A5102839572- Advanced ceramic materials synthesis
- Aluminum Alloys Composites Properties
- Advanced materials and composites
- Boron and Carbon Nanomaterials Research
- Asymmetric Synthesis and Catalysis
- Chemical Synthesis and Analysis
- Bioactive Compounds and Antitumor Agents
- Multicomponent Synthesis of Heterocycles
- Adsorption and biosorption for pollutant removal
- Catalytic C–H Functionalization Methods
- Concrete and Cement Materials Research
- Lignin and Wood Chemistry
- Nanomaterials for catalytic reactions
- Innovative concrete reinforcement materials
- Advanced Synthetic Organic Chemistry
- Additive Manufacturing and 3D Printing Technologies
- Synthetic Organic Chemistry Methods
- Catalytic Processes in Materials Science
- Plasma Diagnostics and Applications
- Electrostatic Discharge in Electronics
- Hydrogels: synthesis, properties, applications
- Morinda citrifolia extract uses
- Concrete Properties and Behavior
- Synthesis and Biological Activity
- Synthesis of Organic Compounds
Northeastern University
2019-2024
Xi'an University of Technology
2021-2024
Kangwon National University
2023-2024
Ministry of Public Security of the People's Republic of China
2024
Xi'an University of Architecture and Technology
2021-2024
Kunming University of Science and Technology
2023
Oak Ridge National Laboratory
2023
Universidad del Noreste
2018
Tsinghua University
2011-2012
Hong Kong Polytechnic University
2011
A short and efficient asymmetric total synthesis of the title compound 1, which is an important neurotransmitter, has been achieved. The features a metal-promoted, enantioselective ene reaction that provides entry into kainic acid ring system from very simple precursors. Moreover, zirconium-mediated Strecker reaction, represents outgrowth earlier amide-to-imine methodology developed in our laboratory, demonstrates remarkable chemoselectivity stereoselectivity.
Lignin, renowned for its abundance of hydroxyl groups, was utilized in three dimensions to fabricate a hydrogel matrix. In this study, the optimal conditions preparation lignin-crosslinked and potential dye antioxidant removal were investigated. The synthesized through cross-linking reaction, with varying amounts agent (poly(ethylene glycol) diglycidyl ether) added adjust lignin content. Chemical structure analysis conducted using Fourier-transform infrared spectroscopy X-ray photoelectron...
The effect of replacing the Brønsted acid in classic Passerini reactions with a mild Lewis has been studied. Triggered by metal-promoted silylation, condensations aliphatic or aromatic carbonyl compounds appropriately substituted isonitriles capable neighboring group donation afford α-hydroxyamides, oxazoles, and other useful heterocycles.
An efficient single-step approach toward the synthesis of 2-alkylquinolines is described. Through a Lewis acid mediated [3 + 3] annulation reaction between 3-ethoxycyclobutanones and aromatic amines, variety multisubstituted 2-alkylquinoline derivatives were prepared regioselectively at room temperature.
Reaction-bonded boron carbide (RBBC) composites have broad application prospects due to their low cost and net size sintering. The microstructure, reaction mechanism of with molten silicon (Si), mechanical properties been substantially studied. However, the strengthening reaction-bonded are still pending question. In this study, dense ceramics were fabricated by liquid Si infiltration B4C-C preforms dispersed carbon black (CB) as source. Polyethyleneimine (PEI) a molecular weight 1800 was...
B 4 C-SiC-Si ceramic composites were fabricated based on molten silicon infiltration method. The influence of preforms ' forming pressure the microstructure and mechanical properties was studied by X-ray diffraction (XRD), scanning electron microscopy (SEM) universal testing machines, etc. results showed that consists C, 12 (C,Si,B) 3 , SiC Si phases. analysis that: volume percent free decreased with increase in pressures. Vikers-hardness increased, while bending strength fracture toughness...
夏 乾, 孙是昊
郑雅雯，张翠萍，张瑞杰
Chitosan, a natural polysaccharide derived from the exoskeletons of shrimp and crabs, has amino hydroxyl groups that provide biocompatibility, biodegradability, antioxidant activity. This study aimed to enhance these properties by preparing chitosan-based Schiff base derivatives (CSB) containing phenolic groups. The formation CSB was confirmed through physical chemical structure analysis, demonstrating enhanced capabilities dye adsorption. Using 2,2-diphenyl-1-picrylhydrazyl (DPPH), activity...
Abstract Recently, biopolymer-based catalysts have been reported frequently due to the advantages of biodegradability, highly efficiency, and low cost. In this work, novel catalyst lignin Schiff base-copper complex (L-SB-Cu) was synthesized, used for methylene blue (MB) 4-nitrophenol (4-NP) reduction in aqueous solutions. The results characterization from elemental analysis, Fourier-transform infrared spectroscopy (FT-IR), gel permeation chromatography (GPC), proton nuclear magnetic...
When the combination of zinc triflate and chlorotrimethylsilane is substituted for a Brønsted acid, classic Passerini reaction carbonyl compounds with t-butyl isonitrile affords an efficient 1:2 condensation product leading to β-hydroxy-α-cyanoenamines 17a-f, which can be transformed into 5-substituted-4-cyanooxazoles 8a-f in one step. In contrast corresponding Ti-mediated condensations isonitrile, no cyanohydrins are formed.