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Articles from Wiley

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The latest chemistry from ChemPubSoc Europe and Wiley-VCH
Aggiornato: 10 settimane 5 giorni fa

Synthesis of <i>N,N</i>-Bis-Sulfonylated and <i>N</i>-Alkyl-<i>N</i>-Sulfonylated G1 Dendrimers <i>via</i> Click Reaction: Application of Thiocarbamide based Cu<sup>I</sup> Catalysts

4 agosto, 2017 - 00:00

 Application of Thiocarbamide based CuI Catalysts

Designing of thiocarbamide based CuI catalysts and their application in synthesis of 1,2,3-triazole based N,N-bis-sulfonylated and N-alkyl-N-sulfonylated G1 dendrimers have been reported. The designed catalysts showed the better catalytic activity under liquid assisted grinding (LAG) using 0.05 - 0.06 mole percent. Yield of dendrimers was observed from good to excellent in short reaction time period.

[Full Paper]
Shaziya Khanam, Sunil K. Pandey, Sunil K. Rai, Deepshikha Verma, Jerry P. Jasinski, Seema Pratap, Ashish K. Tewari
ChemistrySelect, August 04, 2017, https://doi.org/10.1002/slct.201701591 Read article

Facile Hydrothermal Synthesis of Sn-Mn Mixed Oxide Nano-rods with Exposed (110) Facets and Remarkable Catalytic Performance

4 agosto, 2017 - 00:00

Facile Hydrothermal Synthesis of Sn‐Mn Mixed Oxide Nano‐rods with Exposed (110) Facets and Remarkable Catalytic Performance

Solid Solution Rods: Though mono-metal oxides exposed special facets can be easily prepared via various approaches, the synthesis of mixed metal oxides exposed special facets are still a challenge to date. In this work, Sn−Mn mixed oxide nano-rods exposed (110) facet have been successfully synthesized by a facile one step hydrothermal method for the first time and showed superior CO catalytic oxidation performance.

[Full Paper]
Honggen Peng, Li Zhang, Qi Sun, Jiating Shen, Xianglan Xu, Xiuzhong Fang, Wenming Liu, Zheng Wang, Ning Zhang, Xiang Wang
ChemistrySelect, August 04, 2017, https://doi.org/10.1002/slct.201701457 Read article

Hollow Co<sub>3</sub>O<sub>4</sub> Nanocages Decorated Graphene Aerogels Derived from Carbon Wrapped Nano-Co for Efficient Oxygen Reduction Reaction

4 agosto, 2017 - 00:00

Hollow Co3O4 Nanocages Decorated Graphene Aerogels Derived from Carbon Wrapped Nano‐Co for Efficient Oxygen Reduction Reaction

In our work, we report a kind of tiny hollow nano-Co3O4 decorated 3D graphene aerogels (3DG) in the first time, which derived from direct oxidation carbon wrapped Co/3DG through Kirkendall effect. Due to its unique structure, the hollow Co3O4/3DG shows excellent ORR catalytic activity with almost four-electron reduction pathway.

[Full Paper]
Zhao-Yang Chen, Ya-Nan Li, Min-Qiang Wang, Mao-wen Xu, Shu-Juan Bao
ChemistrySelect, August 04, 2017, https://doi.org/10.1002/slct.201701355 Read article

Three-Component Cascade Reaction in a Tube: In Situ Synthesis of Pd Nanoparticles Supported on mpg-C<sub>3</sub>N<sub>4</sub>, Dehydrogenation of Ammonia Borane and Hydrogenation of Nitroarenes

4 agosto, 2017 - 00:00

 In Situ Synthesis of Pd Nanoparticles Supported on mpg‐C3N4, Dehydrogenation of Ammonia Borane and Hydrogenation of Nitroarenes

With this report, a three-component cascade reaction encompassing in situ synthesis of Pd NPs supported on mpg-C3N4, dehydrogenation of AB and the transfer hydrogenation of nitroarenes were achieved in a commercially available pressure tube at room temperature within only 1–2 min. Besides the tandem reactions, the mpg-C3N4/Pd catalyst was isolated from the reaction medium to be tested as catalyst in the hydrolytic dehydrogenation of AB.

