Highly Efficient One-pot Electrosynthesis of Oxime Ethers from NOx over Ultrafine MgO Nanoparticles Derived from Mg-based Metal-Organic Frameworks
Angew Chem Int Ed Engl. 2024 Apr 9:e202405553. doi: 10.1002/anie.202405553. Online ahead of print.ABSTRACTOxime ethers are attractive compounds in medicinal scaffolds due to the biological and pharmaceutical properties, however, the crucial and widespread step of industrial oxime formation using explosive hydroxylamine (NH2OH) is insecure and troublesome. Herein, we present a convenient method of oxime ether synthesis in a one-pot tandem electrochemical system using magnesium based metal-organic frameworks-derived magnesium oxide anchoring in self-supporting carbon nanofiber membrane catalyst (MgO-SCM), the in situ NH2OH f...
Source: Angewandte Chemie - April 9, 2024 Category: Chemistry Authors: Shihan Wang Runan Xiang Peisen Liao Jiawei Kang Suisheng Li Min Mao Lingmei Liu Guangqin Li Source Type: research
Metal-Organic Framework-Based Hetero-Phase Nanostructure via a Secondary Building Unit (SBU) Regulating Strategy for Efficient Photocatalysis
Angew Chem Int Ed Engl. 2024 Apr 8:e202402693. doi: 10.1002/anie.202402693. Online ahead of print.ABSTRACTAs an effective method to modulate the physicochemical properties of materials, crystal phase engineering, especially hetero-phase, plays an important role in developing high-performance photocatalysts. However, it is still a huge challenge but significant to construct porous hetero-phase nanostructures with adjustable band structures. As a kind of unique porous crystalline materials, metal-organic frameworks (MOFs) might be the appropriate candidate, but the MOF-based hetero-phase is rarely reported. Herein, we develo...
Source: Angewandte Chemie - April 8, 2024 Category: Chemistry Authors: Kuo Yuan Zongyang Liu Zhuang Yan Qinbai Yun Tianqun Song Jun Guo Xiaotao Zhang Dichang Zhong Zhiyong Tang Tongbu Lu Wenping Hu Source Type: research
Yongcheng Wang
Angew Chem Int Ed Engl. 2024 Apr 8:e202405742. doi: 10.1002/anie.202405742. Online ahead of print.ABSTRACT"My favorite molecule is water. It is essential for life on Earth, and it is amazing how it can transform and adapt to different environments… The biggest challenge facing my generation of scientists is the ever-growing complexity of the problems." Find out more about Yongcheng Wang in his Introducing… Profile.PMID:38587120 | DOI:10.1002/anie.202405742 (Source: Angewandte Chemie)
Source: Angewandte Chemie - April 8, 2024 Category: Chemistry Source Type: research
Corrigendum: Spiroluchuene A Synthase: A Cyclase from Aspergillus luchuensis Forming a Spirotetracyclic Diterpene
Angew Chem Int Ed Engl. 2024 Apr 8:e202405500. doi: 10.1002/anie.202405500. Online ahead of print.NO ABSTRACTPMID:38587125 | DOI:10.1002/anie.202405500 (Source: Angewandte Chemie)
Source: Angewandte Chemie - April 8, 2024 Category: Chemistry Source Type: research
Christina W. Li
Angew Chem Int Ed Engl. 2024 Apr 8:e202405848. doi: 10.1002/anie.202405848. Online ahead of print.ABSTRACT"My long-term goal is to bring molecular-level selectivity to heterogeneous catalysis… If I could have dinner with a well-known historic figure, I would invite Alexander Borodin (best known as a composer but also an accomplished chemist) and I would ask him how chemistry and classical music were connected for him throughout his life…" Find out more about Christina W. Li in her Introducing… Profile.PMID:38587126 | DOI:10.1002/anie.202405848 (Source: Angewandte Chemie)
Source: Angewandte Chemie - April 8, 2024 Category: Chemistry Source Type: research
Corrigendum: An Oxysulfide Photocatalyst Evolving Hydrogen with an Apparent Quantum Efficiency of 30 % under Visible Light
Angew Chem Int Ed Engl. 2024 Apr 8:e202405508. doi: 10.1002/anie.202405508. Online ahead of print.NO ABSTRACTPMID:38587134 | DOI:10.1002/anie.202405508 (Source: Angewandte Chemie)
