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Articles from Wiley

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The latest chemistry from ChemPubSoc Europe and Wiley-VCH
Aggiornato: 2 settimane 3 giorni fa

Porous CuCo<sub>2</sub>O<sub>4</sub> Nanotubules for Li-Ion Battery Anode

4 aprile, 2017 - 00:00

Porous CuCo2O4 Nanotubules for Li‐Ion Battery Anode

CuCo2O4 nanotubules synthesized by electrospinning method show reversible capacity of 767 mAh g-1 at 0.375 C with good stability tested up to 360 cycles. At a current density of 1.25 C, a fairly impressive capacity of 553 mAh g-1 is seen during rate performance analysis.

[Full Paper]
Monika Bhardwaj, Apurva Patrike, Rounak Naphade, Surendar Tonda, Yogesh Gawli, Satishchandra Ogale
ChemistrySelect, April 04, 2017, https://doi.org/10.1002/slct.201700183 Read article

White Light Emitting Polymers Possessing Thienothiophene and Boron Units

4 aprile, 2017 - 00:00

White Light Emitting Polymers Possessing Thienothiophene and Boron Units

Four copolymers of thienothiophenes (TT) with boron were prepared, among which two copolymers obtained through only peripheral polymerization have been demonstrated to be promising candidates for organic white light-emitting devices. Enhancement of their efficiencies was attempted by using triphenylamine (TPA) and tetraphenylethene (TPE) substituents.

[Full Paper]
O. Sahin, M. E. Cinar, E. Tekin, S. P. Mucur, S. Topal, G. Suna, M. S. Eroglu, T. Ozturk
ChemistrySelect, April 04, 2017, https://doi.org/10.1002/slct.201700174 Read article

An Efficient Four-Component Reaction for the Rapid Synthesis of Highly Functionalized Pyrano[2,3-<i>c</i>]pyrazoles Catalyzed by [Dabco-H][AcO] Ionic Liquid Under Mild Condition

4 aprile, 2017 - 00:00

An Efficient Four‐Component Reaction for the Rapid Synthesis of Highly Functionalized Pyrano[2,3‐c]pyrazoles Catalyzed by [Dabco‐H][AcO] Ionic Liquid Under Mild Condition

A general method for the one-pot, four-component synthesis of highly functionalized pyrano[2,3-c]pyrazoles from a wide range of carbonyl compounds including aromatic/aliphatic aldehydes, aliphatic ketones, isatins, acenaphthenequinone and ninhydrinhas been successfully developed.

[Full Paper]
Tong Liu, Cheng-Bin Li, Ya-Qin Yu, Da-Zhen Xu
ChemistrySelect, April 04, 2017, https://doi.org/10.1002/slct.201700168 Read article

Synthesis of Rhodamine-Based Chemosensor for Fe<sup>3+</sup> Selective Detection with <i>off–on</i> Mechanism and its Biological Application in DL-Tumor Cells

4 aprile, 2017 - 00:00

Synthesis of Rhodamine‐Based Chemosensor for Fe3+ Selective Detection with off–on Mechanism and its Biological Application in DL‐Tumor Cells

A rhodamine B based chemosensor (R1) was synthesized through simple condensation process for selective sensing of Fe3+ ion with off-on mechanism in semi-aqueous medium up to ppb level concentration and its biological application in vitro DL-tumor cell with high proliferation. The theoretical DFT calculation was carried out to support all the experimental and photo-physical studies of R1 and R1:Fe3+.

[Full Paper]
Ashish Kumar, Chanda Kumari, Dibyendu Sain, Sumit Kumar Hira, Partha Pratim Manna, Swapan Dey
ChemistrySelect, April 04, 2017, https://doi.org/10.1002/slct.201700165 Read article

‘4+1’ Mixed Ligand Strategy for the Preparation of <sup>99m</sup>Tc-Radiopharmaceuticals for Hypoxia Detecting Applications

4 aprile, 2017 - 00:00

‘4+1’ Mixed Ligand Strategy for the Preparation of 99mTc‐Radiopharmaceuticals for Hypoxia Detecting Applications

Radiolabeled nitroimidazoles are potential markers of hypoxia and offers a non-invasive technique for the hypoxia detection. The present work describes the preparation of two 99mTc labelled nitroimidazole derivatives using ‘4+1’ mixed ligand strategy and their evaluation in Swiss mice bearing fibrosarcoma tumor.

