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Advanced Synthesis & Catalysis

Synthesis of Pyrazolo[1,2‐a]cinnolines via Rhodium(III)‐Catalyzed [4+2] Annulation Reactions of Pyrazolidinones with Sulfoxonium Ylides

Published: 18 May 2021

Author(s): Shulei Hu, Xu Han, Xiong Xie, Feifei Fang, Yong Wang, Abdusaid Saidahmatov, Hong Liu, Jiang Wang

Abstract A method to synthesize pyrazolo[1,2‐a]cinnolines via rhodium(III)‐catalyzed C−H activation of pyrazolidinones and subsequent [4+2] annulation of sulfoxonium ylides was developed. 5‐Substituted or 5,10‐disubstituted pyrazolo[1,2‐a]cinnolines could be obtained by slightly adjusting the reaction conditions. Gram‐scale synthesis and practical transformations proved the practicability of this method. The mechanism of this method was proposed in the article on the basis of preliminary...

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Journal of Food Science

Development of non‐enzymatic ZnO nanocomposite‐based optical sensor for l‐lactate detection in tomato samples

Published: 18 May 2021

Author(s): Gurdeep Rattu, P. Murali Krishna

Summary l‐lactate is a conjugate base of α‐hydroxy acid, a key organic chemical in food processing, fermentation, biology and chemical industries. We are reporting for the first time a facile and rapid non‐enzymatic nanosensor for l‐lactate detection in tomato‐based products using 3‐aminophenylboronic acid (3‐APBA)‐added zinc oxide nanoparticles (ZnO NPs). 3‐APBA‐functionalised ZnO NPs have a selective and stable SPR intensity change at pH 5.5 to 7.5 and forms a reversible ester with bound...

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Chemistry - A European Journal

5,11‐Diazadibenzo[hi,qr]tetracene: Synthesis, Properties, and Reactivity toward Nucleophilic Reagents

Published: 18 May 2021

Author(s): Keisuke Fujimoto, Satoshi Takimoto, Shota Masuda, Toshiyasu Inuzuka, Kazutaka Sanada, Masami Sakamoto, Masaki Takahashi

Abstract 5,11‐Diazadibenzo[hi,qr]tetracene was synthesized as a new nitrogen‐substituted polycyclic heteroaromatic compound by Pd‐catalyzed cycloisomerization of an alkyne precursor followed by oxidative cyclization with bis(trifluoroacetoxy)iodobenzene. The substitution of imine‐type nitrogen atoms significantly enhanced its electron‐accepting character and facilitated the direct nucleophilic addition of arylamines under strongly basic conditions to afford the desired amino‐substituted...

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Chemistry - A European Journal

A Cytotoxic Bis(1,2,3‐triazol‐5‐ylidene)carbazolide Gold(III) Complex Targets DNA by Partial Intercalation

Published: 18 May 2021

Author(s): Danielle Westhuizen, Cathryn A. Slabber, Manuel A. Fernandes, Daniël F. Joubert, George Kleinhans, C. Johan Westhuizen, André Stander, Orde Q. Munro, Daniela I. Bezuidenhout

Abstract The syntheses of bis(triazolium)carbazole precursors and their corresponding coinage metal (Au, Ag) complexes are reported. For alkylated triazolium salts, di‐ or tetranuclear complexes with bridging ligands were isolated, while the bis(aryl) analogue afforded a bis(carbene) AuI‐CNC pincer complex suitable for oxidation to the redox‐stable [AuIII(CNC)Cl]+ cation. Although the ligand salt and the [AuIII(CNC)Cl]+ complex were both notably cytotoxic toward the breast cancer cell line...

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Chemistry - A European Journal

Single Mn Atom Anchored on Nitrogen‐Doped Graphene as a Highly Efficient Electrocatalyst for Oxygen Reduction Reaction

Published: 18 May 2021

Author(s): Lei Li, Yameng Li, Rao Huang, Xinrui Cao, Yuhua Wen

Abstract Single Mn atom on nitrogen‐doped graphene (MnN4‐G) has exhibited good structural stability and high activity for the adsorption and dissociation of an O2 molecule, becoming a promising single‐atom catalyst (SAC) candidate for oxygen reduction reaction (ORR). However, the catalytic activity of MnN4‐G for the ORR and the optimal reaction pathway remain obscure. In this work, density‐functional theory calculations were employed to comprehensively investigate all the possible pathways and...

