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Articles from Wiley

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The latest chemistry from ChemPubSoc Europe and Wiley-VCH
Aggiornato: 2 settimane 2 giorni fa

Enhancing Charge Separation and Photocatalytic Activity of Cubic SrTiO<sub>3</sub> with Perovskite-Type Materials MTaO<sub>3</sub> (M=Na, K) for Environmental Remediation: A First-Principles Study

1 agosto, 2017 - 00:00

 A First‐Principles Study

A bifunctional MTaO3/SrTiO3(010) (M=Na, K) heterostructure photocatalyst was designed for H2 production and photocatalytic degradation of pollutants using the hybrid HSE06 method. Based on the band alignment results, the MTaO3/SrTiO3(010) heterostructure are highly efficient for energy conversion and pollutants degradation.

[Full Paper]
Francis Opoku, Krishna Kuben Govender, Cornelia Gertina Catharina Elizabeth van Sittert, Penny Poomani Govender
ChemistrySelect, August 01, 2017, https://doi.org/10.1002/slct.201700886 Read article

A Domino Approach for the Synthesis of <i>α</i>-Iodo-<i>β</i>-dicarbonyl Compounds from <i>α</i>-Epoxycarbonyls

1 agosto, 2017 - 00:00

A Domino Approach for the Synthesis of &#x3B1;‐Iodo‐&#x3B2;‐dicarbonyl Compounds from &#x3B1;‐Epoxycarbonyls

First approach for the synthesis of &#x3B1;-iodo-&#x3B2;-dicarbonyl compounds from &#x3B1;-epoxycarbonyls was developed. Various functional groups are well tolerated under the present reaction conditions. The potential synthetic applicability of this method was investigated on a gram scale using the model reaction. The advantages of the present method are operational simplicity, short reaction time, general applicability, good tolerance to scale-up synthesis, as well as readily available reagents.

[Communication]
Sachinta Mahato, Rana Chatterjee, Sougata Santra, Grigory V. Zyryanov, Alakananda Hajra, Adinath Majee
ChemistrySelect, August 01, 2017, https://doi.org/10.1002/slct.201700867 Read article

Front Cover: Synthesis of 6-Azaspiro[4.3]alkanes: Innovative Scaffolds for Drug Discovery (Eur. J. Org. Chem. /2017)

1 agosto, 2017 - 00:00

 Innovative Scaffolds for Drug Discovery (Eur. J. Org. Chem. /2017)

The cover picture shows novel scaffolds for drug discovery, 6 azaspiro[4.3]alkanes, which have been synthesized by Enamine chemists (Ukraine, Kyiv). The synthesis starts from common four-membered-ring ketones, such as cyclobutanone, thienone, or N-Boc-azetidinone, and includes only two chemical steps. The key transformation is the reaction between electron-deficient exocyclic alkenes and in situ generated N-benzyl azomethine ylide. The high potential of the developed method was demonstrated by the novel synthesis of the central core of the known antibacterial agent DV-7751. Details are discussed in the Full Paper by P. K. Mykhailiuk et al. on page -- ff (https://doi.org/10.1002/ejoc.201700536).

[Front Cover]
Bohdan A. Chalyk, Andrei A. Isakov, Maryna V. Butko, Kateryna V. Hrebeniuk, Olena V. Savych, Olexandr V. Kucher, Konstantin S. Gavrilenko, Tetiana V. Druzhenko, Vladimir S. Yarmolchuk, Sergey Zozulya, Pavel K. Mykhailiuk
Eur. J. Org. Chem., August 01, 2017, https://doi.org/10.1002/ejoc.201701057 Read article

A Mechanochemical-Assisted Oxidation of Amines to Carbonyl Compounds and Nitriles

1 agosto, 2017 - 00:00

A Mechanochemical‐Assisted Oxidation of Amines to Carbonyl Compounds and Nitriles

