Results 41 to 50 of about 44,905 (302)

A Remarkably Efficient Phase-Transfer Catalyzed Amination of α-Bromo-α, β-Unsaturated Ketones in Water

open access: yesHeteroatom Chemistry, 2021
Tandem conjugate addition–alkylation reaction of various amines with α-bromo-α, β-unsaturated ketones resulted in near-quantitative conversions into the corresponding aziridines when the reaction was carried out in the presence of 10 mol% of phase ...
Alemayehu Mekonnen, Alemu Tesfaye
doaj   +1 more source

Synthesis, physiochemical property and antimicrobial activity of novel quaternary ammonium salts. [PDF]

open access: yesJ Enzyme Inhib Med Chem, 2018
Xie X   +6 more
europepmc   +2 more sources

Antifungal activity of gemini quaternary ammonium salts

open access: yesMicrobiological Research, 2013
A series of gemini quaternary ammonium chlorides and bromides with various alkyl chain and spacer lengths was synthesized. The most active compounds against fungi were chlorides with 10 carbon atoms within the hydrophobic chain. Among these compounds were few with no hemolytic activity at minimal inhibitory concentrations.
Obłąk, Ewa   +3 more
openaire   +2 more sources

Process for purification of waste water produced by a Kraft process pulp and paper mill [PDF]

open access: yes, 1979
The water from paper and pulp wastes obtained from a mill using the Kraft process is purified by precipitating lignins and lignin derivatives from the waste stream with quaternary ammonium compounds, removing other impurities by activated carbon produced
Humphrey, M. F.
core   +1 more source

Modification of a Brazilian smectite clay with different quaternary ammonium salts [PDF]

open access: yes, 2010
In this work, a smectite clay from the State of Paraiba, Brazil, was treated with six different types of ammonium salts, which is an usual method to enhance the affinity between the clay and polymer for the preparation of nanocomposites.
DELBEM, Maria Flávia   +3 more
core   +2 more sources

Targeting TNBC: core–shell polycationic polyurea dendrimers with inherent anticancer activity

open access: yesFEBS Open Bio, EarlyView.
Core–shell polycationic PURE dendrimers were tested in TNBC‐derived tumor models. Both formulations selectively targeted TNBC and effectively reduced tumor volume. PUREG4‐OEI48 suppressed tumor growth without detectable toxicity, whereas PUREG4‐OCEI24, despite showing efficacy, induced hepatic toxicity.
Adriana Cruz   +9 more
wiley   +1 more source

Gold Nucleation Inhibition by Halide Ions: a Basis for a Seed-Mediated Approach [PDF]

open access: yes, 2015
In the present work, we examine the effect of halide ions on gold nucleation, a typical synthetic variable in the wet-chemical production of gold nanostructures.
Coronado, Eduardo A.   +4 more
core   +1 more source

Establishing an assay to evaluate d‐amino acid oxidase enzyme kinetics and inhibition using WST‐8 redox dye

open access: yesFEBS Open Bio, EarlyView.
This study investigated a novel WST‐8‐based assay for evaluating d‐Amino acid oxidase (DAO) inhibitors. We confirmed its effectiveness using known inhibitors and found that uremic toxins possess relatively weak inhibitory activity compared to existing drugs.
Kahoko Miyake   +4 more
wiley   +1 more source

Synthesis and anticorrosive activity of tert-amines containing cycloacetal or gem-dichlorocyclopropane fragments and quaternary ammonium salts on their basis

open access: yesТонкие химические технологии
Objectives. The work set out to synthesize tertiary amines comprising derivatives of morpholine and piperidine containing a 1,3-dioxolane or gem-dichlorocyclopropane fragment, as well as quaternary ammonium salts based on them.
Yu. G. Borisova   +4 more
doaj   +1 more source

Structure and mechanical properties of polyamide 6/Brazilian clay nanocomposites

open access: yesMaterials Research, 2009
Recent interest in polymer/organoclays nanocomposites systems is motivated by the possibility of achieving enhanced properties and added functionality at lower clay loading as compared to conventional micron size fillers.
Amanda Melissa Damião Leite   +5 more
doaj   +1 more source

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