Papers: Envíos recientes
Mostrando ítems 341-360 de 1293
Magnetic and electrical bistability in hybrid composites of conducting organic polymers with [Fe(NH2-trz)3]n[SO4]n
Spin crossover (SCO) species hold significant potential as versatile building blocks for multifunctional hybrid materials. In our recent work, we introduced a novel postsynthetic mechanochemical processing approach to ...
Late-Stage Aryl C−H Bond Cyclopropenylation with Cyclopropenium Cations
Herein, we disclose the first regio-, site- and chemoselective late-stage (hetero)aryl C−H bond cyclopropenylation with cyclopropenium cations (CPCs). The process is fast, operationally simple and shows an excellent ...
Cluster Preface: Special Issue Honoring Masahiro Murakami’s Contributions to Science
Ruben Martin (left) was born in Barcelona in 1976. After receiving his PhD at the Universitat de Barcelona with Prof. Antoni Riera, he moved in January 2004 to the Max-Planck-Institut für Kohlenforschung, Mülheim, as a ...
TAMOF-1 as a Versatile and Predictable Chiral Stationary Phase for the Resolution of Racemic Mixtures
Metal–organic frameworks (MOFs) have become promising materials for multiple applications due to their controlled dimensionality and tunable properties. The incorporation of chirality into their frameworks opens new ...
Gold(I)-Catalyzed1,6-Enyne Single-Cleavage Rearrangements:The Complete Picture
We identify the factors that rule the selectivity in single-cleavage skeletal rearrangements promoted by gold(I) catalysts. We find that stereoconvergence is enabled by a rotational equilibrium when electron-rich substituents ...
Gold(I)-Catalyzed Intermolecular Aryloxyvinylation with Acetylene Gas
Acetylene gas is an important feedstock for chemical production, although it is underutilized in organic synthesis. We have developed an intermolecular gold(I)-catalyzed alkyne/alkene reaction of o-allylphenols with acetylene ...
Synthesis and characterization of highly diluted polyanionic iron(II) spin crossover systems
Spin crossover (SCO) complexes, through their reversible spin transition under external stimuli, can work as switchable memory materials. Here, we present a protocol for the synthesis and characterization of a specific ...
Oxidovanadium(IV) sulfate catalyses light-driven C–N bond formation
Oxidovanadium(IV) sulfate, VIVOSO4, is shown to catalyze efficiently the amidation of the C–H bond of aldehydes by N-chloramine derivatives for the selective synthesis of amides. The catalytic process is driven by visible ...
Hydrogen-Bonded Matched Ion Pair Gold(I) Catalysis
The enantioselective reaction of 1,6-enynes with O-, N-, and C-nucleophiles has been developed by matched ion pair gold(I) catalysis in which the chiral gold(I) cation and anion are H-bonded through a urea group. Very high ...
A Robust Heterodimeric Bis-Rh(III)-Porphyrin Macrocycle for the Self-Assembly of a Kinetically Stable [2]-Rotaxane
We report the self-assembly of a robust di-nuclear tetralactam macrocyle based on two symmetric components: a Rh(III) bis-porphyrin and a bis-pyridyl ligand. We probe the binding properties of the tetralactam macrocycle ...
The role of polaronic states in the enhancement of CO oxidation by single-atom Pt/CeO2
Single Atom Catalysts (SACs) have shown that the miniaturization of the active site implies new phenomena like dynamic charge transfer between isolated metal atoms and the oxide. To obtain direct proof of this character ...
Micromolar Affinity and Higher: Synthetic Host–Guest Complexes with High Stabilities
The design of high-affinity synthetic host–guest complexes is of paramount importance because they are key elements in constructing unprecedented supramolecular assemblies, functional materials, molecular probes, artificial ...
A General Light-Driven Organocatalytic Platform for the Activation of Inert Substrates
Due to their strong covalent bonds and low reduction potentials, activating inert substrates is challenging. Recent advances in photoredox catalysis offered a number of solutions, each of which useful for activating specific ...
Charge-controlled Pd catalysis enables the meta-C–H activation and olefination of arenes
The regioselective C–H activation of arenes remains one of the most promising techniques for accessing highly important functionalized motifs. Such functionalizations can generally be achieved through directed and non-directed ...
1,2-Arylsulfonylation of Vinyl Ethers and Esters Enabled by Dual Ni Catalysis
A dual photocatalytic sulfonylation-arylation of electron-rich alkenes is described. By combining sulfinate salts, (hetero)-aryl-bromides and 2,3-dihydrofuran under Ru and Ni dual catalysis, over 35 examples of aryl-sulfonylated ...
Copper-Catalyzed C(sp3)-Amination of Ketone-Derived Dihydroquinazolinones by Aromatization-Driven C−C Bond Scission
Herein, we describe the development of a copper-catalyzed C(sp3)-amination of proaromatic dihydroquinazolinones derived from ketones. The reaction is enabled by the intermediacy of open-shell species arising from homolytic ...
Exploring innovative designs and heterojunctions in photocatalytic micromotors
Photocatalytic micromotors that convert light energy into mechanical energy have garnered increased interest due to their fast photoactivation, and potential for precise control and manipulation. This feature article ...
Substituent effects on aromatic interactions in water
Molecular recognition in water involves contributions due to polar functional group interactions, partial desolvation of polar and non-polar surfaces and changes in conformational flexibility, presenting a challenge for ...
Enantioselective Catalysis with Pyrrolidinyl Gold(I) Complexes: DFT and NEST Analysis of the Chiral Binding Pocket
A new generation of chiral gold(I) catalysts based on variations of complexes with JohnPhos-type ligands with a remote C2-symmetric 2,5-diarylpyrrolidine have been synthesized with different substitutions at the top and ...
Factors driving the Ni/Cu cooperative asymmetric propargylation of aldimine esters
The factors driving the Ni0(binap)/CuI(phospherrox) cooperative asymmetric propargylation of aldimine esters are unveiled through DFT calculations. The system is fully explored accounting for conformational complexity and ...