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European Journal of Organic Chemistry

Palladium‐Catalysed Carboborylation for the Synthesis of Borylated Indanes

Published: 18 May 2021

Author(s): Andrzej Zieba, Joel F. Hooper

Abstract A palladium‐catalysed carboborylation reaction for the synthesis of borylated indanes has been investigated. This reaction proceeds in good yields with an achiral catalyst, and is tolerant of substitution on the aryl ring, although sensitivity to the substitution of the alkene was observed. Initial studies towards an enantioselective version of this reaction were undertaken, identifying phosphoramidites as a promising ligand class. This allowed for the synthesis of chiral indane and...

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Journal of Food Biochemistry

Evaluation of nutritional composition of Citrullus lanatus Linn. (watermelon) seed and biochemical assessment of the seed oil in rats

Published: 18 May 2021

Author(s): Rita Eke, Emmanuel Ejiofor, Sunday Oyedemi, Samuel Onoja, Ndukaku Omeh

Abstract The present study investigated the nutritional composition of watermelon seeds and the effect of extracted oil on the biochemical parameters in rats after 28 days of oral administration. The watermelon seeds showed considerable proximate values but with less moisture, crude fiber, ash, and phytochemical components. The maximal dose of 50 ml/kg of watermelon seed oil (WMSO) showed no sign of toxicity in rats. WMSO significantly decreased serum cholesterol, triglyceride, LDL, ALT, and...

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Advanced Synthesis & Catalysis

Visible Light‐Mediated Functionalization of Selenocystine‐Containing Peptides

Published: 18 May 2021

Author(s): Sindija Lapcinska, Pavels Dimitrijevs, Linards Lapcinskis, Pavel Arsenyan

Abstract A straightforward and atom‐economic method for the functionalization of short selenocystine‐containing peptides is presented. This method is shown to be tolerant to unprotected peptides. The detailed protocol is based on the generation of a selenium radical via visible light‐initiated reaction in the presence of transition metal‐free photocatalyst. The selenium radical is further oxidized to an electrophile and trapped by N‐heterocycles. The mechanism is confirmed by NMR, HRMS, UV,...

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Advanced Synthesis & Catalysis

Construction of Oxepino[3,2‐b]indoles via [4+3] Annulation of 2‐Ylideneoxindoles with Crotonate‐Derived Sulfur Ylides

Published: 18 May 2021

Author(s): Xing‐Hai Fei, Yong‐Long Zhao, Fen‐Fen Yang, Xiang Guan, Zong‐Qin Li, Da‐Peng Wang, Meng Zhou, Yuan‐Yong Yang, Bin He

Abstract A [4+3] annulation of 2‐ylideneoxindoles with crotonate‐derived sulfur ylides has been developed. A series of oxepino[3,2‐b]indoles were prepared in moderate to excellent yields (62‐93%) under mild conditions. Moreover, the synthetic oxepino[3,2‐b] indoles can be further transformed into more complex cyclopropa[5,6]oxepino[3,2‐b]indoles via a [2+1] cyclopropanation. In addition, the synthetic compounds show certain antiproliferative activity against K562 and MCF‐7 cells, and its IC50...

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Color Research & Application

Vividly warm: The color saturation of logos on brands' customer sensitivity judgment

Published: 18 May 2021

Author(s): Chunqu Xiao, Hong Zhu, Xin Wang, Liang Wu

Abstract Colors play an essential role in brand image, especially in brand logos. The extant research has mainly focused on the hue and ignoring the saturation. The current research has provided a new insight that logos with high saturated colors could help brands to increase intimacy with customers and further benefit the brand image. A series of studies tested the effect of color saturation on the brand's customer sensitivity. Study 1 showed that shoes with the high saturated logo were...

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Most-accessed articles from each Chemistry Europe, ACES, and GDCh journal

March 2021

 


Yunqi Shao, Lisanne Knijff, Florian M. Dietrich, Kersti Hermansson, Chao Zhang
Modelling Bulk Electrolytes and Electrolyte Interfaces with Atomistic Machine Learning [Minireview]
Batteries & Supercaps 2021, vol. 4, no. 4, p. 585

Hemanth Maddali, Catherine E. Miles, Joachim Kohn, Deirdre M. O'Carroll
Optical Biosensors for Virus Detection: Prospects for SARS-CoV-2/COVID-19 [Minireview]
ChemBioChem 2021, vol. 22, no. 7, p. 1176

Christian M. Heckmann, Francesca Paradisi
Looking Back: A Short History of the Discovery of Enzymes and How They Became Powerful Chemical Tools [Review]
ChemCatChem 2020, vol. 12, no. 24, p. 6082

