slideshow 16 slideshow 1 slideshow 2 slideshow 3 slideshow 4 slideshow 5 slideshow 6 slideshow 7 slideshow 8 slideshow 0 slideshow 9 slideshow 10 slideshow 11 slideshow 12 slideshow 13 slideshow 14 slideshow 15

Articles from Wiley

Condividi contenuti
The latest chemistry from ChemPubSoc Europe and Wiley-VCH
Aggiornato: 7 settimane 5 giorni fa

Highly Enantioselective Synthesis of Alkylpyridine Derivatives through a Michael/Michael/Aldol Cascade Reaction

24 gennaio, 2017 - 00:00

Highly Enantioselective Synthesis of Alkylpyridine Derivatives through a Michael/Michael/Aldol Cascade Reaction

A method for the synthesis of pyridine derivatives based on a triple cascade reaction catalyzed by chiral secondary amines is explored. The resulting cyclohexenes (three C–C bonds are formed) are obtained in good yields with good diastereoselectivities and excellent enantioselectivities.

[Full Paper]
Marta Meazza, Michael Potter, Mateusz B. Pitak, Simon J. Coles, Andrea Mazzanti, Ramon Rios
Eur. J. Org. Chem., January 24, 2017, DOI: 10.1002/ejoc.201601491. Read article

Surprising Outcomes of Classic Ring-Expansion Conditions Applied to Octaethyloxochlorin, 2. Beckmann-Rearrangement Conditions

24 gennaio, 2017 - 00:00

Surprising Outcomes of Classic Ring‐Expansion Conditions Applied to Octaethyloxochlorin, 2. Beckmann‐Rearrangement Conditions

Application of acidic or basic Beckmann-rearrangement conditions to the oxime of octaethyloxochlorin led to an abnormal Beckmann rearrangement and eventually formed a ring-expanded porpholactone or, using alternative reaction conditions, a 2-iminoporphyrin, respectively.

[Full Paper]
Ruoshi Li, Eileen Meehan, Mathias Zeller, Christian Brückner
Eur. J. Org. Chem., January 24, 2017, DOI: 10.1002/ejoc.201601424. Read article

Surprising Outcomes of Classic Ring-Expansion Conditions Applied to Octaethyloxochlorin, 3. Schmidt-Reaction Conditions

24 gennaio, 2017 - 00:00

Surprising Outcomes of Classic Ring‐Expansion Conditions Applied to Octaethyloxochlorin, 3. Schmidt‐Reaction Conditions

Application of Schmidt-reaction conditions to octaethyloxochlorin led, depending on the mineral acid used, to either a loss of an ethyl group and the formation of an α-OH–ketochlorin, or to the step-wise and controlled chlorination of the meso-positions.

[Full Paper]
Ruoshi Li, Mathias Zeller, Torsten Bruhn, Christian Brückner
Eur. J. Org. Chem., January 24, 2017, DOI: 10.1002/ejoc.201601423. Read article

Surprising Outcomes of Classic Ring-Expansion Conditions Applied to Octaethyloxochlorin, 1. Baeyer–Villiger-Oxidation Conditions

24 gennaio, 2017 - 00:00

Surprising Outcomes of Classic Ring‐Expansion Conditions Applied to Octaethyloxochlorin, 1. Baeyer–Villiger‐Oxidation Conditions

Application of Baeyer–Villiger oxidations to oxochlorins did not lead to ring-expanded porphyrinods instead to meso- or N-oxidized products.

[Full Paper]
Ruoshi Li, Matthias Zeller, Christian Brückner
Eur. J. Org. Chem., January 24, 2017, DOI: 10.1002/ejoc.201601422. Read article

Pyranoside-into-Furanoside Rearrangement of 4-Pentenyl Glycosides in the Synthesis of a Tetrasaccharide-Related to Galactan I of <i>Klebsiella pneumoniae</i>

24 gennaio, 2017 - 00:00

Pyranoside‐into‐Furanoside Rearrangement of 4‐Pentenyl Glycosides in the Synthesis of a Tetrasaccharide‐Related to Galactan I of Klebsiella pneumoniae

Acid-free conditions for the pyranoside-into-furanoside (PIF) rearrangement of 4-pentenyl glycosides were developed. The reaction was used in the synthesis of a spacer-armed tetrasaccharide related to galactan I of Klebsiella pneumoniae, required for biological investigation.

