A5064584574- Crystallization and Solubility Studies
- X-ray Diffraction in Crystallography
- Catalytic C–H Functionalization Methods
- Flame retardant materials and properties
- Sulfur-Based Synthesis Techniques
- Catalytic Cross-Coupling Reactions
- Polydiacetylene-based materials and applications
- Fire Detection and Safety Systems
- Asymmetric Synthesis and Catalysis
- Asymmetric Hydrogenation and Catalysis
- Radical Photochemical Reactions
- Axial and Atropisomeric Chirality Synthesis
- Advanced Sensor and Energy Harvesting Materials
- Synthesis and Catalytic Reactions
- Ammonia Synthesis and Nitrogen Reduction
- Synthetic Organic Chemistry Methods
- Photochemistry and Electron Transfer Studies
- Chemical Thermodynamics and Molecular Structure
- Alkaloids: synthesis and pharmacology
- Context-Aware Activity Recognition Systems
- Video Surveillance and Tracking Methods
- Cyclopropane Reaction Mechanisms
- Carbon and Quantum Dots Applications
- Chemical synthesis and alkaloids
- Chemical Reactions and Isotopes
Zhejiang University
2022-2025
State Key Laboratory of Clean Energy Utilization
2022-2024
Wuhan University of Technology
2022-2024
Inner Mongolia University
2017
Cyclopropanes bearing contiguous all-carbon quaternary centers continue to attract attention due their bioactivities. However, methods obtain cyclopropanes with remain largely unexplored the high steric hindrance of these compounds. Herein, we report a visible-light-mediated energy-transfer (EnT) strategy realize in situ donor/donor carbenes from readily available N-tosylhydrazones, facilitating synthesis highly congested EWG-free cyclopropanes. Through this approach, are rapidly installed...
The current benchmark study is focused on determining the most precise theoretical method for optimizing geometry of transition metal-dinitrogen complexes. To accomplish this goal, seven density functional (DF) methods from five distinct classes theory (DFT) have been selected, including B3LYP-D3(BJ), BP86-D3(BJ), PBE0-D3(BJ), ωB97X-D, M06, M06-L, and TPSSh-D3(BJ). These DFs will be utilized with Karlsruhe basis set (def2-SVP). carry out study, a total forty-two structurally diverse...
Abstract Alkylamines are ubiquitous in pharmaceuticals, materials and agrochemicals. The Mannich reaction is a well-known three-component for preparing alkylamines has been widely used academic research industry. However, the nucleophilic components this process rely on C(sp 2 )−H activated 3 bonds while unactivated involved alkylamination long-standing challenge. Here, we report an unprecedented multicomponent double both benzylic bonds. In process, various 3-alkylbenzofurans, formaldehyde...
Transition-metal-catalyzed cross-coupling reactions have revolutionized synthetic approaches for forging C-C bonds. However, catalytic enantioconvergent couplings of racemic secondary organometallics with aryl electrophiles remain a significant challenge. We herein describe rare Pd-catalyzed coupling sec-alkylzinc reagents halides, providing range enantioenriched 1,1-diarylalkane products in excellent yield (up to 99%) and high enantioselectivity 95.5:4.5 er). The reaction showed broad...
Splitting of N2 via six-electron reduction and further functionalization to value-added products is one the most important challenging chemical transformations in fixation. However, splitting approaches rely on strong or electrochemical generate highly reactive metal species bind activate N2, which often incompatible with functionalizing agents. Catalytic sustainable produce nitrides under mild conditions may create efficient straightforward methods for N-containing organic compounds....
The activation of dinitrogen (N2) and direct incorporation its N atom into C-H bonds to create aliphatic C-N compounds remains unresolved. Incompatible conditions between reduction functionalization make this process extremely challenging. Herein, we report the first example insertion an Csp3-H bond on ligand scaffold a 1,3-propane-bridged [N2N]2--type dititanium complex. Mechanistic investigations behaviors dinuclear mononuclear Ti complexes indicated intramolecular synergistic effect two...
Direct synthesis of olefins continues to attract stellar attention due the high importance olefins. In this context, wide availability ketones, directly from ketones provides a straightforward route. Considering this, via formation donor/donor type carbenes has been developed which leads efficient versatile by using metal-free strategy. This approach features mild reaction conditions and exhibits broad substrate scope when biomass-derived solvent as green media is used. The practical utility...
In order to improve the accuracy of Indoor Human Activity Recognition based on spatial location information, we proposed a recognition method using convolutional neural network(CNN). We pre-process raw data and transfer them into motion feature, frequency feature statistic feature. These features are input CNN do local analysis. After that, got characteristic output items, which have be processed by Softmax classifier, can recognize six activities, including walking, sitting, lying,...
The authors report a highly efficient thiophosphoramidate bifunctional catalyst 1a based on the pyrrolidine backbone for Michael reaction of ketones to nitroolefins. Various nitro-olefins are tolerated with excellent diastereoselectivity and enantioselectivity. Inferior catalytic performance was observed by using an oxo analogue 1b which might be related its acidity.
Post‐transition state bifurcation (PTSB) has received wide attention in the field of reaction mechanism research due to its role producing nonstatistical selectivity, which cannot be solely explained by transition theory. Particularly, even subtle molecular motions such as bond torsion can precipitate PTSB, thereby significantly complicating quantitative understanding dynamic selectivity. In this work, we found that radical addition allenes is an elementary transformation generally exhibits...
A pair of enantiomers is known to have different biological activities. Two catalysts with opposite chirality are nearly always required deliver both enantiomeric products. In this work, chiral rhodium(III) cyclopentadienyl complexes repurposed as efficient for enantiodivergent and atroposelective hydroamination sterically hindered alkynes. Products been obtained using the same or closely analogous catalyst in good efficiency excellent enantioselectivity, enantiodivergence was mainly enabled...