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Angewandte Chemie

Catalytic Oxo/Imido Heterometathesis by a Well‐Defined Silica‐Supported Titanium Imido Complex

Published: 20 July 2018

Author(s): Pavel A. Zhizhko, Andrey V. Pichugov, Nikolai S. Bushkov, Florian Allouche, Anton A. Zhizhin, Dmitry N. Zarubin, Nikolai A. Ustynyuk

Abstract Grafting Ti(=NtBu)(Me2Pyr)2(py)2 (Me2Pyr= 2,5‐dimethylpyrrolyl, py=pyridine) onto the surface of silica partially dehydroxylated at 700 °C gives the well‐defined silica‐supported Ti imido complex (≡SiO)Ti(=NtBu)(Me2Pyr)(py)2, which is fully characterized by IR and solid‐state NMR spectroscopy as well as elemental and mass balance analyses. While stoichiometric imido‐transfer reactivity is typical for Ti imides, the obtained surface...

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Angewandte Chemie

Surfactant Assembly within Pickering Emulsion Droplets for Fabrication of Interior‐Structured Mesoporous Carbon Microspheres

Published: 20 July 2018

Author(s): Dawei Liu, Nan Xue, Lijuan Wei, Ye Zhang, Zhangfeng Qin, Xuekuan Li, Bernard P. Binks, Hengquan Yang

Abstract Large‐sized carbon spheres with controllable interior architecture are highly desired, but there is no method to synthesize these materials. Here, we develop a novel method to synthesize interior‐structured mesoporous carbon microspheres (MCMs), based on the surfactant assembly within water droplet‐confined spaces. Our approach is shown to access a library of unprecedented MCMs such as hollow MCMs, multi‐chambered MCMs,...

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Angewandte Chemie

An Immobilized‐Dirhodium Hollow‐Fiber Flow Reactor for Scalable and Sustainable C−H Functionalization in Continuous Flow

Published: 20 July 2018

Author(s): Chun‐Jae Yoo, Daniel Rackl, Wenbin Liu, Caroline B. Hoyt, Brian Pimentel, Ryan P. Lively, Huw M. L. Davies, Christopher W. Jones

Abstract A scalable flow reactor is demonstrated for enantioselective and regioselective rhodium carbene reactions (cyclopropanation and C−H functionalization) by developing cascade reaction methods employing a microfluidic flow reactor system containing immobilized dirhodium catalysts in conjunction with the flow synthesis of diazo compounds. This allows the utilization of the energetic diazo compounds in a safe manner and the...

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Angewandte Chemie

Cyclopentene Annulations of Alkene Radical Cations with Vinyl Diazo Species Using Photocatalysis

Published: 20 July 2018

Author(s): Francisco J. Sarabia, Qiankun Li, Eric M. Ferreira

Abstract A direct (3+2) cycloaddition between alkenes and vinyl diazo reagents using either Cr or Ru photocatalysis is described. The intermediacy of a radical cation species enables a nucleophilic interception by vinyl diazo compounds, a departure from their traditional electrophilic behavior. A variety of cyclopentenes are synthesized using this method, and experimental insights implicate a direct cycloaddition instead of a...

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Angewandte Chemie

Selective Functionalization of Aminoheterocycles by a Pyrylium Salt

Published: 20 July 2018

Author(s): Daniel Moser, Yaya Duan, Feng Wang, Yuanhong Ma, Matthew J. O'Neill, Josep Cornella

Abstract The functionalization of aminoheterocycles by using a pyrylium tetrafluoroborate reagent (Pyry‐BF4) is presented. This reagent efficiently condenses with a great variety of heterocyclic amines and primes the C−N bond for nucleophilic aromatic substitution. More than 60 examples for the formation of C−O, C−N, C−S, or C−SO2R bonds are disclosed herein. In contrast to C−N activation through diazotization and polyalkylation, this method is...

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Angewandte Chemie

Dry Chemistry of Ferrate(VI): A Solvent‐free Mechanochemical Way for Versatile Green Oxidation

Published: 20 July 2018

Author(s): Zhao‐Yang Zhang, Deyang Ji, Wenting Mao, Yu Cui, Qing Wang, Lu Han, Hongliang Zhong, Zhongming Wei, Yixin Zhao, Kasper Nørgaard, Tao Li

Abstract The +6 oxidation state of iron generally exists in the form of ferrate(VI) with high redox potential and environmentally friendly nature. Although ferrate(VI) has been known for over a century, its chemistry is still limited to the solvent‐based reactions that suffers from the insolubility/instability of this oxidant and the environmental issues caused by hazardous solvents. Herein, we explore the solvent‐free reactivity of...

