Chemistry: A European Journal
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#1Jean-Luc Vasse (CNRS: French National Centre for Scientific Research)H-Index: 15
Last. Jean-Bernard BehrH-Index: 16
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The diastereoselective access to cyclopentanols and N,O-dimethylcyclopentylhydroxylamines from 4-pentenoic acid-derived Weinreb amides is described. Based on the concomitant generation of both the nucleophilic and the electrophilic poles by hydrozirconation of the amide and the C=C double bond, the cyclisation may be tuned towards cyclopentanols or N,O-dimethylcyclopentylhydroxylamines depending on the ring-closure promotor. An extension to cis 3-substituted N,O-dimethylcyclohexylhydroxylamines ...
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#1Chuan-Feng Chen (CAS: Chinese Academy of Sciences)H-Index: 62
#2Meng Li (CAS: Chinese Academy of Sciences)H-Index: 24
A promising strategy of thermally activated delayed fluorescence (TADF) sensitized circularly polarized luminescence (CPL) has been proposed for improving the electroluminescence efficiencies of circularly polarized fluorescent emitters. Compared with chiral TADF emitters which suffer from the dilemma of small ΔEST accompanied by small kr , the TADF-sensitized CPL (TSCP) strategy using TADF molecules as sensitizers and CP-FL molecules as emitters might be the most promising method to construct h...
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#1Hendrik V. Schröder (Princeton University)H-Index: 13
#2Michael Stadlmeier (Princeton University)H-Index: 5
Last. A. James Link (Princeton University)H-Index: 30
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The lasso peptide benenodin-1, a naturally occurring and bacterially produced [1]rotaxane, undergoes a reversible zip tie-like motion under heat activation, in which a peptidic wheel stepwise translates along a molecular thread in a cascade of "tail/loop pulling" equilibria. Conformational and structural analyses of four translational isomers, in solution and in the gas phase, reveal that the equilibrium distribution is controlled by mechanical and non-covalent forces within the lasso peptide. F...
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#1Karolis Norvaiša (TCD: Trinity College Dublin)H-Index: 6
#2Sophie Maguire (TCD: Trinity College Dublin)
Last. Mathias O. Senge (TCD: Trinity College Dublin)H-Index: 63
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Inspired by the rigidified architecture of 'picket-fence' systems, we propose a strategy utilizing strain to impose intramolecular tension in already peripherally overcrowded structures leading to selective atropisomeric conversion. Employing this approach, tuneable shape-persistent porphyrin conformations were acquired exhibiting distinctive supramolecular nanostructures based on the orientation of the peripheral groups. The intrinsic assemblies driven by non-covalent bonding interactions form ...
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#1Mareen Stahlberger (KIT: Karlsruhe Institute of Technology)H-Index: 1
#2Noah Schwarz (KIT: Karlsruhe Institute of Technology)
Last. Stefan Bräse (KIT: Karlsruhe Institute of Technology)H-Index: 83
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This report describes the synthesis of a [2.2]paracyclophane-derived annulated 3-amino-imidazole ligand library via a Groebke-Blackburn-Bienayme three-component reaction (GBB-3CR) employing formyl-cyclophanes in combination with diverse aliphatic and aromatic isocyanides and heteroaromatic amidines. The GBB-3CR gives access to differently functionalized skeletally-diverse cyclophanyl imidazole ligands, namely 3-amino-imidazo[1,2- a ]pyridines and imidazo[1,2- a ]pyrazines. Additionally, a one-po...
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#1Florenz Buß (WWU: University of Münster)H-Index: 7
#2Maike B. RöthelH-Index: 1
Last. Fabian DielmannH-Index: 21
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We report the synthesis and properties of the much sought-after tris(1,1,3,3-tetramethylguanidinyl) phosphine P(tmg) 3 , a crystalline, superbasic phosphine accessible through a short and scalable procedure from the cheap and commercially available bulk chemicals 1,1,3,3-tetramethylguanidine, tris(dimethylamino)phosphine and phosphorus trichloride. The new phosphine exhibits exceptional electron donor properties and readily forms transition metal complexes with gold(I), palladium(II) and rhodium...
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#1Peter Comba (Interdisciplinary Center for Scientific Computing)H-Index: 69
#2Katharina Bleher (Heidelberg University)
Last. Shuyi Yang (Heidelberg University)
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Oxidation of the iron(II) precursor [(L 1 )Fe II Cl 2 ] with soluble iodosylbenzene s PhIO, where L 1 is a tetradentate bispidine, leads to the extremely reactive ferryl oxidant [(L 1 )(Cl)Fe IV =O] + with a cis disposition of the chlorido and oxido coligands as observed in nonheme halogenase enzymes. Experimental data indicate that, with cyclohexane as substrate, there is selective formation of chlorocyclohexane, where the halogenation is initiated by C-H abstraction and the result of a rebound...
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#1Lukas Fritz (TUM: Technical University of Munich)
#2Sebastian Wienhold (TUM: Technical University of Munich)
Last. Thorsten Bach (TUM: Technical University of Munich)H-Index: 68
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A synthetic route to the pulvomycin class of natural products is presented, which culminated in the first synthesis of a pulvomycin, pulvomycin D. Key elements of the strategy include a pivotal aldol reaction which led to bond formation between the C24-C40 and the C8-C23 fragment. The remaining C1-C7 fragment was attached by a Yamaguchi esterification completing the assembly of the 40 carbon atoms within the main skeleton. Ring closure to the 22-membered lactone ring was achieved in the final st...
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#1Yun-Fang Zhang (NCU: Nanchang University)
#2Fang-Fang Di (NCU: Nanchang University)
Last. Ren-Gen Xiong (NCU: Nanchang University)H-Index: 6
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In recent years, molecular ferroelectrics have received great attention due to their low weight, mechanical flexibility, easy preparation and excellent ferroelectric properties. Among them, crown-ether-based molecular ferroelectrics, which are typically composed of the host crown ethers, the guest cations anchored in the crown ethers, and the counterions, are of great interest because of the host-guest structure. Such a structure allows the components to occur order-disorder transition easily, w...
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#1Krishnamoorthy Sathiyan (Ariel University)H-Index: 1
#2Ronen Bar-ZivH-Index: 14
Last. Tomer Zidki (Ariel University)H-Index: 10
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