Gerhard Hilt
Basic Strategies and Types of Applications in Organic Electrochemistry [Concept]
ChemElectroChem 2020, vol. 7, no. 2, p. 395

Michał Rams, Aleksej Jochim, Michael Böhme, Thomas Lohmiller, Magdalena Ceglarska, Marek M. Rams, Alexander Schnegg, Winfried Plass, Christian Näther
Single-Chain Magnet Based on Cobalt(II) Thiocyanate as XXZ Spin Chain [Full Paper]
Chem. Eur. J. 2020, vol. 26, no. 13, p. 2837

Zheng-Wang Qu, Hui Zhu, Sergey A. Katsyuba, Vera L. Mamedova, Vakhid A. Mamedov, Stefan Grimme
Acid-Catalyzed Rearrangements of 3-Aryloxirane-2-Carboxamides: Novel DFT Mechanistic Insights [Communication]
ChemistryOpen 2020, vol. 9, no. 7, p. 743

Miaofang Chi, Harry M. Meyer, Zili Wu, Liangbo Liang, Peter V. Bonnesen, Dale K. Hensley, Rui Peng, Yang Song, Cheng Ma, Bobby G. Sumpter, Adam J. Rondinone
High-Selectivity Electrochemical Conversion of CO2 to Ethanol using a Copper Nanoparticle/N-Doped Graphene Electrode [Full Paper]
ChemistrySelect 2016, vol. 1, no. 19, p. 6055

Antoine Daina, Vincent Zoete
A BOILED‐Egg To Predict Gastrointestinal Absorption and Brain Penetration of Small Molecules [Communication]
ChemMedChem 2016, vol. 11, no. 11, p. 1117

Sebastian Gisbertz, Bartholomäus Pieber
Heterogeneous Photocatalysis in Organic Synthesis [Review]
ChemPhotoChem 2020, vol. 4, no. 7, p. 456

Trevor A. Hamlin, Marcel Swart, F. Matthias Bickelhaupt
Nucleophilic Substitution (SN2): Dependence on Nucleophile, Leaving Group, Central Atom, Substituents, and Solvent [Minireview]
ChemPhysChem 2018, vol. 19, no. 11, p. 1315

Daewoo Han, Andrew J. Steckl
Coaxial Electrospinning Formation of Complex Polymer Fibers and their Applications [Review]
ChemPlusChem 2019, vol. 84, no. 10, p. 1453

Thomas Aro, Pedram Fatehi
Production and Application of Lignosulfonates and Sulfonated Lignin [Review]
ChemSusChem 2017, vol. 10, no. 9, p. 1861

Carolin Hoyer, Peter Schwerk, Lisa Suntrup, Julia Beerhues, Maite Nössler, Uta Albold, Jens Dernedde, Karsten Tedin, Biprajit Sarkar
Synthesis, Characterization, and Evaluation of Antibacterial Activity of Ferrocenyl-1,2,3-Triazoles, Triazolium Salts, and Triazolylidene Complexes of Gold(i) and Silver(i) [Full Paper]
Eur. J. Inorg. Chem. 2021, p. 1373

Luca Capaldo, Davide Ravelli
Hydrogen Atom Transfer (HAT): A Versatile Strategy for Substrate Activation in Photocatalyzed Organic Synthesis [Microreview]
Eur. J. Org. Chem. 2017, p. 2056

Catharina Goedecke
Why Does Iodine Turn Starch Blue?
ChemViews Magazine 2016

Shoji Kobayashi, Keisuke Shibukawa, Yuta Miyaguchi, Araki Masuyama
Grignard Reactions in Cyclopentyl Methyl Ether [Full Paper]
Asian J. Org. Chem. 2016, vol. 5, no. 5, p. 636

Sandip G. Agalave, Suleman R. Maujan, Vandana S. Pore
Click Chemistry: 1,2,3‐Triazoles as Pharmacophores [Focus Review]
Chem. Asian J. 2011, vol. 6, no. 10, p. 2696

Daojin Zhou, Pengsong Li, Wenwen Xu, Sana Jawaid, Jamesh Mohammed-Ibrahim, Wen Liu, Yun Kuang, Xiaoming Sun
Recent Advances in Non-Precious Metal-Based Electrodes for Alkaline Water Electrolysis [Minireview]
ChemNanoMat 2020, vol. 6, no. 3, p. 336

Huaibo Zhao, Daniele Leonori
Minimization of Back-Electron Transfer Enables the Elusive sp3 C−H Functionalization of Secondary Anilines [Communication]
Angew. Chem. Int. Ed. 2021, vol. 60, no. 14, p. 7669

