Results 21 to 30 of about 61,390 (300)

Study of Ground State Interactions of Enantiopure Chiral Quaternary Ammonium Salts and Amides, Nitroalkanes, Nitroalkenes, Esters, Heterocycles, Ketones and Fluoroamides. [PDF]

Chemistry, 2021
Chiral phase‐transfer catalysis provides high level of enantiocontrol, however no experimental data showed the interaction of catalysts and substrates. 1H NMR titration was carried out on Cinchona and Maruoka ammonium bromides vs.
Bencivenni G, Salazar Illera D, Moccia M, Houk KN, Izzo JA, Novacek J, Grieco P, Vetticatt MJ, Waser M, Adamo MFA.   +9 more
europepmc   +2 more sources

Modern chemical disinfectants and antiseptics. Part II

Журнал органічної та фармацевтичної хімії, 2021
Aim. To generalize and systematize information on the properties of modern chemical disinfectants and antiseptic agents (DA and AA) – peroxide compounds, surfactants, salts of heavy metals and metals of variable valence in the highest oxidation state ...
Vasyl M. Britsun, Nataliya V. Simurova, Inna V. Popova, Oleksii V. Simurov   +3 more
doaj   +1 more source

Unprecedented and Readily Tunable Photoluminescence from Aliphatic Quaternary Ammonium Salts.

Angewandte Chemie, 2021
Compounds bearing aliphatic amines can be emissive under appropriate conditions. However, their ionized counterparts, namely, quaternary ammonium salts (QASs), which are widely used as phase-transfer catalysts, ionic liquids, disinfectants, and ...
Saixing Tang, Zihao Zhao, Tianjiao Yang, Yunzhong Wang, Xiaohong Chen, W. Yuan   +5 more
semanticscholar   +1 more source

Recent advances in the application of quaternary ammonium compounds in biomedical materials

口腔疾病防治, 2019
Microbial infections affect people worldwide. Quaternary ammonium salts serve antibacterial, antifungal,antiviral, anti⁃matrix metalloproteinase and polymerization functions. While the modification of biomaterials with quater⁃ nary ammonium salts cannot
JIAO Yang, CHEN Jihua
doaj   +1 more source

Synthesis, Analysis, Cholinesterase-Inhibiting Activity and Molecular Modelling Studies of 3-(Dialkylamino)-2-hydroxypropyl 4-[(Alkoxy-carbonyl)amino]benzoates and Their Quaternary Ammonium Salts

Molecules, 2017
Tertiary amines 3-(dialkylamino)-2-hydroxypropyl 4-[(alkoxycarbonyl)amino]benzoates and their quaternary ammonium salts were synthesized. The final step of synthesis of quaternary ammonium salts was carried out by microwave-assisted synthesis.
Tereza Padrtova, Pavlina Marvanova, Klara Odehnalova, Renata Kubinova, Oscar Parravicini, Adriana Garro, Ricardo D. Enriz, Otakar Humpa, Michal Oravec, Petr Mokry   +9 more
doaj   +1 more source

An outstanding antichlorine and antibacterial membrane with quaternary ammonium salts of alkenes via in situ polymerization for textile wastewater treatment

, 2020
Developing an efficient and stable separation membrane material for textile water treatment is of considerable significance but challenging due to the limitation of chlorination degradation and bacterial fouling.
Chao Liu, Yongqiang Guo, Xinjing Wei, Chao Wang, Muchao Qu, D. Schubert, Chunhua Zhang   +6 more
semanticscholar   +1 more source

Biocompatible hydrogels based on quaternary ammonium salts of chitosan with high antimicrobial activity as biocidal agents for disinfection.

Carbohydrate Polymers
The paper reports new hydrogels based on quaternary ammonium salts of chitosan designed as biocidal products. The chitosan derivative was crosslinked with salicylaldehyde via reversible imine bonds and supramolecular self-assemble to give dynamic ...
Bianca-Iustina Andreica, L. Mititelu-Tarțău, I. Roșca, I. Pelin, Erwan Nicol, L. Marin   +5 more
semanticscholar   +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

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

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