Source: Angewandte Chemie - April 8, 2024 Category: Chemistry Source Type: research
Corrigendum: Highly Efficient Green and Red Narrowband Emissive Organic Light-Emitting Diodes Employing Multi-Resonant Thermally Activated Delayed Fluorescence Emitters
Angew Chem Int Ed Engl. 2024 Apr 8:e202404739. doi: 10.1002/anie.202404739. Online ahead of print.NO ABSTRACTPMID:38587135 | DOI:10.1002/anie.202404739 (Source: Angewandte Chemie)
Source: Angewandte Chemie - April 8, 2024 Category: Chemistry Source Type: research
Enantioselective Nickel-Catalyzed Denitrogenative Transannulation En Route to N-N Atropisomers
Angew Chem Int Ed Engl. 2024 Apr 8:e202400441. doi: 10.1002/anie.202400441. Online ahead of print.ABSTRACTNickel-catalyzed transannulation reactions triggered by the extrusion of small gaseous molecules have emerged as a powerful strategy for the efficient construction of heterocyclic compounds. However, it's asymmetric synthesis remains challenging because of the difficulty in controlling stereo- and regioselectivity. Herein, we report the first nickel-catalyzed asymmetric synthesis of N-N atropisomers by the denitrogenative transannulation of benzotriazones with internal alkynes. A broad range of N-N atropisomers was obt...
Source: Angewandte Chemie - April 8, 2024 Category: Chemistry Authors: Fang-Bei Ge Chuan-Jun Lu Xiao Chen Wang Yao Mei An Yu-Kun Jiang Li-Ping Xu Ren-Rong Liu Source Type: research
Operando Spectroscopic Monitoring of Metal Chalcogenides for Overall Water Splitting: New Views of Active Species and Sites
Angew Chem Int Ed Engl. 2024 Apr 8:e202400048. doi: 10.1002/anie.202400048. Online ahead of print.ABSTRACTMetal-based chalcogenides exhibit great promise for overall water splitting, yet their intrinsic catalytic reaction mechanisms remain to be fully understood. In this work, we employed operando X-ray absorption (XAS) and in situ Raman spectroscopy to elucidate the structure-activity relationships of low-crystalline cobalt sulfide (L-CoS) catalysts toward overall water splitting. The operando results for L-CoS catalyzing the alkaline hydrogen evolution reaction (HER) demonstrate that the cobalt centers in the bulk are pr...
Source: Angewandte Chemie - April 8, 2024 Category: Chemistry Authors: Yonggui Zhao Wenchao Wan Rolf Erni Long Pan Greta R Patzke Source Type: research
Accumulation, Characterization and Reactivity of Chiral Ammonium-Carboxonium Dications in Superacid
Angew Chem Int Ed Engl. 2024 Apr 8:e202404066. doi: 10.1002/anie.202404066. Online ahead of print.ABSTRACTThe accumulation of chiral ammonium-oxocarbenium dications in superacid is evidenced by low-temperature NMR spectroscopy, X-ray diffraction analysis and confirmed by DFT calculations. Its potential for the diastereoselective remote hydrofunctionalization of non-activated alkene is also explored.PMID:38587216 | DOI:10.1002/anie.202404066 (Source: Angewandte Chemie)
Source: Angewandte Chemie - April 8, 2024 Category: Chemistry Authors: Emanuela Berrino Thomas Cantin Maxime Artault Stefanie Beck Christophe Jessen J érôme Marrot Fr édéric Guégan Agn ès Mingot Andreas Kornath Sebastien Thibaudeau Source Type: research
Achieving Exceptional Thermal and Hydrolytic Resistance in Chemically Circular Polyesters via In-Chain 1,3-Cyclobutyl Rings
Angew Chem Int Ed Engl. 2024 Apr 8:e202401682. doi: 10.1002/anie.202401682. Online ahead of print.ABSTRACTPolyesters, a highly promising class of circular polymers for achieving a closed-loop sustainable plastic economy, inherently exhibit material stability defects, especially in thermal and hydrolytic instability. Here, we introduce a class of polyesters, P(4R-BL) (R = Ph, Bu), featuring conformationally rigid 1,3-cyclobutyl rings in the backbone. These polyesters not only exhibit superior thermostability (Td,5% = 376-380 °C) but also demonstrate exceptional hydrolytic resistance with good integrity even after 1 year in...