[Full Paper]
Silvia Gaspa, Andrea Porcheddu, Antonio Valentoni, Sebastiano Garroni, Stefano Enzo, Lidia De Luca
Eur. J. Org. Chem., August 01, 2017, https://doi.org/10.1002/ejoc.201700689 Read article

Front Cover: Application of a Metal-Mediated Base Pair to the Detection of Medicinally Relevant Single Nucleotide Polymorphisms (Eur. J. Inorg. Chem. /2017)

1 agosto, 2017 - 00:00

 Application of a Metal‐Mediated Base Pair to the Detection of Medicinally Relevant Single Nucleotide Polymorphisms (Eur. J. Inorg. Chem. /2017)

The cover picture shows in a figurative sense that molecular beacons can be used to detect medicinally relevant single nucleotide polymorphisms (SNPs). The beacons are depicted by lighthouses and the oligonucleotides containing the SNPs are represented by boats. The study shows how the formation of a metal-mediated base pair involving an artificial nucleoside surrogate finds its application in a biologically relevant context. Details are discussed in the article by B. Jash and J. Müller on page -- ff (https://doi.org/10.1002/ejic.201700665). For more on the story behind the cover research, see the Cover Profile (https://doi.org/10.1002/ejic.201700881).

[Cover Picture]
Biswarup Jash, Jens Müller
Eur. J. Inorg. Chem., August 01, 2017, https://doi.org/10.1002/ejic.201700880 Read article

Iridium Halide Complexes [1,1-X<sub>2</sub>-8-SMe<sub>2</sub>-1,2,8-IrC<sub>2</sub>B<sub>9</sub>H<sub>10</sub>]<sub>2</sub> (X = Cl, Br, I): Synthesis, Reactivity and Catalytic Activity

1 agosto, 2017 - 00:00

 Synthesis, Reactivity and Catalytic Activity

Iridium halide complexes [1,1-X2-8-SMe2-1,2,8-IrC2B9H10]2 (X = Cl, Br, I) were synthesized by reaction of the cyclooctadiene derivative 1-cod-8-SMe2-1,2,8-IrC2B9H10 with anhydrous hydrohalic acids HX. These complexes have proven to be effective catalysts for the dimerization of alkynes and the reductive amination of aldehydes and ketones.

[Full Paper]
Alexander P. Molotkov, Mikhail M. Vinogradov, Alexey P. Moskovets, Olga Chusova, Sergey V. Timofeev, Vasilii A. Fastovskiy, Yulia V. Nelyubina, Alexander A. Pavlov, Denis A. Chusov, Dmitry A. Loginov
Eur. J. Inorg. Chem., August 01, 2017, https://doi.org/10.1002/ejic.201700498 Read article

Synthesis, Structure, and Reactivity of Carboranyl-Supported Germylenes: Approaching Germanones

1 agosto, 2017 - 00:00

 Approaching Germanones

[Full Paper]
Hao Wang, Zuowei Xie
Eur. J. Inorg. Chem., August 01, 2017, https://doi.org/10.1002/ejic.201700496 Read article

Mapping the Free Energy of Lithium Solvation in the Protic Ionic Liquid Ethylammonuim Nitrate: A Metadynamics Study

1 agosto, 2017 - 00:00

 A Metadynamics Study

The Back Cover picture shows the free energy landscape for Li+ solvation in ethyleammonuim nitrate (EAN). Using first-principle simulations aided by a metadynamics approach, the solvation and transport of lithium in EAN was investigated. We identified different lithium solvation scenarios that were explored by the metadynamics and quantified their free energy barriers. The lowest free-energy barrier appears to be consistent with what has been observed experimentally. More details can be found in the Full Paper by Kachmar et al. (DOI: 10.1002/cssc.201700510).

