A5042113291- Asymmetric Synthesis and Catalysis
- Catalytic C–H Functionalization Methods
- Synthesis and Catalytic Reactions
- Sulfur-Based Synthesis Techniques
- Soil Carbon and Nitrogen Dynamics
- Climate change impacts on agriculture
- Asymmetric Hydrogenation and Catalysis
- Supercapacitor Materials and Fabrication
- Soil and Water Nutrient Dynamics
- Synthetic Organic Chemistry Methods
- Plant Water Relations and Carbon Dynamics
- Conducting polymers and applications
- Synthesis of Indole Derivatives
- Chemical Synthesis and Analysis
- Advancements in Battery Materials
- Agriculture Sustainability and Environmental Impact
- Chemical Synthesis and Reactions
- Soil and Unsaturated Flow
- Ultrasound Imaging and Elastography
- Electrocatalysts for Energy Conversion
- Soybean genetics and cultivation
- Crop Yield and Soil Fertility
- Ultrasound and Hyperthermia Applications
- Agronomic Practices and Intercropping Systems
- Irrigation Practices and Water Management
Wannan Medical College
2024-2025
Liaocheng University
2018-2025
Ministry of Agriculture and Rural Affairs
2021-2024
China Agricultural University
2013-2024
Nanjing University of Aeronautics and Astronautics
2013-2017
Nanjing Library
2015-2016
Yanshan University
2013
Northwest Minzu University
2007
To improve the energy density of supercapacitors, a new type electrode material with high electrochemical activity and favorable morphology is extremely desired.
Homogeneous ZnCo<sub>2</sub>O<sub>4</sub> nanoflowers have been synthesized on a 3D layered structure of carbon nanotubes/nitrogen-doped graphene (NGN/CNTs) film by hydrothermal process and subsequent calcination method.
Phosphine-catalyzed [2 + 4] annulation of allenoates with thiazolone-derived alkenes has been achieved under mild conditions, giving biologically important 6,7-dihydro-5H-pyrano[2,3-d]thiazole derivatives in high to excellent yields. With the use Kwon's phosphine as chiral catalyst, optically active products were obtained good yields enantioselectivities.
Abstract Enantioselective synthesis of chiral quinazoline‐based heterocycles is achieved through a phosphine‐catalyzed [3+3] annulation reaction 1,3‐dipoles with Morita−Baylis−Hillman carbonates. The proceeds smoothly under mild conditions to give various heterocyclic compounds in high yields excellent diastereoselectivities and enantioselectivities. Further diverse elaborations the products work well produce novel tetrahydroquinazoline derivatives. magnified image
The Cu(I)-catalyzed highly enantioselective [3 + 3] cycloaddition between two different 1,3-dipoles, phthalazinium dicyanomethanides and iminoester-derived azomethine ylides, has been achieved under mild reaction conditions, providing novel chiral heterocyclic compounds, 2,3,4,11b-tetrahydro-1H-pyrazino[2,1-a]phthalazine derivatives, in high yields with excellent diastereo- enantioselectivies (up to 99% yield, ee, >20:1 dr).
A bifunctional phosphine-catalyzed highly enantioselective [2+4] cycloaddition of α-substituted allenoates with (E)-1-benzyl-4-olefinicpyrrolidine-2,3-diones has been achieved, giving pyrrolidin-2-one fused dihydropyran derivatives in moderate to good yields excellent enantioselectivities (up 98% ee). This reaction provides a useful catalytic asymmetric access structural motifs.
Phosphine-catalyzed [4+1] annulation of 2-tosylaminochalcones with allenoates has been achieved, giving <italic>trans</italic>-2,3-disubstitued indolines as major diastereoisomers in moderate to good yields.
α-succinimide-substituted allenoates were employed as phosphine acceptors in phosphine-catalyzed (4 + 2) annulation with 1,1-dicyanoalkenes. They served C4 synthons the reaction under mild conditions and produced hexahydroisoindole derivatives moderate to high yields good excellent diastereoselectivities.
In this paper, a phosphine-catalyzed [8 + 2]-annulation of heptafulvene with allenoates has been achieved under mild conditions, giving functionalized bicyclo[5.3.0]decane derivatives in moderate to excellent yields. Using chiral phosphine as the catalyst, optically active products were obtained high yields enantioselectivities.
This study aimed to develop a Least Absolute Shrinkage and Selection Operator (LASSO) logistic regression (LR) model using quantitative imaging features from Shear Wave Elastography (SWE) Contrast-Enhanced Ultrasound (CEUS) assess the malignancy risk of BI-RADS 4 breast lesions (BLs). The predictive in LASSO analysis were used construct nomogram. Female patients (n = 111) with BLs detected via routine ultrasound at Ma'anshan People's Hospital underwent SWE, CEUS, histopathological...
A multifunctional chiral phosphine-catalyzed enantioselective [3+2] annulation of Morita-Baylis-Hillman carbonates with cyclopentenones provides a direct approach to access functional 4-oxo-1,3a,4,5,6,6a-hexahydropentalene compounds. Moderate good yields and excellent enantioselectivities (>90% ee) were obtained for series substrates under mild reaction conditions.
Lewis base-catalyzed cascade nucleophilic/aza-Michael addition reaction of N-alkoxy β-oxo-acrylamides with isocyanates has been developed to afford various highly functionalized hydantoin derivatives in 80-98% yields under mild conditions. The intriguing features this method include metal-free conditions, low catalyst loading, broad substrate scope and short time.