Synthesis and Modification of Polymers by Thiol-Phenylsulfone Substitution Reaction

2022 ◽  
Author(s):  
Hanying Zhao ◽  
Lun Wang ◽  
Qianyu Yu ◽  
Li Liu
Keyword(s):  
Functional Groups ◽  
Chemical Reactions ◽  
Substitution Reaction ◽  
The Past ◽  
Highly Efficient

Thiol chemistry is a type of highly efficient chemical reactions between thiols and functional groups. During the past two decades, thiol chemistry has been widely applied in the synthesis and...

New highly efficient coulometric cell with homogenous potential distribution on the working electrode

1986 ◽  
Vol 51 (3) ◽  
pp. 636-642
Author(s):  
Michal Németh ◽  
Ján Mocák
Keyword(s):  
Chemical Reactions ◽  
Potential Distribution ◽  
Anaerobic Conditions ◽  
Highly Efficient ◽  
Working Electrode ◽  
Constant Potential ◽  
Quantitative Analyses ◽  
Mechanism And Kinetics ◽  
Kinetics Of

A highly efficient coulometric cell was designed and constructed, ensuring a constant potential over the whole surface of the working electrode and suitable for very rapid electrolysis. It consists of concentric cylindrical Teflon parts; also the working and auxiliary electrodes are cylindrical and concentric. Electrolysis can be carried out under anaerobic conditions. Functioning of the cell was tested on the oxidation of hexacyanoferrate(II) and chlorpromazine and reduction of hexacyanoferrate(III). The new cell is suitable for routine quantitative analyses and in studying the mechanism and kinetics of moderately rapid chemical reactions.

LBE for Generalized Hydrodynamics

2018 ◽  
Author(s):  
Sauro Succi
Keyword(s):  
Potential Energy ◽  
Electric Fields ◽  
Chemical Reactions ◽  
Soft Matter ◽  
Fluid Motion ◽  
Life Sciences ◽  
Scientific Discipline ◽  
The Past ◽  
Generalized Hydrodynamics ◽  
Internal Forces

This chapter presents the main techniques to incorporate the effects of external and/or internal forces within the LB formalism. This is a very important task, for it permits us to access a wide body of generalized hydrodynamic applications whereby fluid motion couples to a variety of additional physical aspects, such as gravitational and electric fields, potential energy interactions, chemical reactions and many others. It should be emphasized that while hosting a broader and richer phenomenology than “plain” hydrodynamics, generalized hydrodynamics still fits the hydrodynamic picture of weak departure from suitably generalized local equilibria. This class is all but an academic curiosity; for instance, it is central to the fast-growing science of Soft Matter, a scientific discipline which has received an impressive boost in the past decades, under the drive of micro- and nanotechnological developments and major strides in biology and life sciences at large.

scholarly journals Unprecedented Coordination-Induced Bright Red Emission from Group 12 Metal-Bound Triarylazoimidazoles

Molecules ◽  
2021 ◽  
Vol 26 (6) ◽  
pp. 1739
Author(s):  
Artyom A. Astafiev ◽  
Olga V. Repina ◽  
Boris S. Tupertsev ◽  
Alexey A. Nazarov ◽  
Maria R. Gonchar ◽  
...  
Keyword(s):  
Visible Light ◽  
Metal Complexes ◽  
Scientific Literature ◽  
Photo Luminescence ◽  
Red Emission ◽  
The Past ◽  
Highly Efficient ◽  
Luminescence Emission ◽  
New Family ◽  
Group 12

Arylazoimidazoles are important dyes which were intensively studied in the past. In contrast, triarylazoimidazoles (derivatives which carry aryl substituents at the imidazole core) received almost no attention in the scientific literature. Here, we report a new family of simple and easily accessible triarylazoimidazole-group 12 metal complexes, which feature highly efficient photo-luminescence emission (Φ up to  0.44). Novel compounds exhibit bright red emission in solution, which could be excited with a visible light.

A general concept for highly efficient covalent laser patterning of graphene based on silver carboxylates

2021 ◽  
Author(s):  
Tao Wei ◽  
Xin Liu ◽  
Sabrin Al-Fogra ◽  
Julien Bachmann ◽  
Frank Hauke ◽  
...  
Keyword(s):  
Functional Groups ◽  
General Concept ◽  
Laser Writing ◽  
Laser Patterning ◽  
Highly Efficient ◽  
Spatially Resolved

Spatially resolved graphene architectures GA, GB, and GC containing different functional groups were efficiently constructed by a novel developed laser-writing concept.

The cascade catalysis of the porphyrinic zirconium metal-organic framework PCN-224-Cu for CO2 conversion to alcohols

2021 ◽  
Author(s):  
Shi-Chao Qi ◽  
Zhi-Hui Yang ◽  
Rong-Rong Zhu ◽  
Xiao-Jie Lu ◽  
Ding-Ming Xue ◽  
...  
Keyword(s):  
Metal Organic Framework ◽  
Co2 Conversion ◽  
Cascade System ◽  
The Past ◽  
Highly Efficient ◽  
Metal Organic ◽  
Zirconium Metal ◽  
Organic Framework ◽  
Cascade Catalysis

Reproducing the highly efficient catalytic cascade system to mimic life behaviors in vitro has been intensively investigated over the past few decades. However, except the biocatalysis with enzymes, most chemocatalytic...