Abas Mohsenzadeh, Akram Zamani, Mohammad J. Taherzadeh
Bioethylene Production from Ethanol: A Review and Techno-economical Evaluation [Review]
ChemBioEng Rev. 2017, vol. 4, no. 2, p. 75

Özge Çepelioğullar Mutlu, Thomas Zeng
Challenges and Opportunities of Modeling Biomass Gasification in Aspen Plus: A  Review [Review]
Chem. Eng. Technol. 2020, vol. 43, no. 9, p. 1674

Nuria Sánchez-Bastardo, Robert Schlögl, Holger Ruland
Methane Pyrolysis for CO2-Free H2 Production: A Green Process to Overcome Renewable Energies Unsteadiness [Review]
Chem. Ing. Tech. 2020, vol. 92, no. 10, p. 1596

Emiliano Feresin*, Mykhailo Kondratiuk, Julia Nowack, Lukas Gooßen*
Handreinigung auf molekularer Ebene - Die Rolle der Solvatation [Artikel]
Chem. Unserer Zeit 2021, vol. 55, no. 1, p. 28

Hilbert Meyer
Guter Unterricht an guten Schulen? [Aufsatz]
CHEMKON 2006, vol. 13, no. 2, p. 77

Bambus in Coffee-to-go-Bechern [Analytik]
Lebensmittelchemie 2021, vol. 75, no. 1, p. 2

Jan Paradies, Jennifer Andexer, Uwe Beifuss, Florian Beuerle, Malte Brasholz, Rolf Breinbauer, Martin Ernst, Ruth Ganardi, Tobias A. M. Gulder, Wolfgang Hüttel, Stephanie Kath-Schorr, Karsten Körber, Markus Kordes, Matthias Lehmann, Thomas Lindel, Burkhard Luy, Christian Mück-Lichtenfeld, Claudia Muhle-Goll, Jochen Niemeyer, Roland Pfau, Jörg Pietruszka, Johannes L. Röckl, Norbert Schaschke, Mathias O. Senge, Bernd F. Straub, Siegfried R. Waldvogel, Thomas Werner, Daniel B. Werz, Christian Winter
Organische Chemie [Wissenschaft + Forschung]
Nachr. Chem. 2021, vol. 69, no. 3, p. 38

Most cited articles from Chemistry Europe, ACES, and GDCh journals


Articles on this list are the most frequently cited ones among those published in 2017 or 2018 according to Web of Science. They have contributed the most to the journal's impact factor in 2019.

 


Yuanjun Chen, Shufang Ji, Yanggang Wang, Juncai Dong, Wenxing Chen, Zhi Li, Rongan Shen, Lirong Zheng, Zhongbin Zhuang, Dingsheng Wang, Yadong Li
Isolated Single Iron Atoms Anchored on N-Doped Porous Carbon as an Efficient Electrocatalyst for the Oxygen Reduction Reaction [Communication]
Angew. Chem. Int. Ed. 2017, vol. 56, pp. 6937–6941

Qian Sun, Kah Chun Lau, Dongsheng Geng, Xiangbo Meng
Atomic and Molecular Layer Deposition for Superior Lithium-Sulfur Batteries: Strategies, Performance, and Mechanisms [Review]
Batteries Supercaps 2018, vol. 1, pp. 41–68

Lik Hang Yuen, Raphael M. Franzini
Achievements, Challenges, and Opportunities in DNA-Encoded Library Research: An Academic Point of View [Minireview]
ChemBioChem 2017, vol. 18, pp. 829–836

Konstantinos C. Christoforidis, Paolo Fornasiero
Photocatalytic Hydrogen Production: A Rift into the Future Energy Supply [Review]
ChemCatChem 2017, vol. 9, pp. 1523–1544

Marwa Elkady, Hassan Shokry, Hesham Hamad
Microwave-Assisted Synthesis of Magnetic Hydroxyapatite for Removal of Heavy Metals from Groundwater [Research Article]
Chem. Eng. Technol. 2018, vol. 41, pp. 553–562

Massimo Baroncini, Lorenzo Casimiro, Christiaan de Vet, Jessica Groppi, Serena Silvi, Alberto Credi
Making and Operating Molecular Machines: A Multidisciplinary Challenge [Minireview]
ChemistryOpen 2018, vol. 7, pp. 169–179