[Full Paper]
Stella A. Verkhnyatskaya, Vadim B. Krylov, Nikolay E. Nifantiev
Eur. J. Org. Chem., January 24, 2017, DOI: 10.1002/ejoc.201601413. Read article

Synthesis of 5-Phenylthiazolamines by Using Thiourea as an α-Bromination Shuttle

24 gennaio, 2017 - 00:00

Synthesis of 5‐Phenylthiazolamines by Using Thiourea as an &#x3B1;‐Bromination Shuttle

A wide range of 5-phenylthiazolamines in isolated yields from 80 to 95 % were obtained by coupling thiourea with phenylacetones, phenylacetophenones, and &#x3B2;-tetralone. Thiourea acts as a substrate and an &#x3B1;-bromination shuttle by transferring a Br atom from CBrCl3 to the &#x3B1;-carbon of the carbonyl moiety.

[Full Paper]
Irwan Iskandar Roslan, Kian-Hong Ng, Gaik-Khuan Chuah, Stephan Jaenicke
Eur. J. Org. Chem., January 24, 2017, DOI: 10.1002/ejoc.201601410. Read article

4,5-Disubstituted <i>N</i>-Methylimidazoles as Versatile Building Blocks for Defined Side-Chain Introduction

24 gennaio, 2017 - 00:00

4,5‐Disubstituted N‐Methylimidazoles as Versatile Building Blocks for Defined Side‐Chain Introduction

[Full Paper]
Daniel Przybyla, Udo Nubbemeyer
Eur. J. Org. Chem., January 24, 2017, DOI: 10.1002/ejoc.201601384. Read article

Copper(I)-Catalyzed α-Acryloyloxylation of Ketones with α,β-Unsaturated Carboxylic Acids To Form α-Acryloyloxy Ketones

24 gennaio, 2017 - 00:00

Copper(I)‐Catalyzed &#x3B1;‐Acryloyloxylation of Ketones with &#x3B1;,&#x3B2;‐Unsaturated Carboxylic Acids To Form &#x3B1;‐Acryloyloxy Ketones

[Full Paper]
Jing-Wen Xu, Peng-Yi Ji, Yu-Feng Liu, Wei-Ping Luo, Qiang Liu, Can-Cheng Guo
Eur. J. Org. Chem., January 24, 2017, DOI: 10.1002/ejoc.201601346. Read article

Helix-Rotaxane Hybrid Systems: Rotaxane-Stabilized, Saccharide-Induced Chiral Ethynylpyridine Helices by a Thermodynamic Process

24 gennaio, 2017 - 00:00

 Rotaxane‐Stabilized, Saccharide‐Induced Chiral Ethynylpyridine Helices by a Thermodynamic Process

[Full Paper]
Shu Hirokane, Shunsuke Takashima, Hajime Abe, Masahiko Inouye
Eur. J. Org. Chem., January 24, 2017, DOI: 10.1002/ejoc.201601323. Read article

Synthesis of Functionalized Cyclic Carbonates by One-Pot Reactions of Carbon Dioxide, Epibromohydrin, and Phenols, Thiophenols, or Carboxylic Acids Catalyzed by Ionic Liquids

24 gennaio, 2017 - 00:00

Synthesis of Functionalized Cyclic Carbonates by One‐Pot Reactions of Carbon Dioxide, Epibromohydrin, and Phenols, Thiophenols, or Carboxylic Acids Catalyzed by Ionic Liquids

A procedure for the synthesis of functionalized cyclic carbonates from the one-pot reactions of CO2, epibromohydrin, and phenols, thiophenols, or carboxylic acids catalyzed by ionic liquids is developed. Under mild reaction conditions, 28 functionalized cyclic carbonates, including 15 new compounds, are synthesized in good-to-high yields. A proton exchange plays a crucial role in the reaction.