The Hot Iodine Substitution Reaction in Gaseous Methyl Iodide

1964 ◽  
Vol 2 (3) ◽  
Author(s):  
R.J. Cross ◽  
R.L. Wolfgang
Keyword(s):  
Methyl Iodide ◽  
Chemical Reactions ◽  
Substitution Reaction ◽  
Emission Process ◽  
Atomic Iodine

SummaryChemical reactions of hot atomic iodine formed by recoil from a photoneutron emission process, (γ, n) have been studied. The yield of the hot substitution,

scholarly journals Advances in the Preparation of Fluorinated Isoquinolines: A Decade of Progress

2017 ◽  
Vol 2017 ◽  
pp. 1-15 ◽  
Author(s):  
Joseph C. Sloop
Keyword(s):  
Transition Metal ◽  
Functional Groups ◽  
Synthetic Methods ◽  
Ring Systems ◽  
Heterocyclic Molecules ◽  
The Past ◽  
Ring Assembly ◽  
Metal Catalyzed ◽  
Synthetic Approaches ◽  
Isoquinoline Derivatives

Heterocyclic molecules incorporating fluorinated isoquinoline components are found in many medicinally and agriculturally important bioactive products as well as industrially impactful materials. Within the past decade, a variety of isoquinolinic ring assembly techniques has enabled the introduction of diverse fluorine-containing functionalities which can enhance potential bioactivity and industrial utility. This review examines recent noncatalyzed and transition metal catalyzed synthetic approaches to the assembly of isoquinoline derivatives that are ring-fluorinated and/or result in the incorporation of fluorine-containing functional groups. Specifically, efficient synthetic methods and regioselectivity in the incorporation of functional groups into isoquinoline ring systems are examined.

Impact of EGR on the surface functional groups of diesel engine particles based on NEXAFS

RSC Advances ◽  
2016 ◽  
Vol 6 (62) ◽  
pp. 57363-57370 ◽  
Author(s):  
Y. Zhao ◽  
Z. Wang ◽  
G. J. Xu ◽  
M. D. Li
Keyword(s):  
Diesel Engine ◽  
Functional Groups ◽  
Chemical Reactions ◽  
Surface Functional Groups ◽  
Chemical Effects ◽  
Physical And Chemical ◽  
Thermal Dilution

The thermal, dilution and chemical effects of EGR result in relatively significant changes in the formation environment, in the physical and chemical reactions of particles and in the functional groups of the matter that constitutes the particles.

scholarly journals Bi(NO3)3 · 5H2O mediated synthesis of 4,4′-diaminotriarylmethane leuco malachite compounds under solvent-free conditions

2009 ◽  
Vol 7 (1) ◽  
pp. 138-142 ◽  
Author(s):  
Ghasem Bardajee ◽  
Farnaz Jafarpour
Keyword(s):  
Functional Groups ◽  
Substitution Reaction ◽  
Solvent Free ◽  
Synthesis And Characterization ◽  
Electrophilic Aromatic Substitution ◽  
Aromatic Substitution ◽  
Aryl Aldehydes ◽  
Solvent Free Conditions

AbstractIn this report, we described the synthesis and characterization of a variety of diaminotriarylmethane derivatives with dimethylamino functional groups. These compounds were synthesized by the tandem regio-selective electrophilic aromatic substitution reaction of N,N-dimethylaniline with aryl aldehydes to form the corresponding diaminotriarylmethane compounds. In our strategy, Bi(NO3)3 was used as a catalyst under solvent free conditions to afford the desired products in good to excellent yields.

Highly Efficient Synthesis of Multi-Substituted Allenes from Propargyl­ Acetates and Organoaluminum Reagents Mediated by Palladium

Synthesis ◽  
2017 ◽  
Vol 49 (16) ◽  
pp. 3643-3653 ◽  
Author(s):  
Qinghan Li ◽  
Zhen Zhang ◽  
Xuebei Shao ◽  
Gang Zhang ◽  
Xinying Li
Keyword(s):  
Efficient Method ◽  
Substitution Reaction ◽  
Efficient Synthesis ◽  
Highly Efficient

A simple and mild catalytic SN2′ substitution reaction of propargyl acetates with organoaluminum reagents is reported. The SN2′ substitution reaction of propargyl acetates with organoaluminum reagents mediated by Pd(PhP3)2Cl2 (1 mol%)/PPh3 (2 mol%)/K2CO3 in tetrahydrofuran at 60 °C for 3–4 hours afforded the corresponding multi-substituted allenes in good yields (up to 94%) with high selectivities (up to 99%). The process was simple and easily performed, which offers an efficient method to synthesize the multi-substituted allene derivatives.

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