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Angewandte Chemie

Robust Ultramicroporous Metal–Organic Frameworks with Benchmark Affinity for Acetylene

Published: 20 July 2018

Author(s): Yun‐Lei Peng, Tony Pham, Pengfei Li, Ting Wang, Yao Chen, Kai‐Jie Chen, Katherine A. Forrest, Brian Space, Peng Cheng, Michael J. Zaworotko, Zhenjie Zhang

Abstract Highly selective separation and/or purification of acetylene from various gas mixtures is a relevant and difficult challenge that currently requires costly and energy‐intensive chemisorption processes. Two ultramicroporous metal–organic framework physisorbents, NKMOF‐1‐M (M=Cu or Ni), offer high hydrolytic stability and benchmark selectivity towards acetylene versus several gases at ambient temperature. The performance of...

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Angewandte Chemie

Alkali Metal Species in the Reversible Activation of H 2

Published: 20 July 2018

Author(s): Maotong Xu, Andrew R. Jupp, Zheng‐Wang Qu, Douglas W. Stephan

Abstract MP(tBu)2 (M=Li, Na, K), KH and KN(SiMe3)2 are shown to activate HD reversibly. In the case of MP(tBu)2 this leads to isotopic scrambling and the formation of H2, D2, H(D)P(tBu)2 and MH(D) in C6D6. In toluene, KP(tBu)2 reacts with H2 but also leads to isotopic scrambling into the methyl groups of the solvent toluene. DFT calculations reveal that these systems effect H2 activation via cooperative interactions with the Lewis acidic alkali metal and...

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Biotechnology and Bioengineering

Outline‐etching image segmentation reveals enhanced cell chirality through intercellular alignment

Published: 20 July 2018

Author(s): Yaozhun Huang, Yuanye Bao, Hoi Kwan Kwong, Ting‐Hsuan Chen, Miu Ling Lam

Abstract Cells cultured on micropatterns exhibit a chiral orientation, which may underlie the development of left–right asymmetry in tissue microarchitectures. To investigate this phenomenon, fluorescence staining of nuclei has been used to reveal such orientation. However, for images with high cell density, analysis is difficult because of the overlapping nuclei. Here, we report an image processing method that can acquire cell...

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Chemistry - An Asian Journal

Impact of Higher‐Order Structuralization on the Adsorptive Properties of Metal–Organic Frameworks

Published: 20 July 2018

Author(s): Oliver M. Linder‐Patton, Brock T. Rogers, Kenji Sumida

Abstract The structural processing of metal–organic frameworks (MOFs) over multiple length scales is critical for their successful use as adsorbents in a variety of emerging applications. Although significant advances in molecular‐scale design have provided strategies to boost the adsorptive capacities of MOFs, relatively little attention has been directed toward understanding the influence of higher‐order structuralization on the...

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

June 2018

 


Saki Ichikawa, Shaolin Zhu, Stephen L. Buchwald
A Modified System for the Synthesis of Enantioenriched N-Arylamines through Copper-Catalyzed Hydroamination [Communication]
Angew. Chem. Int. Ed. 2018, vol. 57, p. 8714

Parker Nichols, Alexandra Born, Morkos Henen, Dean Strotz, Celestine N Chi, Peter Güntert, Beat Rolf Vögeli
Extending the Applicability of Exact Nuclear Overhauser Enhancements to Large Proteins and RNA [Minireview]
ChemBioChem 2018

Isabela C. Man, Hai-Yan Su, Federico Calle-Vallejo, Heine A. Hansen, José I. Martínez, Nilay G. Inoglu, John Kitchin, Thomas F. Jaramillo, Jens K. Nørskov, Jan Rossmeisl
Universality in Oxygen Evolution Electrocatalysis on Oxide Surfaces [Full Paper]
ChemCatChem 2011, vol. 3, p. 1159

Klaus Roth
Die Suche nach dem Blau der „Blauen Blume“ [Artikel]
Chem. Unserer Zeit 2018, vol. 52, p. 192

Balaram Mukhopadhyay, Rituparna Das
Chemical O-Glycosylations: An Overview [Review]
ChemistryOpen 2016, vol. 5, p. 401

Philip C. Andrews, Lisandra L. Martin, Alexandr N. Simonov
Leone Spiccia Memorial Issue [Editorial]
ChemPlusChem 2018, vol. 83, p. 548

