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14,147 Newest Publications in chemistry - a european journal

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Terminal Alkyne Coupling on a Corrugated Noble Metal Surface: From Controlled Precursor Alignment to Selective Reactions

08-Sep-2017 | Tao Lin, Liding Zhang, Jonas Björk, Zhi Chen, Mario Ruben, Johannes V. Barth, Florian Klappenberger, Chemistry - A European Journal, 2017

Surface‐templated covalent coupling of organic precursors currently emerges as a promising route to the atom‐precise fabrication of low‐dimensional carbon materials. Here, we investigate the adsorption and the coupling reactions of 4,4''‐diethynyl‐1,1':4',1''‐ terphenyl on Au(110) under ...

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Host‐guest complexes of cyclodextrins and nanodiamonds as strong non‐covalent binding motif for self‐assembled nanomaterials

08-Sep-2017 | Frauke Schibilla, Jens Voskuhl, Natalie Fokina, Jeremy Dahl, Peter R. Schreiner, Bart Jan Ravoo, Chemistry - A European Journal, 2017

We report on the inclusion of carboxy‐ and amine‐substituted molecular nanodiamonds (NDs) adamantane, diamantane and triamantane by β‐ and γ‐cyclodextrin (β‐CD and γ‐CD) with particularly suited hydrophobicity and symmetry for an optimal fit of host and guest. We studied the host‐guest ...

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Synthesis of Functionalized Quinolines through a Reaction of Amides and Alkynes Promoted by Triflic Anhydride/Pyridine

08-Sep-2017 | Yong-Min Liang, Lian-Hua Li, Zhi-Jie Niu, Chemistry - A European Journal, 2017

A concise, novel and flexible metal‐free single‐step to synthesize functionalized quinolines is reported. Triflic anhydride‐mediated (Tf2O) activation of amides is discussed in the presence of pyridine to offer strong electrophiles, thereby showcasing excellent productivity, high regio‐ and ...

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Brønsted Base Mediated Regio‐ and Stereoselective trans Silaboration of Propargylamides: Access to 1,2‐Vinylborasilanes

08-Sep-2017 | Russell Fritzemeier, Webster L Santos, Chemistry - A European Journal, 2017

A facile method for the preparation of β‐boryl‐α‐silyl aryl acrylamides using phenyllithium, dimethylphenylsilylpinacol‐borane, and propargylamides is reported. A key feature of this transition metal‐free reaction is the Brønsted base deprotonation of aryl secondary propargylamide to produce a ...

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Ultrathin anionic tungstophosphite molecular wire with tunable hydrophilicity and catalytic activity for selective epoxidation in organic media

08-Sep-2017 | Zhenxin Zhang, Masahiro Sadakane, Michikazu Hara, Wataru Ueda, Chemistry - A European Journal, 2017

The extended 1D tungstophosphite molecular wire is obtained by connection of polyoxometalates. Self‐assembly of triangular PIIIO₃ unit with tungstate produces hexagonal [HPIIIW6O21]²‐ building block, which then connects linearly to form the molecular wire. The surface property of the molecular ...

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α‐ and β‐[Bmim][BiCl4(2,2'‐bpy)]: Two polymorphic Bismuth‐Containing Ionic Liquids with Crystallisation Induced Phosphorescence

08-Sep-2017 | Nannan Shen, Jianrong Li, Zhaofeng Wu, Bing Hu, Chuchu Cheng, Zeping Wang, Liaokuo Gong, Xiao-Ying Huang, Chemistry - A European Journal, 2017

Presented are the syntheses, structures, luminescent properties of two supramolecular polymorphic compounds characteristic of a hybrid bismuth (III) chloride anion and an imidazolium cation, namely α‐ (1) and β‐ (2) [Bmim][BiCl4(2,2'‐bpy)] (Bmim = 1‐butyl‐3‐methyl imidozalium; 2,2'‐bpy = ...

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Palladium Catalyzed 2,2,2‐Trifluoroethoxylation of Aromatic and Heteroaromatic Chlorides Utilizing Borate Salt and the Synthesis of Trifluoro Analog of Sildenafil

08-Sep-2017 | Bálint Pethő, Márton Zwillinger, János Csenki, Anna Káncz, Balázs Krámos, Judit Müller, György Tibor Balogh, Zoltán ..., Chemistry - A European Journal, 2017

A simple and convenient method was developed for the introduction of 2,2,2‐trifluoroethoxy group to various aromatic and heteroaromatic systems. The novel process utilizes aromatic chlorides as substrates, and tetrakis(2,2,2‐trifluoroethoxy) borate salt as an inexpensive and readily available ...

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Fused 1,2,3‐Thiaselenazoles Synthesized from 1,2,3‐Dithiazoles via Selective Chalcogen Exchange

08-Sep-2017 | Lidia S Konstantinova, Ilia V Baranovsky, Elena A Pritchina, Maksim S Mikhailov, Irina Yu Bagryanskaya, Nikolay ..., Chemistry - A European Journal, 2017

A new approach to the synthesis of variously fused 1,2,3‐thiaselenazoles, i.e. rare 5‐membered heterocycles with two different chalcogens, from the corresponding 1,2,3‐dithiazoles and selenium dioxide has been accomplished via selective exchange of S and Se atoms. The fused carbo‐ and ...

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Extending long‐lived charge separation between donor and acceptor blocks in novel copolymer architectures featuring a sensitizer core

08-Sep-2017 | Robert Schroot, Tina Schlotthauer, Benjamin Dietzek, Michael Jäger, Ulrich S Schubert, Chemistry - A European Journal, 2017

A bifunctional Ru(II) photosensitizer units was decorated with precisely one n‐ and one p‐type polymer chain to form precisely controlled hierarchical copolymer‐type architectures for light‐induced charge separation. The applied modular chemistry‐on‐the‐complex strategy benefits from separately ...

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High Oxidation State Molybdenum N‐Heterocyclic Carbene Alkylidyne Complexes: Synthesis, Mechanistic Studies and Reactivity

08-Sep-2017 | Maximilian Koy, Iris Elser, jan Meisner, Wolfgang Frey, Klaus Wurst, Johannes Kaestenr, Michael Rudolf Buchmeiser, Chemistry - A European Journal, 2017

The first synthetic protocol to high oxidation state molybdenum (VI) N‐heterocyclic carbene (NHC) alkylidyne complexes (NHC = 1,3‐diisopropylimidazol‐2‐ylidene, 1,3‐dimethyl‐4,5‐R2‐imidazol‐2‐ylidene, R2 = H, Cl, CN) is reported. Steric limitations of the NHCs and the benzylidyne are described. ...

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