[Full Paper]
Kusum Vats, Madhava B. Mallia, Anupam Mathur, Haladhar D. Sarma, Sharmila Banerjee
ChemistrySelect, April 04, 2017, https://doi.org/10.1002/slct.201700150 Read article

The Magnetic Properties of Sol-Gel Synthesized TM<sub>0.03</sub>Zn<sub>0.97</sub>O (TM: Mn, Fe, Co and Ni) Nanoparticles: Role of Different Transition Metals

4 aprile, 2017 - 00:00

 Role of Different Transition Metals

Co:ZnO sample exhibits reasonably good intrinsic ferromagnetism with Co ions occupying mostly substitutional position

[Full Paper]
Azaharuddin Ahmed, Ashok Kumar Yadav, Shambu Nath Jha, Dibyendu Bhattacharyya, Aritra Banerjee, Sudipta Bandyopadhyay
ChemistrySelect, April 04, 2017, https://doi.org/10.1002/slct.201700038 Read article

NMR Spectroscopy Metabolomics Applied to Crack Cocaine Users and Patients with Schizophrenia: Similar Behavior but Different Molecular Causes

4 aprile, 2017 - 00:00

 Similar Behavior but Different Molecular Causes

Crack-cocaine abuse causes significant metabolomic changes that provoke behavior alterations, which easily can be mistaken for positive symptoms of schizophrenia. 1D and 2D NMR analyses combined with chemometrics point to biomarkers that suffered alterations in the studied populations. Thus, NMR-based metabolomics, differently of what we might assume by comparing symptoms, showed that molecular differences between these two morbidities are easy to detect.

[Communication]
Ljubica Tasic, João Guilherme de Moraes Pontes, Rafael Nogueira de Souza, Antonio Jadson Marreiro Brasil, Guilherme Crispim de Faria Cruz, Elson Asevedo, Caroline Dal Mas, Ronei Jesus Poppi, Elisa Brietzke, Mirian Akemi Furuie Hayashi, Acioly Luiz Tavares Lacerda
ChemistrySelect, April 04, 2017, https://doi.org/10.1002/slct.201700009 Read article

Antimicrobial and Photocatalytic Abilities of Ag<sub>2</sub>CO<sub>3</sub> Nano-Rods

4 aprile, 2017 - 00:00

Antimicrobial and Photocatalytic Abilities of Ag2CO3 Nano‐Rods

Dual functionality, photocatalytic and antimicrobial, of Ag2CO3 nano-rods. New insight of photocatalytic degradation mechanism of organic dyes over Ag2CO3. Toxic action of free Ag+ ions was distinguished from Ag2CO3 based on bacterial inactivation rates in broad concentration range.

[Full Paper]
Davor Lon&#x10D;arevi&#x107;, Ivana Vukoje, Jasmina Dostani&#x107;, Andjelika Bjelajac, Vesna &#x110;or&#x111;evi&#x107;, Suzana Dimitrijevi&#x107;, Jovan M. Nedeljkovi&#x107;
ChemistrySelect, April 04, 2017, https://doi.org/10.1002/slct.201700003 Read article

New Quinoline Linked Chalcone and Pyrazoline Conjugates: Molecular Properties Prediction, Antimicrobial and Antitubercular Activities

4 aprile, 2017 - 00:00

 Molecular Properties Prediction, Antimicrobial and Antitubercular Activities

Two novel series comprising of forty two compounds have been synthesized by conjugating quinoline scaffold with chalcone as well as pyrazoline motifs. All the synthesized conjugates were tested for their antibacterial, antifungal and anti-tubercular activities. Among the title conjugates, compounds 4 j and 7 b were found to be the promising candidates exhibiting MIC 4 &#x3BC;g/mL against B. subtilisMTCC 121 and M. luteus MTCC 2470. Moreover, several conjugates significantly inhibited growth of certain fungal organisms. Furthermore, some of the conjugates displayed moderate anti-tubercular activity against both H37RV as well as RifR strains and these derivatives showed a good in vitro activity/toxicity ratio.

[Full Paper]
N. Sankara Rao, Anver Basha Shaik, Sunitha Rani Routhu, S. M. Ali Hussaini, Satish Sunkari, A. V. Subba Rao, A. Malla Reddy, Abdullah Alarifi, Ahmed Kamal
ChemistrySelect, April 04, 2017, https://doi.org/10.1002/slct.201602022 Read article

Synthesis, Characterization, DFT Study, Catechol Oxidase and Phenoxazinone Synthase Like Activities of Two New Manganese(IV) Schiff Base Complexes

4 aprile, 2017 - 00:00

Synthesis, Characterization, DFT Study, Catechol Oxidase and Phenoxazinone Synthase Like Activities of Two New Manganese(IV) Schiff Base Complexes

Two distorted octahedral manganese(IV) complexes have been prepared and characterized. Supramolecular networks generated through non-covalent forces including C−H⋅⋅⋅&#x3C0; and Br⋅⋅⋅Br interactions have been studied energetically. Both complexes show catechol oxidase and phenoxazinone synthase like activity.

