Results 31 to 40 of about 44,905 (302)

Kinetics of Quaternary Ammonium Salts Synthesis

open access: yesProceedings of the International Conference on Applied Innovations in IT
The aim of this work is to study the synthesis of quaternary ammonium compounds based on olefins and to investigate the structure and properties of the obtained products.
Feruza Makhmudova, Oytura Maksumova
doaj   +1 more source

A Simple Halide-to-Anion Exchange Method for Heteroaromatic Salts and Ionic Liquids

open access: yesMolecules, 2012
A broad and simple method permitted halide ions in quaternary heteroaromatic and ammonium salts to be exchanged for a variety of anions using an anion exchange resin (A− form) in non-aqueous media.
Neus Mesquida   +3 more
doaj   +1 more source

Catalysis by tertiary chalcogenonium salts

open access: yesTetrahedron Chem, 2023
The synthetic utility of onium salts is widely recognized in organic chemistry. Among the wide variety of onium salt compounds, quaternary ammonium and phosphonium salts are known as representative organocatalysts.
Ken Okuno   +2 more
doaj   +1 more source

Reaction of N,N-Dimethyltryptamine with Dichloromethane Under Common Experimental Conditions. [PDF]

open access: yes, 2018
A large number of clinically used drugs and experimental pharmaceuticals possess the N,N-dimethyltryptamine (DMT) structural core. Previous reports have described the reaction of this motif with dichloromethane (DCM), a common laboratory solvent used ...
Dunlap, Lee E, Olson, David E
core   +3 more sources

Synthesis, Purification and Characterization of Polymerizable Multifunctional Quaternary Ammonium Compounds

open access: yesMolecules, 2019
Methacrylate analogs of quaternary ammonium salts functionalized with carboxylic (AMadh1 68.8% yield, AMadh2 53.2% yield) and methoxysilane (AMsil1 94.8% yield, AMsil2 36.0% yield) groups were synthesized via Menschutkin reaction.
Ugochukwu C. Okeke   +2 more
doaj   +1 more source

Tetraalkylammonium and phosphonium salt for asphaltene dispersion; experimental studies on interaction mechanisms

open access: yesEgyptian Journal of Petroleum, 2022
Asphaltenes deposition is one of the most severe problems in the petroleum industry, imposing high costs on oil producer companies. The use of chemical dispersants reduces the risk of asphaltene deposition.
Shirin Baghersaei   +3 more
doaj   +1 more source

Metal organic ionic framework based on the ionic metal complex and organic moiety as counter ion: A review

open access: yesHybrid Advances, 2022
Metal organic ionic frameworks (MOIFs) or inorgano-organic salts (IOSs) are the product of an ionic interaction between metal ionic complex and opposite organic ion in water, through ion exchange mechanism.
Rakesh Kumar Ameta
doaj   +1 more source

Measurement and PC-SAFT modeling of solid-liquid equilibrium of deep eutectic solvents of quaternary ammonium chlorides and carboxylic acids [PDF]

open access: yes, 2017
In this study the solid-liquid equilibria (SLE) of 15 binary mixtures composed of one of three different symmetrical quaternary ammonium chlorides and one of five different fatty acids were measured. The experimental data obtained showed extreme negative
Batista, Eduardo A.C.   +11 more
core   +1 more source

Synthesis of Quinacridone Derivatives and Their Application as High Performance Levelers in Electroplating

open access: yesElectrochemistry
A series of quaternary ammonium salts base on quinacridone aromatic ring were synthesized using 2,9-quinacridone as the parent material, and their leveling performance were evaluated using constant-current chronoamperometry addition curves. Additionally,
Peikun ZOU   +5 more
doaj   +1 more source

Synthesis, characterization, and bioactivity of rosin quaternary ammonium salt derivatives [PDF]

open access: yesBioResources, 2013
Two series of rosin quaternary ammonium salts (QAS) were synthesized using the same path. The structure of the target products was characterized by HPLC, MS, IR, and 1HNMR, and the bioactivity was determined by filter paper method using Trametes ...
Tao Liang   +3 more
doaj  

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