Results 21 to 30 of about 476,117 (197)

Synthesis of Novel Quaternary Ammonium Salts and Their in Vitro Antileishmanial Activity and U-937 Cell Cytotoxicity

Molecules, 2016
This work describes the synthesis of a series of quaternary ammonium salts and the assessment of their in vitro antileishmanial activity and cytotoxicity.
Sandra M. Duque-Benítez, Luz Amalia Ríos-Vásquez, Rogelio Ocampo-Cardona, David L. Cedeño, Marjorie A. Jones, Iván D. Vélez, Sara M. Robledo   +6 more
doaj   +1 more source

Gemini alkyldeoxy-D-glucitolammonium salts as modern surfactants and microbiocides: synthesis, antimicrobial and surface activity, biodegradation. [PDF]

PLoS ONE, 2014
Dimeric quaternary alkylammonium salts possess a favourable surface and antimicrobial activity. In this paper we describe synthesis, spectroscopic analysis, surface and antimicrobial activity as well as biodegradability of polymethylene-α,ω-bis(N,N ...
Bogumił Brycki, Adrianna Szulc
doaj   +1 more source

Selective Recognition of Quaternary Ammonium Cations [PDF]

, 2023
Selective recognition of ammonium cations fundamentally relies on their degree of substitution. In biological systems, proteins can preferentially bind more substituted ammonium cations over less substituted homologues.
Abby, Haworth, Emma, Winful, Dmitry, Yufit, Clare, Mahon, Matthew, Kitching, Emma, Wolpert, Emanuella, Fiandra, Callum , Begg, Karen, Johnston, Kim, Jelfs, Mark , Walsh, Joseph, Phelps   +11 more
core   +2 more sources

Degradation Kinetics and Solvent Effects of Various Long-Chain Quaternary Ammonium Salts [PDF]

, 2021
Surfactants such as quaternary ammonium salts (QAS) have been in increasing demand, for emerging new applications. Recent attempts at process intensification oftheir production, have disclosed the need for a better understanding of QAS thermal stability.
Wim, Baan, John, van der Schaaf, Wyatt, Winkenwerder, Roel, Kleijwegt   +3 more
core   +1 more source

Selective decomposition of cyclohexyl hydroperoxide by copper ion-containing quaternary ammonium salts in alkali-free medium

, 2013
A novel catalytic system composed of quaternary ammonium salts and copper (II) chloride was prepared. The catalyst showed high conversion and selectivity in the decomposition of cyclohexyl hydroperoxide to cyclohexanol and cyclohexanone (K/A oil) at room
Sun, Zhiqiang, Xu, Jie, Zheng, Xi, Liu, Junxia, Wang, Min, Ma, Jiping, 徐杰   +6 more
core   +1 more source

(Substituted-quinoline-1-yl) Methylbenzylammonium Chloride: Quaternization Reaction Process, Corrosion Inhibition Behavior, and Calculation Process

Molecules
In this paper, three quinoline-based quaternary ammonium salts were successfully synthesized, with quinoline, 8-hydroxyquinoline, and 8-methoxyquinoline used as raw materials, and benzyl chloride as a quaternization reagent. The as-synthesized quaternary
Jianing Tian, Roman Zinatullin, Jianhua Qian, Yanping Li, Xueming Kang, Junhua Li, Yanan Wang, He Huang, Jinjuan Xing   +8 more
doaj   +1 more source

Microwave radiation in synthesis of quaternary ammonium salts

, 2020
U ovom radu opisane su prednosti mikrovalnog zračenja prilikom sinteze amonijevih kvaternih soli. Tehnika mikrovalnog zračenja pruža jednostavnost procesa, bolje iskorištenje, smanjeno reakcijsko vrijeme, ekološku i ekonomsku prihvatljivost. Uspoređeni
Dadić, Blanka
core   +2 more sources

Kinetics of Quaternary Ammonium Salts Synthesis

Proceedings 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

Estudo da emissão por fluorescência de ultravioleta na quantificação de um inibidor de corrosão do tipo sal de amônio quaternário em água

Química Nova, 2012
Quaternary ammonium salts are the corrosion inhibitors most frequently used by the oil industry. In this study, the ultraviolet fluorescence technique was evaluated for the analysis of a quaternary ammonium salt in water as a corrosion inhibitor.
Herllaine de Almeida Rangel, Fábio Merçon   +1 more
doaj   +1 more source

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

Molecules, 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, Anna Ibáñez, Immaculada Dinarès, Ermitas Alcalde   +3 more
doaj   +1 more source