Hanshen Xin, Xike Gao
Application of Azulene in Constructing Organic Optoelectronic Materials: New Tricks for an Old Dog [Minireview]
ChemPlusChem 2017, vol. 82, pp. 945–956

Hojat Veisi, Mozhgan Pirhayati, Ali Kakanejadifard, Pourya Mohammadi, Mohammad Reza Abdi, Javad Gholami, Saba Hemmati
In Situ Green Synthesis of Pd Nanoparticles on Tannic Acid-Modified Magnetite Nanoparticles as a Green Reductant and Stabilizer Agent: Its Application as a Recyclable Nanocatalyst (Fe3O4@TA/Pd) for Reduction of 4-Nitrophenol and Suzuki Reactions [Full Paper]
ChemistrySelect 2018, vol. 3, pp. 1820–1826

Jaqueline Daniel-Gromke, Nadja Rensberg, Velina Denysenko, Walter Stinner, Tina Schmalfuß, Mattes Scheftelowitz, Michael Nelles, Jan Liebetrau
Current Developments in Production and Utilization of Biogas and Biomethane in Germany [Review]
Chem. Ing. Tech. 2018, vol. 90, pp. 17–35

Sayantani Sikdar, Madhusree Kundu
A Review on Detection and Abatement of Heavy Metals [Review]
ChemBioEng Rev. 2018, vol. 5, pp. 18–29

Tingting Liu, Lisi Xie, Jianhui Yang, Rongmei Kong, Gu Du, Abdullah M. Asiri, Xuping Sun, Liang Chen
Self-Standing CoP Nanosheets Array: A Three-Dimensional Bifunctional Catalyst Electrode for Overall Water Splitting in both Neutral and Alkaline Media [Communication]
ChemElectroChem 2017, vol. 4, pp. 1840–1845

Ruibin Wang, Liheng Chen, J.Y. Zhu, Rendang Yang
Tailored and Integrated Production of Carboxylated Cellulose Nanocrystals (CNC) with Nanofibrils (CNF) through Maleic Acid Hydrolysis [Full Paper]
ChemNanoMat 2017, vol. 3, pp. 328–335

Chengwei Liu, Michal Szostak
Twisted Amides: From Obscurity to Broadly Useful Transition-Metal-Catalyzed Reactions by N−C Amide Bond Activation [Minireview]
Chem. Eur. J. 2017, vol. 23, pp. 7157–7173

Jian Shu, Dianping Tang
Current Advances in Quantum-Dots-Based Photoelectrochemical Immunoassays [Focus Review]
Chem. Asian J. 2017, vol. 12, pp. 2780–2789

Jian Rong, Chuanfa Ni, Jinbo Hu
Metal-Catalyzed Direct Difluoromethylation Reactions [Focus Review]
Asian J. Org. Chem. 2017, vol. 6, pp. 139–152

Juan Alberto Sirvent, Ulrich Lücking
Novel Pieces for the Emerging Picture of Sulfoximines in Drug Discovery: Synthesis and Evaluation of Sulfoximine Analogues of Marketed Drugs and Advanced Clinical Candidates [Full Paper]
ChemMedChem 2017, vol. 12, pp. 487–501

Grzegorz Greczynski, Lars Hultman
C 1s Peak of Adventitious Carbon Aligns to the Vacuum Level: Dire Consequences for Material's Bonding Assignment by Photoelectron Spectroscopy [Communication]
ChemPhysChem 2017, vol. 18, pp. 1507–1512

Jia-Rong Chen, Dong-Mei Yan, Qiang Wei, Wen-Jing Xiao
Photocascade Catalysis: A New Strategy for Cascade Reactions [Concept]
ChemPhotoChem 2017, vol. 1, pp. 148–158

Zhiming Pan, Yun Zheng, Fangsong Guo, Pingping Niu, Xinchen Wang
Decorating CoP and Pt Nanoparticles on Graphitic Carbon Nitride Nanosheets to Promote Overall Water Splitting by Conjugated Polymers [Communication]
ChemSusChem 2017, vol. 10, pp. 87–90

Enzo Alessio
Thirty Years of the Drug Candidate NAMI-A and the Myths in the Field of Ruthenium Anticancer Compounds: A Personal Perspective [Microreview]
Eur. J. Inorg. Chem. 2017, pp. 1549–1560

Marcel Garbe, Kathrin Junge, Matthias Beller
Homogeneous Catalysis by Manganese-Based Pincer Complexes [Microreview]
Eur. J. Org. Chem. 2017, pp. 4344–4362

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Magazine of Chemistry Europe (16 European Chemical Societies) published by Wiley-VCH