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Biotechnology and Bioengineering

Expression of tabersonine 16‐hydroxylase and 16‐hydroxytabersonine‐O‐methyltransferase in Catharanthus roseus hairy roots

Published: 22 November 2017

Author(s): Jiayi Sun, Le Zhao, Zengyi Shao, Jacqueline Shanks, Christie A.M. Peebles

Abstract The monoterpene indole alkaloids vindoline and catharanthine, which are exclusively synthesized in the medicinal plant Catharanthus roseus, are the two important precursors for the production of pharmaceutically important anti‐cancer medicines vinblastine and vincristine. Hairy root culture is an ideal platform for alkaloids production due to its industrial scalability, genetic and chemical stability, and...

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Biotechnology and Bioengineering

Comparison of purification strategies for antibodies used in a broad spectrum host cell protein immunoassay

Published: 22 November 2017

Author(s): Phoebe A. Baldus, Matthew Brown, Richard S. Wright, Jessica A. Campbell, Scott Lute, Brittany Chavez, Kurt Brorson, Ned Mozier

Abstract Host cell proteins (HCPs) are a heterogeneous mixture of impurities that should be minimized in bulk preparations of biotechnologically produced medicines. Immunoassays are commonly used to detect and measure HCPs in therapeutic products, and a successful assay is directly dependent on the quality of the polyclonal antibodies (pAbs) used. These pAbs are enriched from antisera of animals immunized with...

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AIChE Journal

Numerical simulation on flow behavior of twin‐liquid films over a vertical plate with an open window

Published: 22 November 2017

Author(s): Hanguang Xie, Jianguang Hu, Gance Dai

A novel element for gas–liquid contact, a plate with rectangular windows was designed to enhance absorption process. Coexistence and interaction of wall‐bounded films and confined free films named as “twin‐liquid films” were observed on the plate. Volume of fluid (VOF) method was used to simulate its flow behavior. Flow phenomena such as flow around a step‐in, jet impingement, varicose waves, and sinuous waves were observed. Different...

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AIChE Journal

More comprehensive 3D modeling of clay‐like material drying

Published: 22 November 2017

Author(s): M. Heydari, K. Khalili, S. Y. Ahmadi‐Brooghani

Drying process plays an important role in the manufacturing of many products such as ceramic, kitchenware and building materials, some of which have complex three‐dimensional (3D) geometry. To deal with many restrictions found in literatures, a 3D numerical approach was used to describe the drying process of a porous Clay‐like material. The problem investigated involves highly coupled equations considering heat, mass, and mechanical...

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AIChE Journal

A comparative kinetics study of CO 2 absorption into aqueous DEEA/MEA and DMEA/MEA blended solutions

Published: 22 November 2017

Author(s): Wusan Jiang, Xiao Luo, Hongxia Gao, Zhiwu Liang, Bin Liu, Paitoon Tontiwachwuthikul, Xiayi Hu

The kinetics of CO2 absorption into aqueous solutions of N,N‐diethylethanolamine (DEEA), and N,N‐dimethylethanolamine (DMEA), and their blends with monoethanolamine (MEA) have been studied in a stopped‐flow apparatus. The kinetics experiments were carried out at the concentrations of DEEA and DMEA varying from 0.075 to 0.175 kmol/m3, respectively, and that of MEA ranging between 0.0075 and 0.0175 kmol/m3, over the temperature range of 293–313 K. Two...

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Angewandte Chemie International Edition

Are There Carbenes in N‐Heterocyclic Carbene Organocatalysis?

Published: 22 November 2017

Author(s): Sascha Gehrke, Oldamur Hollóczki

Abstract Azolium cations are widely employed in organocatalysis to catalyse highly valuable synthetic processes in the presence of a base. These reactions are called “N‐heterocyclic carbene catalysis”, based on the assumption that they are initiated by the formation of a free carbene through deprotonation, which can then react with the substrates and thereby affect their reactivity to obtain the desired products. However, we herein...

