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Articles from Wiley

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The latest papers in ChemPubSoc Europe
Aggiornato: 8 settimane 3 giorni fa

In silico Complexes of Amino Acids and Diamondoids

26 luglio, 2019 - 00:00

Tiny diamond-like molecules can selectively bind to amino acid units. This binding gives rise to amino-acid-specific optical-absorption and charge-transfer properties that enable the detection of the amino acids. In this respect, the diamond-like molecules can be used to enhance the efficiency of biosensing devices.

[Communications]
Dr. Pouya Partovi-Azar, Dr. Chandra Shekar Sarap, Prof. Dr. Maria Fyta
doi.org/10.1002/cphc.201900394

Cleavable Unimolecular Photoinitiators Based on Oxime-Ester Chemistry for Two-Photon Three-Dimensional Printing

26 luglio, 2019 - 00:00

Hot off the press: Conjugated coumarin-based oxime-esters as unimolecular photoinitiators can efficiently induce photopolymerization for two-photon three-dimensional printing.

[Communications]
Wanwan Qiu, Peng Hu, Junzhe Zhu, Prof. Dr. Ren Liu, Dr. Zhiquan Li, Zhiyong Hu, Prof. Dr. Qidai Chen, Dr. Kurt Dietliker, Prof. Dr. Robert Liska
doi.org/10.1002/cptc.201900164

A Lithium-Free Energy-Storage Device Based on an Alkyne-Substituted-Porphyrin Complex

26 luglio, 2019 - 00:00

Morphology matters: In a Li-free battery cell with organic electrodes consisting of a tetra-acetenyl-substituted porphyrin, the nanobrick- and nanoribbon-morphology porphyrin samples show higher rate cyclability than the nanosheet sample. The organic electrode material demonstrated a specific power density of 14 kW kg−1 and excellent rechargeability.

[Communications]
Dr. Zhi Chen, Dr. Ping Gao, Dr. Wu Wang, Dr. Svetlana Klyatskaya, Dr. Zhirong Zhao-Karger, Dr. Di Wang, Prof. Dr. Christian Kübel, Dr. Olaf Fuhr, Prof. Dr. Maximilian Fichtner, Prof. Dr. Mario Ruben
doi.org/10.1002/cssc.201901541

Realization of High Capacity and Cycling Stability in Pb-Free A<sub>2</sub>CuBr<sub>4</sub> (A=CH<sub>3</sub>NH<sub>3</sub>/Cs, 2 D/3 D) Perovskite-Based Li-Ion Battery Anodes

26 luglio, 2019 - 00:00

Lead it go: Lead-free Cu-based 2 D and 3 D hybrid and inorganic perovskites (A2CuBr4; A=CH3NH3 or Cs) are examined as anode materials in Li-ion batteries. A high reversible capacity of 630 mAh g−1 is realized in the 2 D hybrid perovskite at 100 mA g−1, and a good reversible capacity of 420 mAh g−1 is also obtained for the 3 D perovskites case.

[Communications]
Dr. Padmini Pandey, Dr. Neha Sharma, Reena A. Panchal, Prof. S. W. Gosavi, Prof. Satishchandra Ogale
doi.org/10.1002/cssc.201900959

VS<sub>4</sub>-Decorated Carbon Nanotubes for Lithium Storage with Pseudocapacitance Contribution

26 luglio, 2019 - 00:00

Superior storage: VS4 nanoplates tightly bound to carbon nanotubes (CNTs) demonstrate pseudocapacitance-assisted lithium storage. The effective coupling between VS4 and CNTs ensures fast electron transfer and high stability. The VS4/CNTs anode exhibits high capacity, superior cycling stability, and good rate capability and indicates the potential application of metal sulfides with pseudocapacitive contribution in lithium-ion batteries.

[Full Papers]
Sen Wang, Wenjun Ma, Xinyue Zang, Dr. Linzheng Ma, Lin Tang, Dr. Jinxue Guo, Dr. Qingyun Liu, Dr. Xiao Zhang
doi.org/10.1002/cssc.201901412

Binuclear Cu(I) and Mn(0) Complexes with a Tridentate Pyridine-NHC-Phosphane Ligand in a µ-κ<sup>2</sup><i>Ĉ,N</i>-M;κ<sup>1</sup><i>P</i>-M Coordination Mode

26 luglio, 2019 - 00:00

Binuclear transition metal complexes bearing pyridine-NHC-phosphane ligand in bridging µ-κ2Ĉ,N-M;κ1P-M coordination mode were prepared in good yields. The complexes were fully characterized by spectroscopic and X-ray diffraction techniques.

