functional groups. In this concept, we briefly summarize recent developments on how the solvent effects affect the catalytic performance from the following aspects: 1) the polarity of the solvent can
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Catalytic Approaches to the Halogen Dance Reaction for Molecular Editing ChemCatChem (IF 4.5) Pub Date : 2024-03-30 Kengo Inoue, Kentaro Okano
Transposition reactions, i.e., switching the position of functional groups, are a powerful tool for molecular editing. The transposition of a halogen atom attached to an aromatic ring, referred to as the halogen dance reaction, has great potential in the fields of pharmaceuticals, agrochemicals, natural products, and functional materials. However, the substrate scope of this reaction is limited owing
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Engineering Tauriopine Dehydrogenase for Efficient Catalytic Synthesis of (R)‐Alpha‐ethyl‐2‐oxo‐1‐pyrrolidineacetic Acid ChemCatChem (IF 4.5) Pub Date : 2024-03-28 xin zhen, Xisong Feng, Wei Song, Wanqing Wei, Jing Wu, Jian Wen, Guipeng Hu, Xiaomin Li, Cong Gao, Xiulai Chen, Liming Liu
The synthetic pathway for Etiracetam depends on Alpha‐ethyl‐2‐oxo‐1‐pyrrolidineacetic acid (AEOPA) as a crucial intermediate. This paper presents an enzymatic synthesis approach for producing (R)‐AEOPA. Through database mining, we discovered a tauriopine dehydrogenase capable of catalyzing the reaction between γ‐aminobutyric acid and 2‐oxobutyric acid, resulting in the synthesis of (R)‐4‐(carbapentyl
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Scalable bioreactor production of an O2‐protected [FeFe]‐hydrogenase enables simple aerobic handling for clean chemicalsynthesis ChemCatChem (IF 4.5) Pub Date : 2024-03-28 Sarah Elizabeth Cleary, Stephen J Hall, Regina Galan-Bataller, Tara C. Lurshay, Charlotte Hancox, James J Williamson, John T. Heap, Holly Anna Reeve, Simone Morra
The enzyme CbA5H, a [FeFe]‐hydrogenase fromClostridium beijerinckii, has previously been shown to surviveexposure to oxygen, making it a promising candidate forbiotechnological applications. Thus far [NiFe]‐hydrogenases aretypically considered for such applications, due to the superior O2‐tolerance and therefore simplified enzyme handling. However,methods for production of [FeFe]‐hydrogenases are generally
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Applications of Organosilanes in Visible Light‐induced Catalytic Asymmetric Reactions ChemCatChem (IF 4.5) Pub Date : 2024-03-27 Liuzhen Hou, Weidi Cao, Xiaoming Feng
Over the past decades, visible light‐mediated photocatalysis has found a mainstream of applications in synthetic chemistry. Organosilanes have been proven to be a useful class of electron donors to generate the highly active radical species via photoinduced single electron transfer oxidation/fragmentation sequence, which may undergo follow‐up radical coupling or addition process. This minireview highlights
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Active sites formed on InVO4/Co3O4 S‐scheme heterostructure for photocatalytic hydrogen production ChemCatChem (IF 4.5) Pub Date : 2024-03-26 Xiaohong Li, Jiqiao Zhang, Zhiliang Jin
The reasonable design of S‐scheme heterojunction to avoid unwanted charge transfer paths in hybrid semiconductors is considered to be an attractive method to obtain efficient photocatalytic hydrogen evolution activity. The photocatalytic hydrogen evolution performance of the system was improved by loading ultra‐thin InVO4 nanosheets on the surface of hollow cube Co3O4 to form an S‐scheme heterojunction
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Catalytic Ammonia Formation in a Microreaction Chamber with Electrically Intensified Arc Plasma ChemCatChem (IF 4.5) Pub Date : 2024-03-26 Nguyen Van Duc Long, Nima Pourali, Pradeep Lamichhane, Mohammad Mohsen Sarafraz, Nam Nghiep Tran, Evgeny Rebrov, Hyun-Ha Kim, Volker Hessel