[Full Paper]
Bilal Ni&#x15F;anc&#x131;, Muhammet Turgut, Melike Sevim, Önder Metin
ChemistrySelect, August 04, 2017, https://doi.org/10.1002/slct.201701188 Read article

Efficient Degradation of Endocrine Disruptors Using 1D and 3D Copper (I) Oxide Nanostructures

4 agosto, 2017 - 00:00

Efficient Degradation of Endocrine Disruptors Using 1D and 3D Copper (I) Oxide Nanostructures

1D and 3D copper (I) oxide nanostructures were synthesized using wet chemical method and their photocatalytic activities towards degradation of endocrine disruptors were studied under visible light irradiation at different pH. 1D nanostructures showed best degradation ability with t1/2 value of 11.6 minutes at pH ∼ 7.

[Full Paper]
Indrani Mukherjee, Anushka Mishrra, Rajnarayan Saha, Sriparna Chatterjee
ChemistrySelect, August 04, 2017, https://doi.org/10.1002/slct.201701181 Read article

Scavenging Pd<sup>2+</sup> on Amine-Functionalized SBA-15: A Facile Synthesis of Leach-Free Pd<sup>0</sup> Nanocatalyst for Base-Free Chemoselective Transfer Hydrogenation of Olefins

4 agosto, 2017 - 00:00

 A Facile Synthesis of Leach‐Free Pd0 Nanocatalyst for Base‐Free Chemoselective Transfer Hydrogenation of Olefins

Amine-functionalized SBA-15 act as effective Pd2+ scavenger and as-generated surface bound Pd0 NPs are found to be highly active heterogeneous catalyst for base-free transfer hydrogenation of styrene to ethylbenzene using formic acid as an environmentally benign hydrogen source. The optimized reaction protocol for styrene also yielded excellent results for various substituted styrene and other alkenes. The role of free propylamine is found to be very crucial for higher conversion and selectivity of the desired alkane products.

[Full Paper]
Diganta Bhuyan, Lakshi Saikia
ChemistrySelect, August 04, 2017, https://doi.org/10.1002/slct.201701158 Read article

Graphene as Metal-Free Catalyst for Aqueous Phase Reforming of Ethylene Glycol

4 agosto, 2017 - 00:00

Graphene as Metal‐Free Catalyst for Aqueous Phase Reforming of Ethylene Glycol

In the context of valorization of biomass waste water containing polyols, it is reported that graphene in the absence of any metal catalyzes the decomposition of ethylene glycol into hydrogen and carbon dioxide due to the presence of hydrogenating/dehydrogenating sites. Control experiments have shown that the presence of acid or bases influences the activity of graphene as catalyst, while the reaction is not influenced by the presence of radical quenchers

[Communication]
Iván Esteve-Adell, Nadia Bakker, Ana Primo, Emiel J. M. Hensen, Hermenegildo García
ChemistrySelect, August 04, 2017, https://doi.org/10.1002/slct.201701138 Read article

Fabrication of Chitosan-Reinforced Zr<sub>x</sub>Al<sub>1-x</sub>OOH Nanocomposites and Their Arsenite and Fluoride Depollution Densities from Single/Binary Systems

4 agosto, 2017 - 00:00

Fabrication of Chitosan‐Reinforced ZrxAl1‐xOOH Nanocomposites and Their Arsenite and Fluoride Depollution Densities from Single/Binary Systems

The goal of this research was to understand the mechanism of AsO33− and F− removal using the chitosan (CS) reinforced ZrxAl1-xOOH material. A detailed batch experimental study was performed to understand the nature of the interactions that exist between CS@ZrxAl1-xOOH and F−/AsO33− in aqueous solution. The developed material is environmentally benign as it offers several advantages like simple way of preparation, quick and high uptake capacities, cost effective with the added benefit of recyclability.