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, p. 6055

Hubert Rauscher, Kirsten Rasmussen, Birgit Sokull-Klüttgen
Regulatory Aspects of Nanomaterials in the EU [Research Article]
Chem. Ing. Tech. 2017, vol. 89, p. 224

Abas Mohsenzadeh, Akram Zamani, Mohammad J. Taherzadeh
Bioethylene Production from Ethanol: A Review and Techno-economical Evaluation [Review]
ChemBioEng Rev. 2017, vol. 4, p. 75

Lantao Liu, Yanli Zhou, Shuang Liu, Maotian Xu
The Applications of Metal−Organic Frameworks in Electrochemical Sensors [Review]
ChemElectroChem 2018, vol. 5, p. 6

Santosh K. Tiwari, Raghvendra Kumar Mishra, Sung Kyu Ha, Andrzej Huczko
Evolution of Graphene Oxide and Graphene: From Imagination to Industrialization [Focus Review]
ChemNanoMat 2018, vol. 4, p. 598

R. Aleyda Garza-Sanchez, Tuhin Patra, Adrian Tlahuext-Aca, Felix Strieth-Kalthoff, Frank Glorius
DMSO as a Switchable Alkylating Agent in Heteroarene C−H Functionalization [Communication]
Chem. Eur. J. 2018

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, p. 2696

Yunhe Jin, Hua Fu
Visible-Light Photoredox Decarboxylative Couplings [Focus Review]
Asian J. Org. Chem. 2017, vol. 6, p. 368

Christopher J Matheson, Kimberly A Casalvieri, Donald S Backos, Philip Reigan
Development of potent pyrazolopyrimidinone-based WEE1 inhibitors with limited single-agent cytotoxicity for cancer therapy [Full Paper]
ChemMedChem 2018

Gloria Tabacchi
Supramolecular Organization in Confined Nanospaces [Review]
ChemPhysChem 2018, vol. 19, p. 1249

Emily B. Corcoran, François Lévesque, Jonathan P. McMullen, John R. Naber
Studies Toward the Scaling of Gas-Liquid Photocycloadditions [Article]
ChemPhotoChem 2018

An-Na Cho, Nam-Gyu Park
Impact of Interfacial Layers in Perovskite Solar Cells [Review]
ChemSusChem 2017, vol. 10, p. 3687

Ross J. Marshall, Ross S. Forgan
Postsynthetic Modification of Zirconium Metal-Organic Frameworks [Microreview]
Eur. J. Inorg. Chem. 2016, p. 4310

Romaric Gérardy, Noémie Emmanuel, Thomas Toupy, Victor-Emmanuel Kassin, Nelly Ntumba Tshibalonza, Michaël Schmitz, Jean-Christophe M. Monbaliu
Continuous Flow Organic Chemistry: Successes and Pitfalls at the Interface with Current Societal Challenges [Microreview]
Eur. J. Org. Chem. 2018, p. 2301

46. Deutscher Lebensmittelchemikertag 2017 in Würzburg [Tagung]
Lebensmittelchemie 2018, vol. 72, p. 1

Markus Hiebel, Katharina Reh
Kreislaufwirtschaft: Von Anfang an ans Ende denken [Industrie & Technik]
Nachr. Chem. 2018, vol. 66, p. 606

Alexander Engl, Alexandra Schmelzer, Björn Risch
Chemie Pur - Unterrichten in der Natur: Ätherischen Ölen auf der Spur [Artikel]
CHEMKON 2018, vol. 25, p. 7

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

Most cited articles from each ChemPubSoc Europe, ACES, and GDCh journal


2016

 


Shoujun Zhu, Qingnan Meng, Lei Wang, Junhu Zhang, Yubin Song, Han Jin, Kai Zhang, Hongchen Sun, Haiyu Wang, Bai Yang
Highly Photoluminescent Carbon Dots for Multicolor Patterning, Sensors, and Bioimaging
Angew. Chem. Int. Ed. 2013, vol. 52, pp. 3953–3957

Balayeshwanth R. Vummidi, Jawad Alzeer, Nathan W. Luedtke
Fluorescent Probes for G-Quadruplex Structures [Review]
ChemBioChem 2013, vol. 14, pp. 540–558

Zhi-Yuan Gu, Jihye Park, Aaron Raiff, Zhangwen Wei, Hong-Cai Zhou
Metal–Organic Frameworks as Biomimetic Catalysts [Minireview]
ChemCatChem 2014, vol. 6, pp. 67–75