[Full Paper]
Shi Wu, Yongya Zhang, Binshen Wang, Elnazeer H. M. Elageed, Liangzheng Ji, Haihong Wu, Guohua Gao
Eur. J. Org. Chem., January 24, 2017, DOI: 10.1002/ejoc.201601315. Read article

Mechanochemical Synthesis of Dipeptides Using Mg-Al Hydrotalcite as Activating Agent under Solvent-Free Reaction Conditions

24 gennaio, 2017 - 00:00

Mechanochemical Synthesis of Dipeptides Using Mg‐Al Hydrotalcite as Activating Agent under Solvent‐Free Reaction Conditions

An efficient protocol for the synthesis of several &#x3B1;,&#x3B1;-, &#x3B1;,&#x3B2;-, and &#x3B2;,&#x3B2;-dipeptides under ball-milling activation and solvent-free conditions has been developed. The reaction takes place in the presence of coupling agents EDC, HOBt, and with Mg-Al hydrotalcite as activator.

[Full Paper]
José M. Landeros, Eusebio Juaristi
Eur. J. Org. Chem., January 24, 2017, DOI: 10.1002/ejoc.201601276. Read article

Modular Urea-Based Catalytic Platforms Bearing Flexible Pyridylmethylamine and Rigid Pyridyl-Imidazolidine Fragments

24 gennaio, 2017 - 00:00

Modular Urea‐Based Catalytic Platforms Bearing Flexible Pyridylmethylamine and Rigid Pyridyl‐Imidazolidine Fragments

The selective and concise synthesis of new urea-based catalytic platforms is described. These new catalytic systems efficiently promote enantioselective Michael additions and catalyse Henry-type reactions.

[Full Paper]
Olivier Colin, Hamza Boufroura, Christine Thomassigny, Serge Perato, Anne Gaucher, Jérôme Marrot, Damien Prim
Eur. J. Org. Chem., January 24, 2017, DOI: 10.1002/ejoc.201601271. Read article

Reactivity and Structural Diversity in the Reaction of Guanidine 1,5,7-Triazabicyclo[4.4.0]dec-5-ene with CO<sub>2</sub>, CS<sub>2</sub>, and Other Heterocumulenes

24 gennaio, 2017 - 00:00

Reactivity and Structural Diversity in the Reaction of Guanidine 1,5,7‐Triazabicyclo[4.4.0]dec‐5‐ene with CO2, CS2, and Other Heterocumulenes

The guanidine 1,5,7-triazabicyclo[4.4.0]dec-5-ene (TBD) reacts with the heterocumulenes CO2, CS2, iPr2NCNiPr2, p-tolylNCO, and p-tolylNCS to yield a variety of adducts or insertion products. The differences in the reactivities of the different heterocumulenes have been rationalized through DFT calculations.

[Full Paper]
Niklas von Wolff, Claude Villiers, Pierre Thuéry, Guillaume Lefèvre, Michel Ephritikhine, Thibault Cantat
Eur. J. Org. Chem., January 24, 2017, DOI: 10.1002/ejoc.201601267. Read article

Anticancer, Azonafide-Inspired Fluorescent Ligands and Their Rhenium(I) Complexes for Cellular Imaging

24 gennaio, 2017 - 00:00

Anticancer, Azonafide‐Inspired Fluorescent Ligands and Their Rhenium(I) Complexes for Cellular Imaging

[Full Paper]
Emily E. Langdon-Jones, Ariana B. Jones, Catrin F. Williams, Anthony J. Hayes, David Lloyd, Huw J. Mottram, Simon J. A. Pope
Eur. J. Inorg. Chem., January 24, 2017, DOI: 10.1002/ejic.201601271. Read article

Oxidizing Rhodium with Sulfuric Acid: The Sulfates Rh<sub>2</sub>(SO<sub>4</sub>)<sub>3</sub> and Rh<sub>2</sub>(SO<sub>4</sub>)<sub>3</sub>·2H<sub>2</sub>O

24 gennaio, 2017 - 00:00

 The Sulfates Rh2(SO4)3 and Rh2(SO4)3·2H2O

Surprisingly, at high temperatures and in a closed system elemental rhodium can be oxidized by concentrated sulfuric acid. Such reactions lead to beautiful red-coloured crystals of Rh2(SO4)3, which is a rare example of an anhydrous noble metal sulfate. At higher temperatures the hydrate Rh2(SO4)3·2H2O forms instead. Both sulfates show a complex network of [RhO6] octahedra and [SO4] tetrahedra.