[Full Papers]
Jérémy Willot, Noël Lugan, Dmitry A. Valyaev
doi.org/10.1002/ejic.201900628

Nickel Carbodicarbene Catalyzes Kumada Cross-Coupling of Aryl Ethers with Grignard Reagents through C-O Bond Activation

26 luglio, 2019 - 00:00

Nickel carbodicarbene catalyzes cross-coupling reactions between aryl ethers and Grignard reagents to afford biaryl compounds through C-O bond cleavage. The method shows broad functional group tolerance for naphthyl methyl ethers, anisoles and Grignard reagents.

[Full Papers]
Ram Ambre, Hsuan Yang, Wen-Ching Chen, Glenn P. A. Yap, Titel Jurca, Tiow-Gan Ong
doi.org/10.1002/ejic.201900692

Synthesis of Chiral Tetrahydrofuran Building Blocks from Pantolactones: Application in the Synthesis of Empagliflozin and Amprenavir Analogs

26 luglio, 2019 - 00:00

Chiral 4,4-dimethyl tetrahydrofurans were synthesized using a chiral pool approach starting from both pantolactones. The synthesized building blocks are substituted with azide, amine, or alcohol groups making them interesting for applications in medicinal chemistry. Two of the synthesized building blocks were utilized for the synthesis of new analogs of amprenavir (protease inhibitor - anti HIV) and empagliflozin (SGLT2 inhibitor - anti-diabetic).

[Communications]
Paresh R. Athawale, Neeta Kumari, Monica R. Dandawate, K. Kashinath, D. Srinivasa Reddy
doi.org/10.1002/ejoc.201900718

Dehydrative Coupling of Benzylic Alcohols Catalyzed by Brønsted Acid/Lewis Base

26 luglio, 2019 - 00:00

A combination of Brønsted acid and Lewis base catalyses two dehydrative transformations of benzylic alcohols: homocoupling and hydroarylation.

[Communications]
Marlene Böldl, Ivana Fleischer
doi.org/10.1002/ejoc.201900965

Synthesis and Characterization of Azine-[5]Helicene Hybrids

26 luglio, 2019 - 00:00

A systematic study on the synthesis and properties of novel azine-[5]helicene hybrids is reported. To discern the effect of merging an azine moiety within a helical skeleton, the X-ray structures, UV/Vis absorption spectra, and cathodic and anodic electrochemistry of the helicene hybrids were investigated and compared to that of the parent [5]helicene.

[Full Papers]
Anna V. Gulevskaya, Daria I. Tonkoglazova, Andrey S. Guchunov, Alexander D. Misharev
doi.org/10.1002/ejoc.201900818

Valorisation of Cashew Nut Shell Liquid Phenolics in the Synthesis of UV Absorbers

26 luglio, 2019 - 00:00

The synthesis of aromatic UV absorbers from the bio-renewables, cardanol and anacardic acid is described

[Full Papers]
Kennedy J. Ngwira, Jonas Kühlborn, Quintino A. Mgani, Charles B. de Koning, Till Opatz
doi.org/10.1002/ejoc.201900743

Cu-Mediated Synthesis of Indolines and Dihydroisoquinolinones through Arylperfluoroalkylation of Unactivated Alkenes

26 luglio, 2019 - 00:00

The copper-mediated fluroalkylation/cyclization of N-allyl anilines has been described with unactivated double bonds as the radical acceptor. The reaction provides an efficient and direct access to 3-fluoroalkyl indolines in moderate to good yields. This protocol combines a simple experimental procedure with low-costing fluoroalkylated sources and excellent functional group tolerance.

[Full Papers]
Dandan Li, Yan Wang, Zhenzhen Jia, Zhaocheng Ou, Yongrui Dong, Cunjie Lv, Guangbin Fu, Deqiang Liang
doi.org/10.1002/ejoc.201900680

Asymmetric Organocatalytic Conjugate Addition of Electron-Rich Phenols and 1,3-Dicarbonyls to Arylsulfonyl Indoles in an Oil-Water Biphasic System

26 luglio, 2019 - 00:00

The asymmetric conjugate addition of electron-rich phenols and 1,3-dicarbonyls with arylsulfonyl indoles catalyzed by bifunctional organocatalysts have been established. The chiral 3,3-disubstituted oxindoles derivatives were obtained in good to high yields (up to 99 % yield) with high enantioselectivies (up to 98 % ee). This study showed that oil-water biphasic system contributed to the high efficiency and stereoselectivity.

[Full Papers]
Jeng-Liang Han, Yu-Ting Liao, Chia-Hao Chang
doi.org/10.1002/ejoc.201900962

The Interconnection of Two Positive Charges by Conjugation and Cross-Conjugation in Bis-Quinolinium Ethynyls

26 luglio, 2019 - 00:00

Series of diquinolinium salts separated by spacers were prepared which possess cationic charges in conjugation and cross-conjugation as well as combinations thereof. The spectroscopic differences (13C NMR, IR, Raman, UV/Vis) of 2,2-, 3,3-, 4,4-, 3,2- and 3,4-interconnections of positive charges are studied experimentally and by DFT calculations.