[Full Paper]
Nandita Sarkar, Klaus Harms, Antonio Bauzá, Antonio Frontera, Shouvik Chattopadhyay
ChemistrySelect, April 04, 2017, https://doi.org/10.1002/slct.201601664 Read article

Host–Guest Complexes of C-Ethyl-2-methylresorcinarene and Aromatic <i>N</i>,<i>N</i>′-Dioxides

4 aprile, 2017 - 00:00

Host–Guest Complexes of C‐Ethyl‐2‐methylresorcinarene and Aromatic N,N′‐Dioxides

NO need: C-Ethyl-2-methylresorcinarene forms 1:1 host–guest complexes with aromatic N,N′-dioxides through C−H⋅⋅⋅&#x3C0; interactions, only when every aromatic ring has an N-oxide group. Guest displacement competition experiments in solution lead to a clear ranking of guest selectivity according to 1H NMR analysis, which, in turn, is supported by solid-state X-ray crystallographic analysis.

[Full Paper]
Rakesh Puttreddy, Ngong Kodiah Beyeh, Robin H. A. Ras, Kari Rissanen
ChemistryOpen, April 04, 2017, https://doi.org/10.1002/open.201700026 Read article

Novel 5-(Benzo[b]thiophen-3-yl)pyridine-3-carbaldehyde (BTPA) Functionalization Framework For Modulating Fullerene Electronics

4 aprile, 2017 - 00:00

Novel 5‐(Benzo[b]thiophen‐3‐yl)pyridine‐3‐carbaldehyde (BTPA) Functionalization Framework For Modulating Fullerene Electronics

You've been framed: 3-(Benzo[b]thiophene-3yl)-5-fullero-1-methylpyrrolidinepyridine (BTFP) is revealed to be energetically like phenyl-C61-butyric-acid-methyl-ester (PCBM). BTFP exhibits close similarity to PCBM in terms of the first reduction potential values (−0.62 and −0.61 V vs. Ag/AgCl, for BTFP and PCBM, respectively) and lowest occupied molecular orbital energy level values (3.93 eV in both cases).

[Communication]
Suru V. John, Christian C. De Filippo, Simone Silvestrini, Michele Maggini, Emmanuel Iwuoha
ChemistryOpen, April 04, 2017, https://doi.org/10.1002/open.201600174 Read article

Front Cover: Surprising Outcomes of Classic Ring-Expansion Conditions Applied to Octaethyloxochlorin, 2. Beckmann-Rearrangement Conditions (Eur. J. Org. Chem. /2017)

4 aprile, 2017 - 00:00

 Surprising Outcomes of Classic Ring‐Expansion Conditions Applied to Octaethyloxochlorin, 2. Beckmann‐Rearrangement Conditions (Eur. J. Org. Chem. /2017)

The cover picture shows some of the many accidental oxidation-product hits formed in the unsuccessful attempts to generate the ring-expanded target lactam or lactone from octaethyloxochlorin by using classic ring-expansion reactions (Baeyer–Villiger, Beckmann, and Schmidt reaction conditions); only one, — and also unexpected — ring-expanded product could be made. The work highlights how the conformation constraints within a porphyrin macrocycle thwart the expected outcomes of classic name reactions. Details are discussed in the consecutive Full Papers by C. Brückner et al. on page -- ff (DOI: 10.1002/ejoc.201601422, 10.1002/ejoc.201601423 and 10.1002/ejoc.201601424).

[Front Cover]
Ruoshi Li, Mathias Zeller, Torsten Bruhn, Christian Brückner
Eur. J. Org. Chem., April 04, 2017, https://doi.org/10.1002/ejoc.201700435 Read article

Highly Diastereo- and Enantioselective Synthesis of α-Spiro-δ-lactams by an Organocascade Reaction

4 aprile, 2017 - 00:00

Highly Diastereo‐ and Enantioselective Synthesis of &#x3B1;‐Spiro‐&#x3B4;‐lactams by an Organocascade Reaction

An asymmetric synthesis of &#x3B1;-spiro-&#x3B4;-lactams by an organocascade reaction by enantioselective Michael addition of &#x3B2;-ketoamide to &#x3B1;,&#x3B2;-unsaturated aldehyde catalyzed by a secondary amine catalyst, followed by hemiaminal annulation, is reported. Optically enantiopure compounds with three stereogenic centres are obtained in good yields and excellent selectivities (up to >20:1 dr and up to >99 % ee).