[Full Paper]
Stefan Schwarzer, Annika Betke, Christian Logemann, Mathias S. Wickleder
Eur. J. Inorg. Chem., January 24, 2017, DOI: 10.1002/ejic.201601247. Read article

Hydrothermal Synthesis of ZnWO<sub>4</sub> Hierarchical Hexangular Microstars for Enhanced Lithium-Storage Properties

24 gennaio, 2017 - 00:00

Hydrothermal Synthesis of ZnWO4 Hierarchical Hexangular Microstars for Enhanced Lithium‐Storage Properties

ZnWO4 hierarchical hexangular microstars (HHMs) composed of crossed microplatelets were synthesized by a two-step hydrothermal reaction without using any surfactants. The excellent lithium-storage ability of ZnWO4 HHMs is attributed to their unique structure.

[Full Paper]
Nianxiang Shi, Shenglin Xiong, Fangfang Wu, Jing Bai, Yanting Chu, Hongzhi Mao, Jinkui Feng, Baojuan Xi
Eur. J. Inorg. Chem., January 24, 2017, DOI: 10.1002/ejic.201601225. Read article

Synthesis of Cyclopentadienyl-Based Tricarbonyl Rhenium Complexes and Some Unusual Reactivities of Cyclopentadienyl Substituents

24 gennaio, 2017 - 00:00

Synthesis of Cyclopentadienyl‐Based Tricarbonyl Rhenium Complexes and Some Unusual Reactivities of Cyclopentadienyl Substituents

A series of cyclopentadienyl-substituted tricarbonyl rhenium complexes are synthesized, and their structure–activity relationships are evaluated. Some unusual reactivity through [6+4] cycloaddition or hydrogen transfer leads to new pathways for the modification of the cyclopentadienyl ligand.

[Full Paper]
Suresh Raju, Christian A. M. R. van Slagmaat, Martin Lutz, Hendrik Kleijn, Johann T. B. H. Jastrzebski, Marc-Etienne Moret, Robertus J. M. Klein Gebbink
Eur. J. Inorg. Chem., January 24, 2017, DOI: 10.1002/ejic.201601220. Read article

Enhanced Photocatalytic Activity of a Molybdate-Intercalated Iron-Based Layered Double Hydroxide

24 gennaio, 2017 - 00:00

Enhanced Photocatalytic Activity of a Molybdate‐Intercalated Iron‐Based Layered Double Hydroxide

[Full Paper]
Lagnamayee Mohapatra, Dhananjaya Patra, Kulamani Parida, Syed Javaid Zaidi
Eur. J. Inorg. Chem., January 24, 2017, DOI: 10.1002/ejic.201601191. Read article

Activation of CS<sub>2</sub> and COS at a Rhodium(I) Germyl Complex: Generation of CS and Carbido Complexes

24 gennaio, 2017 - 00:00

 Generation of CS and Carbido Complexes

The activation of CS2 and COS at the 16-electron rhodium germyl complex [Rh(GePh3)(PEt3)3] is reported. For CS2 fragmentation results in the formation of µ-carbido complex trans,trans-[{Rh(SBpin)(PEt3)2}(µ-C){Rh(SGePh3)(PEt3)2}] on treatment of germylthiolato complex [Rh(SGePh3)(CS)(PEt3)2] with the boryl complex [Rh(Bpin)(PEt3)3] (pin = pinacolato).

[Full Paper]
Theresia Ahrens, Bastian Schmiedecke, Thomas Braun, Roy Herrmann, Reik Laubenstein
Eur. J. Inorg. Chem., January 24, 2017, DOI: 10.1002/ejic.201601122. Read article

Corrigendum: The Role of Reduced Graphite Oxide in Transition Metal Oxide Nanocomposites Used as Li Anode Material: An Operando Study on CoFe<sub>2</sub>O<sub>4</sub>/rGO

24 gennaio, 2017 - 00:00

[Corrigendum]
Stefan Permien, Sylvio Indris, Gero Neubüser, Andy Fiedler, Lorenz Kienle, Stefan Zander, Stephen Doyle, Björn Richter, Wolfgang Bensch
Chem. Eur. J., January 24, 2017, DOI: 10.1002/chem.201605939. Read article

Copyright © 2012 Società Chimica Italiana. All Rights Reserved.