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Articles from Wiley

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The latest chemistry from ChemPubSoc Europe and Wiley-VCH
Aggiornato: 10 settimane 3 giorni fa

Direct Sulfonamidation of Primary and Secondary Benzylic Alcohols Catalyzed by a Boronic Acid/Oxalic Acid System

10 luglio, 2017 - 00:00

Direct Sulfonamidation of Primary and Secondary Benzylic Alcohols Catalyzed by a Boronic Acid/Oxalic Acid System

A catalytic method was developed for the direct transformation of primary and secondary benzylic alcohols into various sulfonamide products using a mixture of 2,3,4,5-tetrafluorophenylboronic acid and oxalic acid as a co-catalytic system under mild conditions. The gram-scalable reaction affords acceptable to excellent yields of products using relatively benign starting materials.

[Full Paper]
Tristan Verdelet, Robert M. Ward, Dennis G. Hall
Eur. J. Org. Chem., July 10, 2017, https://doi.org/10.1002/ejoc.201700621 Read article

A Mild and Chemoselective Hydrosilylation of α-Keto Amides by Using a Cs<sub>2</sub>CO<sub>3</sub>/PMHS/2-MeTHF System

10 luglio, 2017 - 00:00

A Mild and Chemoselective Hydrosilylation of &#x3B1;‐Keto Amides by Using a Cs2CO3/PMHS/2‐MeTHF System

[Full Paper]
Govindharaj Kumar, Alagesan Muthukumar, Govindasamy Sekar
Eur. J. Org. Chem., July 10, 2017, https://doi.org/10.1002/ejoc.201700374 Read article

Copper-Catalyzed Oxidative Dehydrogenative C(sp<sup>3</sup>)−H Bond Amination of (Cyclo)Alkanes using NH-Heterocycles as Amine Sources

10 luglio, 2017 - 00:00

Copper‐Catalyzed Oxidative Dehydrogenative C(sp3)−H Bond Amination of (Cyclo)Alkanes using NH‐Heterocycles as Amine Sources

Outstanding achievement in amination: A variety of N-alkylated heterocycles is facilely synthesized by direct C−H bond amination of low-cost (cyclo)alkanes catalyzed by inexpensive copper salts. A wide range of NH-heterocycles are used as amine sources and the reaction displays good functional group compatibility.

[Full Paper]
Chang-Sheng Wang, Xiao-Feng Wu, Pierre H. Dixneuf, Jean-François Soulé
ChemSusChem, July 10, 2017, https://doi.org/10.1002/cssc.201700783 Read article

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

10 luglio, 2017 - 00:00

 A Metadynamics Study

Free the ion: The free-energy surface for lithium solvation in ethylammonium nitrate is estimated from the metadynamics potential acting in the reduced phase space of two selected collective variables. Simulations show that the lowest two free energy minima correspond to conformations with the lithium ion being solvated either by three or four nitrate ions with a transition barrier between them of 0.2 eV. The black dots mark the minimum energy pathway (MEP).

[Full Paper]
Ali Kachmar, Marcelo Carignano, Teodoro Laino, Marcella Iannuzzi, Jürg Hutter
ChemSusChem, July 10, 2017, https://doi.org/10.1002/cssc.201700510 Read article

Diffusion of Carbon Dioxide and Nitrogen in the Small-Pore Titanium Bis(phosphonate) Metal–Organic Framework MIL-91 (Ti): A Combination of Quasielastic Neutron Scattering Measurements and Molecular Dynamics Simulations

10 luglio, 2017 - 00:00

 A Combination of Quasielastic Neutron Scattering Measurements and Molecular Dynamics Simulations

Diffusion profusion: The diffusivity of CO2 and N2 in the small-pore metal–organic framework MIL-91(Ti) is explored by using a combination of quasielastic neutron scattering measurements and molecular dynamics simulations. The diffusivities of both CO2 and N2 fall in the range of 10−9 to 10−10 m2 s−1 at 230 to 300 K. At 300 K, the extrapolated N2 diffusivity is about 20 times faster than that of CO2.

[Article]
Renjith Sasimohanan Pillai, Hervé Jobic, Michael Marek Koza, Farid Nouar, Christian Serre, Guillaume Maurin, Naseem Ahmed Ramsahye
ChemPhysChem, July 10, 2017, https://doi.org/10.1002/cphc.201700459 Read article

Hierarchically Porous Carbons Derived from Cotton Stalks for High-Performance Supercapacitors

10 luglio, 2017 - 00:00

Hierarchically Porous Carbons Derived from Cotton Stalks for High‐Performance Supercapacitors

A new thread: A simple and cost-effective method for the synthesis of hierarchically porous carbons from cotton stalks (CSs) with H3PO4 activation is reported. Benefiting from the unique hierarchical structure, the resulting material presents a higher surface area utilization rate than other CS-derived porous carbons, a high specific capacitance (175 F g−1) in alkaline solution, an excellent rate capability and long-term stability.

[Article]
Xiaonan Kang, Chuanyi Wang, Jiao Yin
ChemElectroChem, July 10, 2017, https://doi.org/10.1002/celc.201700501 Read article

Synthesis and Catalysis of Redox-Active Bis(imino)acenaphthene (BIAN) Iron Complexes

10 luglio, 2017 - 00:00

Synthesis and Catalysis of Redox‐Active Bis(imino)acenaphthene (BIAN) Iron Complexes

Ironing out ligand differences: A set of redox-active tetrahedral and octahedral bis(imino)acenaphthene (BIAN) iron(II) complexes was prepared and fully characterized. The complexes exhibited reversible BIAN-centered 1 e− reductions and could be applied to catalytic hydrogenations of bulky alkenes upon reductive activation.

[Full Paper]
Matteo Villa, Dominique Miesel, Alexander Hildebrandt, Fabio Ragaini, Dieter Schaarschmidt, Axel Jacobi von Wangelin
ChemCatChem, July 10, 2017, https://doi.org/10.1002/cctc.201700144 Read article

Probing Human Telomeric DNA and RNA Topology and Ligand Binding in a Cellular Model by Using Responsive Fluorescent Nucleoside Probes

10 luglio, 2017 - 00:00

Probing Human Telomeric DNA and RNA Topology and Ligand Binding in a Cellular Model by Using Responsive Fluorescent Nucleoside Probes

Structure and recognition: A biophysical platform to investigate the structure and recognition properties of human telomeric DNA and RNA repeats in a cellular model by using conformation-sensitive fluorescent nucleoside probes has been developed.

[Full Paper]
Sudeshna Manna, Cornelia H. Panse, Vyankat A. Sontakke, Sarangamath Sangamesh, Seergazhi G. Srivatsan
ChemBioChem, July 10, 2017, https://doi.org/10.1002/cbic.201700283 Read article

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