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Versatile Modes of Cooperative B‐H Bond Activation Reactions in Ruthenium Carbene Complexes: Addition, Ring‐opening and Insertion

18-Jan-2018 | Scharf T. Lennart, Julia Weismann, Kai-Stephan Feichtner, Felix Lindl, Viktoria H. Gessner, Chemistry - A European Journal, 2018

Cooperative B‐H bond activation reactions with thio‐ and iminophosphoryl tethered ruthenium carbene complexes are reported. The complexes show surprisingly different reactivities towards the commonly employed boranes CatBH, PinBH and BH3∙LB as a result of different modes of metal ligand ...


Synthesis and Electric Properties of a Two‐Dimensional Metal‐Organic Framework Based on Phthalocyanine

18-Jan-2018 | Hisanori Nagatomi, Nobuhiro Yanai, Teppei Yamada, Kanji Shiraishi, Nobuo Kimizuka, Chemistry - A European Journal, 2018

Abstract Complexation of copper(II) 2,3,9,10,16,17,23,24‐octahydroxy‐29H,31H‐phthalocyanine (CuPcOH) with copper(II) ions gives a two‐dimensional (2D) metal‐organic framework (MOF). This is the first report of a phthalocyanine‐based MOF. This 2D MOF was obtained as a black powder and showed an ...


Remote C‐H Activation of Various N‐Heterocycles Using a Single Template

18-Jan-2018 | Guoqiang Yang, Dajian Zhu, Peng Wang, Ri-Yuan Tang, Jin-Quan Yu, Chemistry - A European Journal, 2018

A single simple ortho‐sulfonyl benzonitrile template was developed to achieve remote C‐H olefination of six different classes of N‐heterocycles. We demonstrate that, by varying precatalysts and conditions, the same template can be applied to the remote C‐H activation of six structurally distinct ...


Integration of open metal sites and Lewis basic sites for construction of a Cu MOF with rare chiral Oh type of cage for high performance of methane purification

18-Jan-2018 | Zhan Shi, Lingkun Meng, Ziyuan Niu, Chen Liang, XingLong Dong, Kang Liu, Guanghua Li, Chunguang Li, Yu Han, Shouhua Feng, Chemistry - A European Journal, 2018

A Cu MOF [Cu4(PMTD)2(H2O)3]·20H2O, 1, (Where PMTD is (1,4‐phenylenebis(5‐methyl‐4H‐1,2,4‐triazole‐3,4‐diyl)bis(5‐carboxylato‐3,1‐phenylene)bis(hydroperoxymethanide) with rare chiral Oh type of cage and dual functionalities of open metal sites and Lewis basic sites based on a designed U‐shaped ...


Oxidation of Methylalumoxane Oligomers

17-Jan-2018 | Harmen Zijlstra, Scott Collins, Jason Scott McIndoe, Chemistry - A European Journal, 2018

The anions formed from methylalumoxane (MAO) and suitable donors (e.g. octamethyltrisiloxane) are amenable to mass spectrometric (MS) analysis. Their composition as deduced from this data allows direct insight into the chemical transformations of their neutral precursors. One such process is ...


Mixed Fluorotryptophan Substitutions at the Same Residue Expand the Versatility of ¹⁹F Protein NMR Spectroscopy

17-Jan-2018 | Calem Kenward, Kyungsoo Shin, Jan Rainey, Chemistry - A European Journal, 2018

The strategy of applying fluorine NMR to characterize ligand binding to a membrane protein prepared with mixtures of tryptophans substituted with F at different positions on the indole ring was tested. The ¹⁹F NMR behavior of 4‐, 5‐, 6‐, and 7‐fluorotryptophan were directly compared as a ...


Twisted charge‐transfer antennas for ultra‐bright terbium(III) and dysprosium(III) bioprobes.

17-Jan-2018 | Anh Thy Bui, Amandine Roux, Alexei Grichine, Alain Duperray, Chantal Andraud, Olivier Maury, Chemistry - A European Journal, 2018

The design of original twisted charge transfer antennas where a non planar geometry is enforced thanks to one or two bulky ortho‐Me substituents allows us to prepare the corresponding ultra‐bright Tb(III) and Dy(III) bioprobes. The brightness of the Tb(III) derivative compares well with that of ...


Title Synthesis of α‐L‐fucopyranoside‐presenting glycoclusters and investigation of their interaction with recombinant Photorhabdus asymbiotica lectin (PHL)

17-Jan-2018 | Jančaříková Gita, Mihály Herczeg, Eva Fujdiarová, Josef Houser, Katalin E. Kövér, Anikó Borbás, Michaela Wimmerová, ..., Chemistry - A European Journal, 2018

Photorhabdus asymbiotica is a gram‐negative bacterium that is not only as effective an insect pathogen as other members of the genus, but it also causes serious diseases in humans. The recently identified lectin PHL from P. asymbiotica verifiably modulates an immune response of humans and ...


Laterally and Temporally Controlled Intracellular Staining by Light‐Triggered Release of Encapsulated Fluorescent Markers

17-Jan-2018 | Karsten Kantner, Joanna Rejman, Karl V. L. Kraft, Mahmoud G. Soliman, Mikhail V. Zyuzin, Alberto Escudero, Pablo del ..., Chemistry - A European Journal, 2018

Abstract Fluorescent molecular markers were encapsulated. The capsules were additionally modified with plasmonic nanoparticles. The encapsulated markers were endocytosed by cells. Upon light stimulation the plasmonic nanoparticles generated heat, which opened the encapsulation and transiently ...


Enantioselective Synthesis of Aminodiols by Sequential Rh‐Catalysed Oxyamination/Kinetic Resolution. Expanding the Substrate Scope of Amidine‐Based Catalysis

17-Jan-2018 | Joan Guasch, Irene Giménez, Ignacio Funes-Ardoiz, Isabel Matheu, Feliu Maseras, Sergio Castillón, Yolanda Díaz, Migu ..., Chemistry - A European Journal, 2018

Regio‐ and stereoselective oxyamination of dienes through a tandem rhodium catalysed aziridination‐nucleophilic opening affords racemic oxazolidinone derivatives, which undergo a kinetic resolution acylation process using ABCs (amidine‐based catalysts) achieving s values up to 117. This protocol ...


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