Source: Angewandte Chemie - April 8, 2024 Category: Chemistry Authors: Chaoqun Weng Zhiqiang Ding Weijie Qiu Bin Wang Xiaoyan Tang Source Type: research
Anion-Responsive Colorimetric and Fluorometric Red-Shift in Triarylborane Derivatives: Dual Role of Phenazaborine as Lewis Acid and Electron Donor
Angew Chem Int Ed Engl. 2024 Apr 8:e202405158. doi: 10.1002/anie.202405158. Online ahead of print.ABSTRACTPhotophysical modulation of triarylboranes (TABs) through Lewis acid-base interactions is a fundamental approach in sensing anions. Yet, design principles for anion-responsive TABs displaying significant red-shift in absorption and photoluminescence (PL) have remained elusive. Herein, a new strategy for modulating photophysical properties of TABs in red-shift mode has been presented, endowing a nitrogen-bridged triarylborane (1,4-phenazaborine: PAzB) with a contradictory dual role as a Lewis acid and an electron donor....
Source: Angewandte Chemie - April 8, 2024 Category: Chemistry Authors: Nae Aota Riku Nakagawa Leonardo Evaristo de Sousa Norimitsu Tohnai Satoshi Minakata Piotr de Silva Youhei Takeda Source Type: research
Selective defluorination of trifluoromethyl substituents by conformationally induced remote substitution
Angew Chem Int Ed Engl. 2024 Apr 8:e202403477. doi: 10.1002/anie.202403477. Online ahead of print.ABSTRACTThe selective reduction of an aromatic trifluoromethyl substituent to a difluoromethyl substituent may be achieved by base-promoted elimination to form a difluoro-p-quinomethide which is trapped by an intramolecular nucleophile. High yields are obtained when the nucleophilic trap entails the conformationally favoured cyclisation of an aminoisobutyric acid (Aib) derivative. The resulting cyclised difluoromethyl-substituted arylimidazolidinone products are readily converted to versatile difluoromethyl-substituted aldehyd...
Source: Angewandte Chemie - April 8, 2024 Category: Chemistry Authors: Mehul H Jesani Maria Schwarz Shiwhu Kim Finlay L Evans Alexander White Alex Browning Roman Abrams Jonathan Clayden Source Type: research
Stereoselective Synthesis of Polysubstituted Conjugated Dienes Enabled by Photo-driven Sequential Sigmatropic Rearrangement
Angew Chem Int Ed Engl. 2024 Apr 8:e202400805. doi: 10.1002/anie.202400805. Online ahead of print.ABSTRACTWe here report a highly stereoselective method for the synthesis of polysubstituted conjugated dienes from α-aryl α-diazo alkynyl ketones and pyrazole-substituted unsymmetric aminals under mild conditions, which was driven by photo and involved 1,6-dipolar ion intermediate and quadruple sigmatropic rearrangements, was successfully developed. In this transformation, the cleavage of four bonds and the recombination of five bonds were achieved in one operational step. This protocol also provided a modular tool for const...
Source: Angewandte Chemie - April 8, 2024 Category: Chemistry Authors: Xin Ji Chaoren Shen Yuhao Ni Zhi-Yao Si Si Yuzhu Wang Xinrong Zhi Yuting Zhao Huiling Peng Lu Liu Source Type: research
Adaptive and Robust Vitrimers Fabricated by Synergy of Traditional and Supramolecular Polymers
This study leveraged the structural characteristics of a boron-based vitrimer to achieve material reinforcement and toughness enhancement, simultaneously providing novel design concepts for the construction of new vitrimeric materials.PMID:38587998 | DOI:10.1002/anie.202405761 (Source: Angewandte Chemie)
Source: Angewandte Chemie - April 8, 2024 Category: Chemistry Authors: Jiao Wang Wei You Liya Chen Ding Xiao Xuedong Xiao Tianyu Shan Yang Liu Ming Liu Guangfeng Li Wei Yu Feihe Huang Source Type: research