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Angewandte Chemie International Edition

Preparation of Functionalized Diaryl‐ and Diheteroaryllanthanum Reagents by Fast Halogen–Lanthanum Exchange

Published: 22 November 2017

Author(s): Andreas D. Benischke, Lucile Anthore‐Dalion, Guillaume Berionni, Paul Knochel

Abstract Aryl and heteroaryl halides (X=Br, I) undergo a fast and convenient halogen–lanthanum exchange with nBu2LaMe, which leads to functionalized diaryl‐ and diheteroaryllanthanum derivatives. Subsequent trapping reactions with selected electrophiles, such as ketones, aldehydes, or amides, proceeded smoothly at −50 °C in THF, affording polyfunctionalized alcohols and carbonyl derivatives. Kinetic competition experiments revealed a similar...

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Angewandte Chemie International Edition

Cooperative Multifunctional Catalysts for Nitrone Synthesis: Platinum Nanoclusters in Amine‐Functionalized Metal–Organic Frameworks

Published: 22 November 2017

Author(s): Xinle Li, Biying Zhang, Linlin Tang, Tian Wei Goh, Shuyan Qi, Alexander Volkov, Yuchen Pei, Zhiyuan Qi, Chia‐Kuang Tsung, Levi Stanley, Wenyu Huang

Abstract Nitrones are key intermediates in organic synthesis and the pharmaceutical industry. The heterogeneous synthesis of nitrones with multifunctional catalysts is extremely attractive but rarely explored. Herein, we report ultrasmall platinum nanoclusters (PtNCs) encapsulated in amine‐functionalized Zr metal–organic framework (MOF), UiO‐66‐NH2 (Pt@UiO‐66‐NH2) as a multifunctional catalyst in the one‐pot tandem synthesis of nitrones. By...

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Angewandte Chemie

Treten in der N‐heterozyklischen Carben‐Organokatalyse wirklich Carbene auf?

Published: 22 November 2017

Author(s): Sascha Gehrke, Oldamur Hollóczki

Abstract In der Organokatalyse werden häufig Azolium‐Kationen in Anwesenheit einer Base eingesetzt, um wertvolle Syntheseschritte zu realisieren. Aufgrund der Annahme, dass durch Deprotonierung des Kations ein freies Carben entsteht, welches mit dem Substrat reagiert und somit dessen Reaktivität entscheidend beeinflusst, werden Reaktionen dieses Types als N‐heterozyklische Carben‐Katalyse bezeichnet. Wir können hier jedoch zeigen,...

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Angewandte Chemie

Herstellung von funktionalisierten Diaryl‐ und Diheteroaryl‐Lanthanreagenzien mittels eines schnellen Halogen‐Lanthan‐Austausches

Published: 22 November 2017

Author(s): Andreas D. Benischke, Lucile Anthore‐Dalion, Guillaume Berionni, Paul Knochel

Abstract Ausgehend von Aryl‐ und Heteroarylhalogeniden (X=Br, I) erlaubt nBu2LaMe einen schnellen und praktischen Halogen‐Lanthan‐Austausch, welcher zu funktionalisierten Diaryl‐ und Diheteroaryl‐Lanthanderivaten führt. Deren anschließende Abfangreaktionen mit ausgewählten Elektrophilen, wie Ketonen, Aldehyden oder Amiden, gelangen reibungslos bei −50 °C in THF, und polyfunktionalisierte Alkohole und Carbonylderivate wurden erhalten. Kinetische...

