A5005998653- Asymmetric Hydrogenation and Catalysis
- Surface Chemistry and Catalysis
- Dendrimers and Hyperbranched Polymers
- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Chemical Synthesis and Analysis
- Luminescence and Fluorescent Materials
- Asymmetric Synthesis and Catalysis
- Organic Light-Emitting Diodes Research
- Catalysis for Biomass Conversion
- Carbon dioxide utilization in catalysis
- Supramolecular Self-Assembly in Materials
- Nanomaterials for catalytic reactions
- Catalytic C–H Functionalization Methods
- Organic Electronics and Photovoltaics
- Crystallography and molecular interactions
- Catalysis and Hydrodesulfurization Studies
- Metal-Organic Frameworks: Synthesis and Applications
- Catalytic Cross-Coupling Reactions
- Supramolecular Chemistry and Complexes
- Polydiacetylene-based materials and applications
- N-Heterocyclic Carbenes in Organic and Inorganic Chemistry
- Perovskite Materials and Applications
- Advanced biosensing and bioanalysis techniques
- Ionic liquids properties and applications
Chinese Academy of Sciences
2013-2025
Beijing National Laboratory for Molecular Sciences
2015-2025
Lund University
2022-2025
South China University of Technology
2018-2024
Sichuan University
2023-2024
University of Copenhagen
2023-2024
Institute of Chemistry
2011-2023
Molecular Sciences Institute
2023
University of Chinese Academy of Sciences
2014-2020
Collaborative Innovation Center of Chemical Science and Engineering Tianjin
2014-2017
Asymmetric hydrogenation of quinolines catalyzed by chiral cationic η(6)-arene-N-tosylethylenediamine-Ru(II) complexes have been investigated. A wide range quinoline derivatives, including 2-alkylquinolines, 2-arylquinolines, and 2-functionalized 2,3-disubstituted were efficiently hydrogenated to give 1,2,3,4-tetrahydroquinolines with up >99% ee full conversions. This catalytic protocol is applicable the gram-scale synthesis some biologically active tetrahydroquinolines, such as...
Liquid assets: The catalyst (S,S)-1 exhibits an unprecedented reactivity and excellent enantioselectivity for the title reaction when it is carried out in neat ionic liquid (see scheme; BMIM=1-n-butyl-3-methylimidazolium, Tf=trifluoromethanesulfonyl, Ts=4-toluenesulfonyl). facilitates recycling enhances its stability selectivity.
[reaction: see text] Phosphine dendrimer-stabilized palladium nanoparticles were synthesized and found to be highly effective for Suzuki coupling reactions, affording good excellent product yields, high turnover number (up 65,000), reusability 9 catalytic runs). Furthermore, these Pd are efficient selective catalysts hydrogenations.
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Enantioselective hydrogenation of quinoline derivatives catalyzed by phosphine-free chiral cationic Cp*Ir(OTf)(CF3TsDPEN) complex (CF3TsDPEN = N-(p-trifluoromethylbenzenesulfonyl)-1,2-diphenylethylene-diamine) afforded the 1,2,3,4-tetrahydroquinoline in up to 99% ee. The reaction could be carried out with a substrate-to-catalyst molar ratio as high 1000 undegassed methanol and no need for inert gas protection.
A new poly(benzyl ether) dendritic organogelator Azo-G3 containing azobenzene in its inner layer was designed and synthesized, fully characterized. The dendron found to be a highly efficient versatile toward various apolar polar organic solvents with the critical gelation concentrations (CGCs) approaching 0.05 wt %, indicating that belongs category of supergelators. Further studies revealed intermolecular multiple π–π stacking interactions might responsible for guiding self-assembly...
To date, blue dual fluorescence emission (DFE) has not been realized because of the limited choice chemical moieties and severe geometric deformation DFE emitters leading to strong intramolecular charge transfer (ICT) with a large Stokes shift in excited states. Herein, an emitter (1'r,5'R,7'S)-10-(4-(4,6-diphenyl-1,3,5-triazin-2-yl)phenyl)-10H-spiro [acridine-9,2'-adamantane] (a-DMAc-TRZ) containing novel adamantane-substituted acridine donor is reported, which exhibits unusual DFE. The...
The transition metal complexes containing chiral phosphorus ligands are the most widely and successfully used catalysts in asymmetric hydrogenation of unsaturated compounds. However, a major problem associated with these homogeneous catalytic systems is separation recycling often expensive easily oxidized catalysts. In addition, many reactions still lack efficient catalysts, stereoselectivities substrate-dependent. Therefore, development highly effective recyclable desirable. Over past few...
BArFing it out the other way: A highly enantioselective hydrogenation of 2,4-disubstituted 1,5-benzodiazepines using chiral cationic ruthenium diamine catalysts (R,R)-1 has been developed (see scheme; BArF=tetrakis(3,5-bistrifluoromethylphenyl)borate). Either enantiomer 2,4-diaryl-2,3,4,5-tetrahydro-1H-benzodiazepine derivatives could be obtained by same ligand but in presence a different achiral counteranion. Detailed facts importance to specialist readers are published as "Supporting...
A highly enantioselective synthesis of indolines by asymmetric hydrogenation 1H-indoles and 3H-indoles at ambient temperature pressure, catalyzed chiral phosphine-free cationic ruthenium complexes, has been developed. Excellent enantio- diastereoselectivities (up to >99 % ee, >20:1 d.r.) were obtained for a wide range indole derivatives, including unprotected 2-substituted 2,3-disubstituted 1H-indoles, as well 2-alkyl- 2-aryl-substituted 3H-indoles.