Anthony J. Arduengo, Roland Krafczyk
Auf der Suche nach Stabilen Carbenen [Organische Chemie]
Chem. Unserer Zeit 1998, vol. 32, pp. 6–14

Marc Steinmetz, Stefan Grimme
Benchmark Study of the Performance of Density Functional Theory for Bond Activations with (Ni,Pd)-Based Transition-Metal Catalysts [Full Paper]
ChemistryOpen 2013, vol. 2, pp. 115–124

Philipp Scharf, Jens Müller
Nucleic Acids With Metal-Mediated Base Pairs and Their Applications [Review]
ChemPlusChem 2013, vol. 78, pp. 20–34

Philipp Kaiser, Rajabhau?Bajirao Unde, Christoph Kern, Andreas Jess
Production of Liquid Hydrocarbons with CO2 as Carbon Source based on Reverse Water-Gas Shift and Fischer-Tropsch Synthesis [Research Article]
Chem. Ing. Tech. 2013, vol. 85, pp. 489–499

Xiaosi Zhou, Yu-Guo Guo
Highly Disordered Carbon as a Superior Anode Material for Room-Temperature Sodium-Ion Batteries [Communication]
ChemElectroChem 2014, vol. 1, pp. 83–86

Chuanxi Wang, Zhenzhu Xu, Chi Zhang
Polyethyleneimine-Functionalized Fluorescent Carbon Dots: Water Stability, pH Sensing, and Cellular Imaging [Full Paper]
ChemNanoMat 2015, vol. 1, pp. 122–127

Konggang Qu, Jiasi Wang, Jinsong Ren, Xiaogang Qu
Carbon Dots Prepared by Hydrothermal Treatment of Dopamine as an Effective Fluorescent Sensing Platform for the Label-Free Detection of Iron(III) Ions and Dopamine [Full Paper]
Chem. Eur. J. 2013, vol. 19, pp. 7243–7249

Yinuo Wu, Jun Wang, Fei Mao, Fuk Yee Kwong
Palladium-Catalyzed Cross-Dehydrogenative Functionalization of C(sp2)–H Bonds [Focus Review]
Chem. Asian J. 2014, vol. 9, pp. 26–47

Naohiko Yoshikai, Ye Wei
Synthesis of Pyrroles, Indoles, and Carbazoles through Transition-Metal-Catalyzed C–H Functionalization [Review]
Asian J. Org. Chem. 2013, vol. 2, pp. 466–478

Lluís Ballell, Robert H. Bates, Rob J. Young, Daniel Alvarez-Gomez, Emilio Alvarez-Ruiz, Vanessa Barroso, Delia Blanco, Benigno Crespo, Jaime Escribano, Rubén González, Sonia Lozano, Sophie Huss, Angel Santos-Villarejo, José Julio Martín-Plaza, Alfonso Mendoza, María José Rebollo-Lopez, Modesto Remuiñan-Blanco, José Luis Lavandera, Esther Pérez-Herran, Francisco Javier Gamo-Benito, José Francisco García-Bustos, David Barros, Julia P. Castro, Nicholas Cammack
Fueling Open-Source Drug Discovery: 177 Small-Molecule Leads against Tuberculosis [Full Paper]
ChemMedChem 2013, vol. 8, pp. 313–321

Peter Politzer, Jane S. Murray
Halogen Bonding: An Interim Discussion [Review]
ChemPhysChem 2013, vol. 14, pp. 278–294

Volker Hessel, Dana Kralisch, Norbert Kockmann, Timothy Noël, Qi Wang
Novel Process Windows for Enabling, Accelerating, and Uplifting Flow Chemistry [Review]
ChemSusChem 2013, vol. 6, pp. 746–789

Helena J. Shepherd, Gábor Molnár, William Nicolazzi, Lionel Salmon, Azzedine Bousseksou
Spin Crossover at the Nanometre Scale [Microreview]
Eur. J. Inorg. Chem. 2013, pp. 653–661

Junichiro Yamaguchi, Kei Muto, Kenichiro Itami
Recent Progress in Nickel-Catalyzed Biaryl Coupling [Microreview]
Eur. J. Org. Chem. 2013, pp. 19–30

David Schweinfurth, Naina Deibel, Fritz Weisser, Biprajit Sarkar
Mit Klick zu neuen Liganden [Magazin]
Nachr. Chem. 2011, vol. 59, pp. 937–941
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