Ammonia (NH3) production is of global concern for today’s food supply security and as future energy vector. Plasma technology can add to supply‐chain resilience of fertilizer production and improve the environmental profile using renewable energy; allowing distributed NH3 production. With the objective to provide process intensification of small‐capacity reactors for local supply, a novel micropyramid‐disk
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Nickel‐ and Palladium‐Catalyzed Copolymerizations of Norbornene with Polar α‐Olefins. ChemCatChem (IF 4.5) Pub Date : 2024-03-26 Mingyuan Li, Yueting Fang, Zhengguo Cai, Moris S. Eisen
Recent progress regarding the copolymerization of norbornene with various polar α‐olefins catalyzed by nickel and palladium catalysts is reviewed here with special attention paid to the diverse catalyst frameworks, polar monomer scopes as well as polymer microstructures. Both the influences of steric effect and electron property of ligand substituents and the type of polar monomers on the catalytic
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Donor‐Acceptor Pyrene‐Based Covalent Organic Framework for Blue Light Photocatalytic Oxidative Coupling of Amines ChemCatChem (IF 4.5) Pub Date : 2024-03-26 Linyang Wang, Jeet Chakraborty, Maojun Deng, Jiamin Sun, Pascal van der Voort
Covalent organic frameworks (COFs) with a donor‐acceptor (D‐A) architecture have been investigated as prospective semiconducting materials, particularly for photocatalytic processes. The incorporation of electron donating and accepting moieties into the COF backbone creates nano heterojunctions, enhancing efficient light absorption, charge separation, and charge transport. Herein, three pyrene‐based
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One-Pot Reactions in Different Sites: A New Approach in Hydroformylation-Based Processes ChemCatChem (IF 4.5) Pub Date : 2024-03-26 Fábio G. Delolo, Eduardo N. dos Santos, Elena V. Gusevskaya
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Biocatalytic Syntheis of L‐Pipecolic Acid by a Lysine Cyclodeaminase: Batch and Flow Reactors ChemCatChem (IF 4.5) Pub Date : 2024-03-26 Kaja Stalder, Ana I. Benitez-Mateos, Francesca Paradisi
L‐Pipecolic Acid (L‐PA) is a valuable building block for the synthesis of pharmaceuticals such as anesthetics and immunosuppressants. Thus, more efficient and greener strategies are desired for its production. Herein, we have applied a previously engineered variant of the Lysine Cyclodeaminase from Streptomyces pristinaespiralis (e‐SpLCD) for the bioconversion of L‐Lysine into L‐PA. The reaction can
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Catalytic Enantioconvergent C(sp3)−N Coupling to Access Chiral Amines: A Concept Review ChemCatChem (IF 4.5) Pub Date : 2024-03-26 Rongrong Li, Zhiyun Hu, Zhigang Shuai, Xinzheng Yang
Nitrogen containing compounds like chiral amines have been widely used in synthetic medicines, biomass, and fine chemical products because of their particularly valuable motifs and exceedingly broad range of functionality. Enantioconvergent synthesis of chiral amines has high atomic economy and enantioselectivity with theoretically 100% yield of enantioenriched products. In this concept article, we
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Artificial Biocatalysis: Quo Vadis? ChemCatChem (IF 4.5) Pub Date : 2024-03-26 Aaron A. Ingram, Keiko Oike
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Interface Engineering of Electrocatalysts for Efficient and Selective Oxygen Evolution in Alkaline/Seawater ChemCatChem (IF 4.5) Pub Date : 2024-03-25 Daekyu Kim, Wenhan Zu, Ching Lam Kwok, Lawrence Yoon Suk Lee
Electrochemical water splitting is regarded as an effective technology for producing green hydrogen, which is crucial for addressing energy and environmental challenges. In particular, direct seawater splitting offers significant economic and environmental advantages. However, its efficiency is hindered by the high overpotential required for the oxygen evolution reaction (OER) and the competition from