A5017635325- Crystallization and Solubility Studies
- X-ray Diffraction in Crystallography
- Ionic liquids properties and applications
- Synthesis and Biological Evaluation
- Synthesis and Reactions of Organic Compounds
- Multicomponent Synthesis of Heterocycles
- Crystallography and molecular interactions
- Fluorine in Organic Chemistry
- Synthesis and biological activity
- Surfactants and Colloidal Systems
- Microwave-Assisted Synthesis and Applications
- Click Chemistry and Applications
- Synthesis and Characterization of Heterocyclic Compounds
- Synthesis and Reactivity of Heterocycles
- Chemical Synthesis and Reactions
- Synthesis of heterocyclic compounds
- Thermal and Kinetic Analysis
- Electrochemical Analysis and Applications
- Inorganic and Organometallic Chemistry
- Synthesis and Characterization of Pyrroles
- Oxidative Organic Chemistry Reactions
- Chemistry and Chemical Engineering
- Essential Oils and Antimicrobial Activity
- Quinazolinone synthesis and applications
- Chemical Thermodynamics and Molecular Structure
Universidade Federal de Santa Maria
2016-2025
Universidade do Oeste de Santa Catarina
2016
Cambridge Crystallographic Data Centre
2010
Universidade Franciscana
2010
Dicationic imidazolium-based ILs: a potent strategy for applications requiring non-toxic materials with antimicrobial activity.
Coated TiO2 nanoparticles by dicationic imidazolium-based ionic liquids (ILs) were prepared and studied differential scanning calorimetry (DSC), dynamic light scattering (DLS), transmission electron microscopy (TEM), powder X-ray diffraction (XRD), (SEM). Three ILs with different hydrophobicity degrees structural characteristics used (IL-1, IL-2, IL-3). The interaction between IL molecules the surface was analyzed in both solid state solution. physical chemical properties of coated (TiO2 +...
The dethreading of a series succinamide-based [2]rotaxanes bearing benzylic amide macrocycles is reported herein. These transformations proceeded quantitatively either under flash vacuum pyrolysis, conventional heating, or microwave irradiation. Studying the size complementarity stoppers at ends thread and cavity macrocycle allowed us to set up best substituents for implementing extrusion from interlocked precursors. A variety 1H NMR kinetic experiments were carried out in order evaluate...
Six new ionic-liquid-based active pharmaceutical ingredients (IL-APIs) were prepared and their molecular structures characterized.
This work presents the synthesis of mono- and dicationic ionic liquids (ILs) that combine cations 1-butyl-3-methylimidazolium ([C4MIM]+), 1-decyl-3-methylimidazolium ([C10MIM]+), 1,4-bis(3-methylimidazolium-1-yl)butane ([C4(MIM)2]2+), 1,10-bis(3-methylimidazolium-1-yl)decane ([C10(MIM)2]2+) with anion dodecanoate ([C11COO]−), along a study into their thermal stability mechanism for decomposition. Thermal was investigated using Kissinger–Akahira–Sunose (KAS) isoconversional method to...
Phenolic compounds such as ferulic acid (FA) and caffeic (CA) are renowned for their antioxidant anti-inflammatory properties. However, physicochemical instability limits broader therapeutic applications. This study aimed to develop an analytical methodology the simultaneous quantification of these in nanoparticles using liquid chromatography. The suspensions exhibited favorable characteristics, including a particle size 117 nm, encapsulation efficiency above 60%, zeta potential 14 mV,...
The efficient synthesis of 1,2-dihydropyridine from the intramolecular cyclization reaction N-propargylic β-enaminones [R2C(O)CHC(R1)(N(R)CH2CCH), where R = Pr, Bn, Ph, 4-Me-C6H4, R1 Me, Et, R2 CF3, CO2Et] using AgNO3 as a catalyst (12 h at 25 °C) is reported. products were obtained good yields (70–90%). In particular, when β-enaminone with Me was performed over 24 period, resulted in formation pyrrole 80% yield.
In this work, an approach is proposed for understanding the crystal arrangements of organic compounds.
This work investigated the chemical and mechanical factors that affect cyclocondensation reactions in a ball mill. Chemical characteristics such as use or non-use of catalyst, amount catalyst reactants, product formation, well yield rotation frequency number, diameter, material milling balls were evaluated. It was found 450 rpm is efficient for energy transfer to reactants because conversion higher at this rotation. The reaction highly dependent on time (3 min) p-TSA (p-toluenesulfonic acid)...
Normalized parameters are presented to assist the interpretation of crystal mechanisms a series triazene<italic>N</italic>1-oxides. The role halogen⋯π interactions is discussed.
Deep eutectic solvents (DES) have been used to modulate the catalytic activity of TiO<sub>2</sub> nanoparticles.
Background and Purpose Fibromyalgia is a complex clinical disorder with an unknown aetiology, characterized by generalized pain co‐morbid symptoms such as anxiety depression. An imbalance of oxidants antioxidants proposed to play pivotal role in the pathogenesis fibromyalgia symptoms. However, precise mechanisms which oxidative stress contributes fibromyalgia‐induced remain unclear. The transient receptor potential ankyrin 1 (TRPA1) channel, known both sensor sensor, has been implicated...
Dicationic imidazolium-based ionic liquids (ILs) having bis(trifluoromethylsulfonyl)imide (NTf2) and amino acid–based (methionine phenylalanine) anionic moieties were synthesized used to coat titanium surfaces using a dip-coating technique. with varying alkyl chains (8 10 carbons) anions distinct characteristics selected understand the influence of IL structural features on deposition profile. X-ray photoelectron spectroscopy (XPS) atomic force microscopy (AFM) in this study help elucidate...