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

October 2017

 


Bryan D. Ellis, Christopher D. Vanderwal
Hughes and Gleason's Virosaine A-Appreciating the Art in Synthesis [Highlight]
Angew. Chem. Int. Ed. 2017, vol. 56, p. 13940

Klaus F. Wagenbauer, Floris A. S. Engelhardt, Evi Stahl, Vera K. Hechtl, Pierre Stömmer, Fabian Seebacher, Letizia Meregalli, Philip Ketterer, Thomas Gerling, Hendrik Dietz
How We Make DNA Origami [Concept]
ChemBioChem 2017, vol. 18, p. 1873

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

Matthias Ducci
Geheimtinten [Artikel]
Chem. Unserer Zeit 2017, vol. 51, p. 228

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

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

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

Ekkehard Schwab, Sebastian Schiebahn, Georg Schaub, Martin Reuter, Konstantin Räuchle, Ludolf Plass, Marcell Peuckert, Anja Metzelthin, Falko Mahlendorf, Wolfram Koch, Renate Hoer, Angelika Heinzel, Sigmar Bräuninger, Martin Bertau, Christian Beilmann, Florian Ausfelder, Ferdi Schüth, Detlef Stolten, Gisa Teßmer, Kurt Wagemann, Karl-Friedrich Ziegahn
Energiespeicherung als Element einer sicheren Energieversorgung [Übersichtsbeitrag]
Chem. Ing. Tech. 2015, vol. 87, p. 17

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

Robert A. W. Dryfe, Briony Setterfield-Price, Joanne Tory, František Hartl
[M(CO)4(2,2′‐bipyridine)] (M=Cr, Mo, W) Complexes as Efficient Catalysts for Electrochemical Reduction of CO2 at a Gold Electrode [Communication]
ChemElectroChem 2015, vol. 2, p. 213

Yinghui Xue, Qin Zhang, Tao Zhang, Lei Fu
Black Phosphorus: Properties, Synthesis, and Applications in Energy Conversion and Storage [Focus Review]
ChemNanoMat 2017, vol. 3, p. 352

Flavia Izzo, Martina Schäfer, Robert Stockman, Ulrich Lücking
A New, Practical One-Pot Synthesis of Unprotected Sulfonimidamides by Transfer of Electrophilic NH to Sulfinamides [Full Paper]
Chem. Eur. J. 2017, vol. 23, p. 15189

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

Andrea Gualandi, Luca Mengozzi, Pier Giorgio Cozzi
Iron-Promoted Radical Reactions: Current Status and Perspectives [Focus Review]
Asian J. Org. Chem. 2017, vol. 6, p. 1160

Paramita Mukherjee, Martin Pettersson, Jason K. Dutra, Longfei Xie, Christopher W. am Ende
Trifluoromethyl Oxetanes: Synthesis and Evaluation as a tert-Butyl Isostere [Communication]
ChemMedChem 2017, vol. 12, p. 1574

David D. Evanoff, George Chumanov
Synthesis and Optical Properties of Silver Nanoparticles and Arrays [Minireview]
ChemPhysChem 2005, vol. 6, p. 1221

Jonathan E. Barnsley, Bethany A. Lomax, James R. W. McLay, Christopher B. Larsen, Nigel T. Lucas, Keith C. Gordon
Flicking the Switch on Donor-Acceptor Interactions in Hexaazatrinaphthalene Dyes: A Spectroscopic and Computational Study [Article]
ChemPhotoChem 2017, vol. 1, p. 432

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

Francesca Leonelli, Marinella Capuzzi, Vincenzo Calcagno, Pietro Passacantilli, Giovanni Piancatelli
Stereoselective Michael‐Type Addition of Organocopper Reagents to Enones Derived from Glycals in the Synthesis of 2‐Phosphono‐α‐C‐Glycosides [Short Communication]
Eur. J. Org. Chem. 2005, p. 2671

Biochemische und molekularbiologische Analytik [Bericht]
Lebensmittelchemie 2017, vol. 71, p. 13

Maren Bulmahn
Titandioxid: schön oder schädlich [Industrie & Technik]
Nachr. Chem. 2017, vol. 65, p. 1008

Dominique Rosenberg, Svenja Pansegrau, Mirco Wachholz, Alexander Rehling, Maike Busker, Walter Jansen
Redox-Flow-Batterien - Organische Batterien mit Zukunftsperspektiven [Artikel]
CHEMKON 2017, vol. 24, p. 325

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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