[Full Paper]
Subbaiah Muthu Prabhu, Keiko Sasaki
ChemistrySelect, August 04, 2017, https://doi.org/10.1002/slct.201701072 Read article

Electrochemical Reaction Mechanism for Bi<sub>1-<i>x</i></sub>Ba<sub><i>x</i></sub>F<sub>3-<i>x</i></sub> (<i>x</i>=0, 0.1, 0.2, and 0.4) Electrodes in Lithium-Ion Batteries

4 agosto, 2017 - 00:00

Electrochemical Reaction Mechanism for Bi1‐xBaxF3‐x (x=0, 0.1, 0.2, and 0.4) Electrodes in Lithium‐Ion Batteries

The electrochemical reaction mechanism for Bi1-xBaxF3-x (x=0, 0.1, 0.2, and 0.4) electrode materials, which have several crystal structure types such as orthorhombic, hexagonal, and cubic was investigated. Regardless of the crystal structure in the pristine state, the crystal structure changes into the hexagonal phase after one cycle, which is the most reactive structure type of the three phases.

[Full Paper]
Hiroaki Konishi, Taketoshi Minato, Takeshi Abe, Zempachi Ogumi
ChemistrySelect, August 04, 2017, https://doi.org/10.1002/slct.201701001 Read article

Experimental and Theoretical Study for the Assessment of the Conformational Analysis of Pyrazolone Derivatives: Employing Quantitative Analysis for Intermolecular Interactions

4 agosto, 2017 - 00:00

 Employing Quantitative Analysis for Intermolecular Interactions

The Crystallographic studies of pyrazolone derivative linked with pthalimido through oxapolymethylene linker have been carried out for conformational study. The influences of folded and open conformation depend upon oxaploymethylene linker but no effect of substitution (methyl and benzene) on pyrazolone ring. The compounds 5 and 6 had shown folded conformation linked through oxaethylene spacer but compounds 7 had shown open conformation linked through oxapropylene linkers. However, DFT calculation revealed that all molecules have shown folded conformation. Further, the intermolecular interactions that stabilized crystal packing have been studied through pixel calculation and Hirshfeld surface analysis.

[Full Paper]
Ranjeet Kumar, Praveen Singh, Simon Parsons, Ashish K. Tewari
ChemistrySelect, August 04, 2017, https://doi.org/10.1002/slct.201700764 Read article

Accessing Single Enantiomer Strigolactones: Progress and Opportunities

4 agosto, 2017 - 00:00

 Progress and Opportunities

[Microreview]
Liam J. Bromhead, Christopher S. P. McErlean
Eur. J. Org. Chem., August 04, 2017, https://doi.org/10.1002/ejoc.201700865 Read article

Gold-Nanoparticle-Catalyzed Mild Diboration and Indirect Silaboration of Alkynes without the Use of Silylboranes

4 agosto, 2017 - 00:00

Gold‐Nanoparticle‐Catalyzed Mild Diboration and Indirect Silaboration of Alkynes without the Use of Silylboranes

[Full Paper]
Marios Kidonakis, Manolis Stratakis
Eur. J. Org. Chem., August 04, 2017, https://doi.org/10.1002/ejoc.201700754 Read article

Efficient Synthesis of 4- and 5-Substituted 2-Aminopyrimidines by Coupling of β-Chlorovinyl Aldehydes and Guanidines

4 agosto, 2017 - 00:00

Efficient Synthesis of 4‐ and 5‐Substituted 2‐Aminopyrimidines by Coupling of &#x3B2;‐Chlorovinyl Aldehydes and Guanidines

A condensation of ambident electrophilic &#x3B2;-chlorovinyl aldehydes with guanidines was developed for the synthesis of a library of 4- and 5-substituted 2-aminopyrimidines derivatives under mild conditions by employing potassium carbonate in methanol.

[Communication]
Anna S. Komendantova, Alexander V. Komkov, Yulia A. Volkova, Igor V. Zavarzin
Eur. J. Org. Chem., August 04, 2017, https://doi.org/10.1002/ejoc.201700737 Read article

Perfluorinated Pyridinium and Imidazolium Ionic Liquids

4 agosto, 2017 - 00:00

Perfluorinated Pyridinium and Imidazolium Ionic Liquids

Pyridinium and imidazolium ionic liquids with perfluorinated side chains and different anions were prepared and the wettabilities of the materials were investigated by water contact angle measurements. The compounds were investigated in an effort to develop perfluorinated compounds for textile impregnation as alternatives for environmentally persistent commonly used perfluoroalkyl carboxylic and sulfonic acids.