[Full Paper]
Kaiheng Zhang, Marta Meazza, Vojt&#x11B;ch Do&#x10D;ekal, Mark E. Light, Jan Veselý, Ramon Rios
Eur. J. Org. Chem., April 04, 2017, https://doi.org/10.1002/ejoc.201700193 Read article

Protecting-Group-Free Total Syntheses of Rubrolide R and S

4 aprile, 2017 - 00:00

Protecting‐Group‐Free Total Syntheses of Rubrolide R and S

[Communication]
Mathias Schacht, Gordon Jacob Boehlich, Jessica de Vries, Stephanie Bertram, Gülsah Gabriel, Phyllis Zimmermann, Peter Heisig, Nina Schützenmeister
Eur. J. Org. Chem., April 04, 2017, https://doi.org/10.1002/ejoc.201700158 Read article

Sterically Constrained and Encumbered: An Approach to the Naturally Occurring Peptidomimetic Tetrahydropyrazino[1,2-<i>a</i>]indole-1,4-dione Core

4 aprile, 2017 - 00:00

 An Approach to the Naturally Occurring Peptidomimetic Tetrahydropyrazino[1,2‐a]indole‐1,4‐dione Core

The formation of constrained peptidomimetic piperazinone-2,5-diones through the intramolecular alkylation of Joullié–Ugi adducts is described. Sterically encumbered peptidomimetic compounds based on the scarce tricyclic piperazine-2,5-dione core are prepared in good yields.

[Communication]
Pavel Golubev, Mikhail Krasavin
Eur. J. Org. Chem., April 04, 2017, https://doi.org/10.1002/ejoc.201700152 Read article

Ruthenium-Catalyzed Cross-Metathesis of Allyl Acetate and Styrenes: A Practical Approach to the Synthesis of Tripolinolate A and Its Analogs

4 aprile, 2017 - 00:00

 A Practical Approach to the Synthesis of Tripolinolate A and Its Analogs

The cross-metathesis between allyl esters and variously substituted styrenes is discussed. The reaction is efficiently catalyzed by Hoveyda–Grubbs second-generation catalyst in perfluorinated toluene and provides cinnamyl acetates in reasonable yields. The presented method is utilized in the synthesis of natural products that exhibit anticancer activity.

[Communication]
Yasuhiro Araki, Nikola Topolov&#x10D;an, Martin Kotora
Eur. J. Org. Chem., April 04, 2017, https://doi.org/10.1002/ejoc.201700132 Read article

Effect of Double Branching in α,ω-Substituted Oligothiophenes on Thermal Solid-State Properties

4 aprile, 2017 - 00:00

Effect of Double Branching in &#x3B1;,&#x3C9;‐Substituted Oligothiophenes on Thermal Solid‐State Properties

Highly systematic double-branching of substituents in the &#x3B1;,&#x3C9;-substituted oligothiophene series leads to surprisingly low transition enthalpies and entropies.

[Full Paper]
Jochen Gülcher, Roman Vill, Markus Braumüller, Khosrow Rahimi, Wim H. de Jeu, Ahmed Mourran, Ulrich Ziener
Eur. J. Org. Chem., April 04, 2017, https://doi.org/10.1002/ejoc.201700046 Read article

Unique Strategies for Controlling Enantioselective Stereochemistry of Cyclizations via Radical Intermediates

4 aprile, 2017 - 00:00

Unique Strategies for Controlling Enantioselective Stereochemistry of Cyclizations via Radical Intermediates

[Microreview]
Hideto Miyabe
Eur. J. Org. Chem., April 04, 2017, https://doi.org/10.1002/ejoc.201700036 Read article

K<sub>2</sub>S<sub>2</sub>O<sub>8</sub>-Promoted Direct C–H Phosphorylation of (Benzo)thiazoles

4 aprile, 2017 - 00:00

K2S2O8‐Promoted Direct C–H Phosphorylation of (Benzo)thiazoles

The transition-metal-free K2S2O8-mediated C–H phosphorylation of (benzo)thiazoles is realized under mild conditions; this method provides straightforward access to a series of 2-phosphoryl (benzo)thiazoles in moderate to good yields.

[Communication]
Weidong Lin, Feng Su, Hui-Jun Zhang, Ting-Bin Wen
Eur. J. Org. Chem., April 04, 2017, https://doi.org/10.1002/ejoc.201700022 Read article

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