[Cover Picture]
Ali Kachmar, Marcelo Carignano, Teodoro Laino, Marcella Iannuzzi, Jürg Hutter
ChemSusChem, August 01, 2017, https://doi.org/10.1002/cssc.201701339 Read article

Design of Iron(II) Phthalocyanine-Derived Oxygen Reduction Electrocatalysts for High-Power-Density Microbial Fuel Cells

1 agosto, 2017 - 00:00

Design of Iron(II) Phthalocyanine‐Derived Oxygen Reduction Electrocatalysts for High‐Power‐Density Microbial Fuel Cells

I've got the power: Iron(II) phthalocyanine (FePc) is deposited onto two different carbonaceous supports. Rotating ring disk electrode (RRDE) analysis and electrochemical measurements in microbial fuel cells (MFCs) show that carbon black (Black Pearls)-supported FePc (Fe-BP(N)) exhibits the highest performance. A high maximum power density is achieved.

[Full Paper]
Carlo Santoro, Rohan Gokhale, Barbara Mecheri, Alessandra D'Epifanio, Silvia Licoccia, Alexey Serov, Kateryna Artyushkova, Plamen Atanassov
ChemSusChem, August 01, 2017, https://doi.org/10.1002/cssc.201700851 Read article

Monitoring Complex Formation by Relaxation-Induced Pulse Electron Paramagnetic Resonance Distance Measurements

1 agosto, 2017 - 00:00

Monitoring Complex Formation by Relaxation‐Induced Pulse Electron Paramagnetic Resonance Distance Measurements

Bound to spin: Relaxation induced dipolar pulse electron paramagnetic resonance allows nanometer distance measurements between paramagnetic centers, particularly metals. Here it is shown that also the degree of the ligand–metal binding can be quantified if certain pitfalls are circumvented using a spin labeled terpyridine binding to CuII ions.

[Communication]
Angeliki Giannoulis, Maria Oranges, Bela E. Bode
ChemPhysChem, August 01, 2017, https://doi.org/10.1002/cphc.201700666 Read article

Supramolecular Architecture of Substituted Tetraphenyl-carbo-benzenes from the Energetic Viewpoint

1 agosto, 2017 - 00:00

Supramolecular Architecture of Substituted Tetraphenyl‐carbo‐benzenes from the Energetic Viewpoint

Essential interactions: Analysis of pairwise interaction energies allows many weak intermolecular interactions to be replaced by 10–14 vectors and enables the crystal packing of macromolecules to be visualised clearly.

[Article]
Svitlana V. Shishkina, Viktoriya V. Dyakonenko, Oleg V. Shishkin, Valérie Maraval, Remi Chauvin
ChemPhysChem, August 01, 2017, https://doi.org/10.1002/cphc.201700584 Read article

Dynamic Nuclear Polarization Fast Field Cycling Method for the Selective Study of Molecular Dynamics in Block Copolymers

1 agosto, 2017 - 00:00

Dynamic Nuclear Polarization Fast Field Cycling Method for the Selective Study of Molecular Dynamics in Block Copolymers

Selective dynamic nuclear polarization: Spin-lattice relaxation dispersion measurements of the dynamic nuclear polarization (DNP)-enhanced signal of triblock copolymers are performed and lead to improved signal-to-noise ratios that allow the site-specific separation of relaxation times (see picture) and their dependence on the Larmor frequency with a higher accuracy.

[Article]
Bulat Gizatullin, Oliver Neudert, Siegfried Stapf, Carlos Mattea
ChemPhysChem, August 01, 2017, https://doi.org/10.1002/cphc.201700539 Read article

Magnetostructural Characterization of Oxalamide Dihalo-Bridged Copper Dimers: Intra- and Interdimer Interactions Studied by Single-Crystal Electron Spin Resonance Spectroscopy

1 agosto, 2017 - 00:00

 Intra‐ and Interdimer Interactions Studied by Single‐Crystal Electron Spin Resonance Spectroscopy

Single and looking: Single-crystal electron spin resonance spectroscopy experiments reveal unusual anisotropic splitting and merging of lines if crystals of newly synthesized dihalo-bridged oxalamide copper(II) dimers rotate in a magnetic field. The observation of this partially resolved intradimer dipolar splitting enables estimation of weak interdimer exchange interactions.