[Full Papers]
Sviatoslav Batsyts, Eike G. Hübner, Jan C. Namyslo, Andreas Schmidt
doi.org/10.1002/ejoc.201900816

<i>N</i>-[ω-(Purin-6-yl)aminoalkanoyl] Derivatives of Chiral Heterocyclic Amines as Promising Anti-Herpesvirus Agents

26 luglio, 2019 - 00:00

Novel purine and 2-aminopurine conjugates with chiral heterocyclic amines attached at C-6 via ω-aminoalkanoyl fragment were synthesized. The obtained compounds exhibited inhibitory activity against both herpes simplex virus type 1 (HSV-1) and acyclovir-resistant HSV-1 strains. Anti-herpesvirus activity of the synthesized compounds depends on their stereo configuration.

[Full Papers]
Victor P. Krasnov, Vera V. Musiyak, Olga A. Vozdvizhenskaya, Georgiy A. Galegov, Valeria L. Andronova, Dmitry A. Gruzdev, Evgeny N. Chulakov, Alexey Yu. Vigorov, Marina A. Ezhikova, Mikhail I. Kodess, Galina L. Levit, Valery N. Charushin
doi.org/10.1002/ejoc.201900727

ATP Inhibits the Transcription Factor STAT5b

25 luglio, 2019 - 00:00

A different side of ATP: ATP is the primary energy carrier of the cell and a co-substrate for protein kinases. Unexpectedly, ATP also inhibits the protein-protein interaction domain of the tumor-relevant transcription factor STAT5b at physiologically relevant concentrations.

[Communications]
Angela Berg, Bianca Sperl, Prof. Dr. Thorsten Berg
doi.org/10.1002/cbic.201900173

Transient <i>N</i><sup>4</sup>-Acyl-DNA Protection against Cleavage by Restriction Endonucleases

25 luglio, 2019 - 00:00

Programmable defences: N4-Acyl-deoxycytidine triphosphates are efficiently incorporated into DNA and provide transient protection to the modified DNA against cleavage by restriction endonucleases. If necessary, N4-acylated DNA can be easily demodified through a one-pot procedure, resulting in a fully natural DNA that is no longer resistant to restriction enzymes.

[Full Papers]
Jevgenija Jakubovska, Dr. Daiva Tauraitė, Prof. Dr. Rolandas Meškys
doi.org/10.1002/cbic.201900280

Physicochemical Characterization of Polymer-Stabilized Coacervate Protocells

25 luglio, 2019 - 00:00

It′s a lot like life: The physicochemical characterization of polymer-stabilized coacervate protocells (such as macromolecular diffusion and buffering capacity within the core, structure and permeability of the polymer membrane) were explored, thus establishing this system as an attractive platform for investigating biochemical processes and enzymatic reactions in stable, tunable, and increasingly cell-like environments.

[Full Papers]
Dr. N. Amy Yewdall, Bastiaan C. Buddingh, Wiggert J. Altenburg, Suzanne B. P. E. Timmermans, Daan F. M. Vervoort, Prof. Loai K. E. A. Abdelmohsen, Dr. Alexander F. Mason, Prof. Jan C. M. van Hest
doi.org/10.1002/cbic.201900195

Simultaneous High Conversion and Selectivity in Olefin Oxidation with Oxygen Through Solid/Liquid/Gas Three-Phase Interface Design

25 luglio, 2019 - 00:00

O, O, O! Simultaneous enhancement of conversion and selectivity in olefin oxidation with oxygen can be achieved under ambient pressure by solid/liquid/gas three-phase interface design through creating superaerophilic surface.

[Communications]
Zhaohua Li, Dr. Changyan Cao, Zhongpeng Zhu, Prof. Lei Jiang, Prof. Weiguo Song
doi.org/10.1002/cctc.201900918

Thiamine Diphosphate Dependent KdcA-Catalysed Formyl Elongation of Aldehydes

25 luglio, 2019 - 00:00

Mighty enzymes: Nucleophilic and electrophilic formyl elongation of aromatic and aliphatic aldehydes is catalysed by thiamine diphosphate dependent 2-keto acid decarboxylase. The presence of unstable aromatic mandelic aldehyde in aqueous solution could be proved indirectly via LC-MS/MS analysis.

[Communications]
Philipp Germer, Dr. Ekaterina Gauchenova, Dr. Lydia Walter, Prof. Dr. Michael Müller
doi.org/10.1002/cctc.201900712

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