[Full Paper]
Torben Alpers, Marc Schmidtmann, Thomas W. T. Muesmann, Oliver Temme, Jens Christoffers
Eur. J. Org. Chem., August 04, 2017, https://doi.org/10.1002/ejoc.201700717 Read article

The Ambivalent Nature of Halogenated Tropone Derivatives: Dihalocycloheptatriene vs. Halotropylium Halide

4 agosto, 2017 - 00:00

 Dihalocycloheptatriene vs. Halotropylium Halide

Computational and crystallographic studies of the C7H6X2 (X = Cl, Br) system shed light on its ambivalent structure: In the solid state, the compounds exist as ionic halotropylium halides, whereas in solution, there is a highly dynamic equilibrium between different covalent isomers via their ionic form.

[Communication]
Christian Jandl, David C. Mayer, Alexander Pöthig
Eur. J. Org. Chem., August 04, 2017, https://doi.org/10.1002/ejoc.201700692 Read article

Stannylated Vinylic Addition Polynorbornene: Probing a Reagent for Friendly Tin-Mediated Radical Processes

4 agosto, 2017 - 00:00

 Probing a Reagent for Friendly Tin‐Mediated Radical Processes

Easy and efficient separation of byproducts can be carried out in tin-mediated radical reactions by using stannyl reagents anchored to vinylic addition polynorbornene (VA-PNB). Advantageously, the stannyl polymers can be reused.

[Full Paper]
Rodrigo García-Loma, Ana C. Albéniz
Eur. J. Org. Chem., August 04, 2017, https://doi.org/10.1002/ejoc.201700670 Read article

Passerini/Tsuji–Trost Strategy towards Pyrrole Derivatives

4 agosto, 2017 - 00:00

Passerini/Tsuji–Trost Strategy towards Pyrrole Derivatives

[Communication]
Noisette Narboni, Laurent El Kaim
Eur. J. Org. Chem., August 04, 2017, https://doi.org/10.1002/ejoc.201700653 Read article

Synthesis of Chiral Aziridines from Glycals: Application in the Synthesis of a Piperidine–Azepine Fused Derivative

4 agosto, 2017 - 00:00

 Application in the Synthesis of a Piperidine–Azepine Fused Derivative

Vicinal chloroamines derived from glycals have been converted into the corresponding chiral aziridines. One of the aziridines was converted into a piperidine–azepine fused derivative.

[Full Paper]
Rima Thakur, Girish K. Rawal, Yashwant D. Vankar
Eur. J. Org. Chem., August 04, 2017, https://doi.org/10.1002/ejoc.201700624 Read article

Synthesis and Rearrangement of Cage [4.3.2]Propellanes that Contain a Spiro Linkage

4 agosto, 2017 - 00:00

Synthesis and Rearrangement of Cage [4.3.2]Propellanes that Contain a Spiro Linkage

Rearranged cage ketones have been prepared in eight linear synthetic steps from 2,5-dimethoxybenzaldehyde without the use of protecting groups. The Diels–Alder reaction, [2+2]photocycloaddition, and Lewis acid promoted rearrangement with BF3·OEt2 were the key steps. This rearrangement approach opens up a new synthetic strategy to prepare interesting and unusual cage molecules.

[Full Paper]
Sambasivarao Kotha, Subba Rao Cheekatla, Binita Mandal
Eur. J. Org. Chem., August 04, 2017, https://doi.org/10.1002/ejoc.201700617 Read article

Fluoroarene Complexes with Small Bite Angle Bisphosphines: Routes to Amine–Borane and Aminoborylene Complexes

4 agosto, 2017 - 00:00

 Routes to Amine–Borane and Aminoborylene Complexes

Synthesis of a Rh–trifluoroarene complex allows access to a bridging borylene complex by an amine–borane dehydrogenation/B–H activation.

[Full Paper]
Annie L. Colebatch, Alasdair I. McKay, Nicholas A. Beattie, Stuart A. Macgregor, Andrew S. Weller
Eur. J. Inorg. Chem., August 04, 2017, https://doi.org/10.1002/ejic.201700600 Read article

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