[Article]
Dijana &#x17D;ili&#x107;, Debdeep Maity, Mario Cetina, Kre&#x161;imir Mol&#x10D;anov, Zoran D&#x17E;oli&#x107;, Mirta Herak
ChemPhysChem, August 01, 2017, https://doi.org/10.1002/cphc.201700433 Read article

A Small-Molecule Inhibitor of Prion Replication and Mutant Prion Protein Toxicity

1 agosto, 2017 - 00:00

A Small‐Molecule Inhibitor of Prion Replication and Mutant Prion Protein Toxicity

Into the fold: Prion diseases are neurodegenerative disorders characterized by the accumulation in the brain of a self-replicating, misfolded isoform (PrPSc) of the cellular prion protein (PrPC). No therapies are available for these pathologies. We capitalized on previously described cell-based assays to screen a library of small molecules, and identified 55, a compound capable of counteracting both prion replication and toxicity. Compound 55 may represent the starting point for the development of a completely new class of therapeutics for prion diseases.

[Communication]
Tania Massignan, Valeria Sangiovanni, Silvia Biggi, Claudia Stincardini, Saioa R. Elezgarai, Giulia Maietta, Ivan A. Andreev, Nina K. Ratmanova, Dmitry S. Belov, Evgeny R. Lukyanenko, Grigory M. Belov, Maria Letizia Barreca, Andrea Altieri, Alexander V. Kurkin, Emiliano Biasini
ChemMedChem, August 01, 2017, https://doi.org/10.1002/cmdc.201700302 Read article

New Approach to 1,4-Benzoxazin-3-ones by Electrochemical C−H Amination

1 agosto, 2017 - 00:00

New Approach to 1,4‐Benzoxazin‐3‐ones by Electrochemical C−H Amination

Simple electrified access to benzoxazinones starting from readily accessible methyl phenoxyacetetes was established. Similar benzoxazine compounds occur naturally in gramineous plants such as wheat, maize, rye, or rice. The electrochemical amination protocol furnishes, upon aminolysis, the heterocyclic benzoxazinone motif. The simple electric wires underline the easy-to-perform protocol. More information can be found in the Communication by S. R. Waldvogel et al. (DOI: 10.1002/chem.201701979).

[Cover Picture]
Lars Julian Wesenberg, Sebastian Herold, Akihiro Shimizu, Jun-ichi Yoshida, Siegfried R. Waldvogel
Chem. Eur. J., August 01, 2017, https://doi.org/10.1002/chem.201703421 Read article

Biphasic Liquid Crystal and the Simultaneous Measurement of Isotropic and Anisotropic Parameters by Spatially Resolved NMR Spectroscopy

1 agosto, 2017 - 00:00

Biphasic Liquid Crystal and the Simultaneous Measurement of Isotropic and Anisotropic Parameters by Spatially Resolved NMR Spectroscopy

A moderately concentrated solution of a helically chiral polyisonitrile forms a stable two-phase system in CDCl3 with the dense phase being close to isotropic and the less dense layer forming a completely anisotropic lyotropic liquid crystalline phase. This enables the enantiodifferentiating measurement of isotropic and anisotropic NMR parameters from a single sample by novel spatially resolved NMR methods. More information can be found in the Full Paper by M. Reggelin, B. Luy et al. (DOI: 10.1002/chem.201702126).

[Cover Picture]
Malin Reller, Svenja Wesp, Martin R. M. Koos, Michael Reggelin, Burkhard Luy
Chem. Eur. J., August 01, 2017, https://doi.org/10.1002/chem.201703362 Read article

CuAAC in a Distal Pocket: Metal Active-Template Synthesis of Strapped-Porphyrin [2]Rotaxanes

1 agosto, 2017 - 00:00

 Metal Active‐Template Synthesis of Strapped‐Porphyrin [2]Rotaxanes

Copper and zinc work in tandem in a metal-mediated click reaction that is promoted by the presence of more than one metal in a ditopic macrocycle. The successful formation of a triazole by alkyne–azide cyclization in the pocket of a macrobicyclic phenanthroline-strapped porphyrin generates a rotaxane in which the metal bound in the porphyrin controls the position of the axle. The cover picture illustrates the joint effort of the Japanese and French groups in this scientific investigation and cultural exchange. More information can be found in the Communication by T. Hayashi, J. Weiss et al. (DOI: 10.1002/chem.201702553).