Abstract An aza‐crown ether, modified phosphoramidite ligand, has been designed and synthesized. The ON/OFF reversible switch of catalytic activity for its rhodium catalyst was thoroughly investigated in the asymmetric hydrogenation dehydroamino acid esters modulated by host–guest interactions. In OFF state, is almost inactive (less than 1 % conversion) because formation an intermolecular sandwich complex two ether moities cationic metal center. using alkali‐metal‐cations as trigger, turned...
Sulfone-embedded heterocyclics are of great interest in organic light-emitting diodes (OLEDs), however, exploring highly efficient narrowband emitters based on sulfone-embedded remains challenging. Herein, five with different sulfur valence state and molecular rigidity, namely tP, tCPD, 2tCPD, tPD tPT, thoroughly analysed. With restricted twisting flexible peripheral phenyl by strengthening emission spectra can be enormously narrowed. Further, introducing the sulfone group bending vibration...
Fast spin-flipping is the key to exploit triplet excitons in thermally activated delayed fluorescence based organic light-emitting diodes toward high efficiency, low efficiency roll-off and long operating lifetime. In common donor-acceptor type molecules, distribution of dihedral angles film state would have significant influence on photo-physical properties, which are usually neglected by researches. Herein, we find that excited lifetimes emitters subjected conformation distributions...
Low dimensional perovskite-inspired materials with self-tapped exciton (STE) emission have stimulated a surge of cutting-edge research in optoelectronics. Despite numerous efforts on developing versatile low-dimensional efficient STE emissions, there is little emphasis the intrinsic dynamics STE-based broad these materials. Here, we investigated excited state zero-dimensional (0D) Cs2ZrCl6 nanocrystals (NCs) blue emission. By using femtosecond transient absorption (fs-TA) spectroscopy,...
Abstract High‐quality hosts are indispensable for simultaneously realizing stable, high efficiency, and low roll‐off blue solution‐processed organic light‐emitting diodes (OLEDs). Herein, three solution processable bipolar with successively reduced triplet energies approaching the T 1 state of thermally activated delayed fluorescence (TADF) emitter developed evaluated high‐performance OLED devices. The smaller energy gap between host guest allows quenching long‐lived excitons to reduce...
Due to their strong aromaticity and difficulties in chemo-, regio-, enantioselectivity control, asymmetric hydrogenation of naphthol derivatives 1,2,3,4-tetrahydronaphthols has remained a long-standing challenge. Herein, we report the first example homogeneous catalyzed by tethered rhodium-diamine catalysts, affording wide array optically pure high yields with excellent enantioselectivities (up 98% yield >99% ee). Mechanistic studies experimental computational approaches reveal that...
The phosphine-free chiral cationic Ru(OTf)(TsDPEN)(η6-cymene) complex was found to be an efficient catalyst for the enantioselective hydrogenation of quinolines under more environmentally friendly solvent-free or highly concentrated conditions. Excellent yields and enantioselectivities (up 97% ee) were obtained at only 0.02–0.10 mol% loading.
Flüssig gewinnt: Der Katalysator (S,S)-1 ist in der Titelreaktion außergewöhnlich reaktiv und hoch enantioselektiv, wenn sie einer ionischen Flüssigkeit ausgeführt wird (siehe Schema; BMIM=1-n-Butyl-3-methylimidazolium, Tf=Trifluormethansulfonyl, Ts=4-Toluolsulfonyl). Die ionische erleichtert das Recycling des Katalysators erhöht dessen Stabilität Selektivität. Detailed facts of importance to specialist readers are published as ”Supporting Information”. Such documents peer-reviewed, but not...
Abstract Dendrimer‐stabilized palladium nanoparticles were formed in the reduction of palldium bis(acetylacetonate) [Pd(acac) 2 ] presence phosphine dendrimer ligands using hydrogen tetrahydrofuran. The resulting Pd characterized by TEM, 31 P NMR and MAS NMR. results indicated that dendritic oxidized to oxides. These dendrimer‐stabilized demonstrated be efficient catalysts for Suzuki Stille coupling reactions hydrogenations. wedges served as a stabilizer keeping from aggregating, vehicle...
A range of cyclic N-alkyl imines were efficiently hydrogenated by using a chiral cationic Ru(η6-cymene)(MsDPEN)(BArF) complex (MsDPEN = N-(methanesulfonyl)-1,2-diphenylethylenediamine) in high yields and up to 98% ee. one-pot synthesis 2-phenylpyrrolidine via reductive amination was also developed.
The enantioselective hydrogenation of 2-alkyl- and 2-aryl-subsituted quinoxalines 2,3-disubstituted was developed by using the cationic Ru(η6-cymene)(monosulfonylated diamine)(BArF) system in high yields with up to 99% ee. counteranion found be critically important for enantioselectivity and/or diastereoselectivity.
A 'Phen'atic: The title reaction proceeds in the presence of chiral cationic ruthenium diamine catalyst (R,R)-1 (Tf=trifluoromethanesulfonyl, Ts=4-toluenesulfonyl). Both 1,2,3,4-tetrahydro- and 1,2,3,4,7,8,9,10-octahydro-1,10- phenanthroline derivatives could be obtained high yields with excellent enantio- diastereoselectivity.