[Cover Picture]
Yuta Miyazaki, Christophe Kahlfuss, Ayumu Ogawa, Takashi Matsumoto, Jennifer A. Wytko, Koji Oohora, Takashi Hayashi, Jean Weiss
Chem. Eur. J., August 01, 2017, https://doi.org/10.1002/chem.201703336 Read article

Aggregation-Induced Emission (AIE) Fluorophore Exhibits a Highly Ratiometric Fluorescent Response to Zn<sup>2+</sup> in vitro and in Human Liver Cancer Cells

1 agosto, 2017 - 00:00

Aggregation‐Induced Emission (AIE) Fluorophore Exhibits a Highly Ratiometric Fluorescent Response to Zn2+ in vitro and in Human Liver Cancer Cells

A new AIE-active fluorophore that exhibits a rapid and highly selective ratiometric response to Zn2+ with a limit of detection (LOD) up to 2.6 nm is reported. Furthermore, the fluorophore was successfully applied in ratiometric imaging of intracellular Zn2+ in human hepatoma cancer cells by fluorescent confocal microscopy. More information can be found in the Full Paper by W. Gong, M. Watkinson, G. Ning et al. (DOI: 10.1002/chem.201701948).

[Cover Picture]
Hassan Mehdi, Weitao Gong, Huimin Guo, Michael Watkinson, Hua Ma, Ali Wajahat, Guiling Ning
Chem. Eur. J., August 01, 2017, https://doi.org/10.1002/chem.201703192 Read article

Soluble Platinum Nanoparticles Ligated by Long-Chain N-Heterocyclic Carbenes as Catalysts

1 agosto, 2017 - 00:00

Soluble Platinum Nanoparticles Ligated by Long‐Chain N‐Heterocyclic Carbenes as Catalysts

Remarkably, only the Pt NPs ligated by a bulky ligand were active for the hydroboration of alkynes.” Read more about the story behind the cover in the Cover Profile and about the research itself on page ▪▪ ff. (DOI: 10.1002/chem.201702288).

[Cover Profile]
Luis M. Martínez-Prieto, Lena Rakers, Angela M. López-Vinasco, Israel Cano, Yannick Coppel, Karine Philippot, Frank Glorius, Bruno Chaudret, Piet W. N. M. van Leeuwen
Chem. Eur. J., August 01, 2017, https://doi.org/10.1002/chem.201703189 Read article

Tunable Ligand Effects on Ruthenium Catalyst Activity for Selectively Preparing Imines or Amides by Dehydrogenative Coupling Reactions of Alcohols and Amines

1 agosto, 2017 - 00:00

Tunable Ligand Effects on Ruthenium Catalyst Activity for Selectively Preparing Imines or Amides by Dehydrogenative Coupling Reactions of Alcohols and Amines

Ligand-controlled selective dehydrogenative coupling reactions of alcohols and amines were achieved by using ruthenium complexes bearing P−N bidentate ligands with zinc salts. A wide variety of alcohols and amines were used in the present systems to obtain the corresponding imines and amides. In addition, a ruthenium complex as the catalyst precursor was successfully isolated and reaction mechanisms are proposed based on experiments, including a time-course study, Hammett plot, and measurements of the kinetic isotope effect. More information can be found in the Full Paper by K. Mashima et al. (DOI: 10.1002/chem.201701342).

[Cover Picture]
Takafumi Higuchi, Risa Tagawa, Atsuhiro Iimuro, Shoko Akiyama, Haruki Nagae, Kazushi Mashima
Chem. Eur. J., August 01, 2017, https://doi.org/10.1002/chem.201702953 Read article

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