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Design, Synthesis and Structural Confirmation of a Series of 2-(Thiophen-2-yl)-4H-chromen-3-yl-sulfonate Derivatives and Preliminary Investigation of Their Antioxidant and Anticancer Potentials

期刊: JOURNAL OF THE BRAZILIAN CHEMICAL SOCIETY, 2021; 32 (9)

A series of novel 2-(thiophen-2-yl)-4H-chromen-3-yl sulfonate derivatives (4a-4n) were synthesized and investigated for their in vitro free radical sc......

Simultaneous LC-MS/MS Determination of Sacubitril, Valsartan and LBQ657 in Human Plasma and Its Application to Clinical Study

期刊: JOURNAL OF THE BRAZILIAN CHEMICAL SOCIETY, 2021; 32 (9)

A rapid and reproducible liquid chromatography-tandem mass spectrometry (LC-MS/MS) method was developed and validated to simultaneously determine sacu......

Preparation of SAPO-34-Based Catalyst for Conversion of Fructose to 5-Hydroxymethylfurfural

期刊: JOURNAL OF THE BRAZILIAN CHEMICAL SOCIETY, 2021; 32 (8)

Solid acid-catalyzed dehydration of fructose to produce 5-hydroxymethylfurfural (5-HMF) has been a hotspot in biomass conversion research in recent ye......

Liquid Phase Nitration of Benzene Catalyzed by a Novel Salt of Molybdovanadophosphoric Heteropolyacid

期刊: JOURNAL OF THE BRAZILIAN CHEMICAL SOCIETY, 2021; 32 (6)

A highly efficient and reusable catalyst QA-HPMV was successfully prepared by the reaction of quinoline-2-formic acid (QA) with molybdovanadophosphori......

Different Degradation Patterns of Chiral Contaminant Enantiomers: Paclobutrazol as a Case Study

期刊: JOURNAL OF THE BRAZILIAN CHEMICAL SOCIETY, 2021; 32 (6)

Studies often neglect the different trends between enantiomers in soil chiral contaminants. In the present study, paclobutrazol was chosen as the targ......

Single-Layered Paper-Based Microflluidic Devices Made by Paint-Spraying Technique with Great Barrier Resistance for Colorimetric Assays

期刊: JOURNAL OF THE BRAZILIAN CHEMICAL SOCIETY, 2021; 32 (3)

The single-layered paint-spraying paper based microfluidic devices (sp-mu PADs) have been for the first time integrated with the colorimetric assay. T......

An Efficient and Recyclable Sn-Based Phosphotungstic Acid with Tunable Bronsted/Lewis Acidity for Selective Oxidation of Benzyl Alcohol

期刊: JOURNAL OF THE BRAZILIAN CHEMICAL SOCIETY, 2021; 32 (1)

A series of metal ion (M = Sn2+, Fe3+, Ni2+, Co2+, Ag+, Cu2+) exchanged tungstophosphoric acid (H3PW12O40; TPA) catalysts with tunable BrOnsted/Lewis ......

A New Energetic Complex: Synthesis, Structure, and Combustion Catalysis Performance

期刊: JOURNAL OF THE BRAZILIAN CHEMICAL SOCIETY, 2020; 31 (8)

The potential of tetrazole-based ligands for forming energetic complexes applied in pyrotechnics and propellants is demonstrated with the use of 5,5'-......

Catalytic Dehydration of Glycerol to Acrolein over Aluminum Phosphate Catalysts

期刊: JOURNAL OF THE BRAZILIAN CHEMICAL SOCIETY, 2020; 31 (8)

Gas phase conversion of glycerol to acrolein over a variety of aluminum phosphate (AlP) catalysts synthesized by a simple replacement reaction method ......

A Highly Selective Fluorescent Chemosensor for Al3+ Based on 2,2 ':6 ',2 ''-Terpyridine with a Salicylal Schiff Base

期刊: JOURNAL OF THE BRAZILIAN CHEMICAL SOCIETY, 2020; 31 (9)

Two 2.2':6',2 ''-terpyridine-based Schiff bases (TPySSB and TPySB) have been synthesized. The TPySSB shows remarkable selective 'off-on' fluorescence ......

Pueraria lobata Root Constituents as Xanthine Oxidase Inhibitors and Protective Agents against Oxidative Stress Induced in GES-1 Cells

期刊: JOURNAL OF THE BRAZILIAN CHEMICAL SOCIETY, 2020; 31 (10)

Ultrafiltration coupled with liquid chromatography-mass spectrometry (LC-MS) was established to screen xanthine oxidase (XO) inhibitors from Pueraria ......

The Comparative Investigation of Corrosion and Passivation for X65 Carbon Steel in pH 1 to 5 HNO3 Solutions without and with 0.01 mol L-1 NaNO2

期刊: JOURNAL OF THE BRAZILIAN CHEMICAL SOCIETY, 2020; 31 (4)

The influence of 0.01 mol L-1 NaNO(2 )addition on the corrosion and passivation of X65 carbon steel in pH 1 to 5 HNO3 solutions was investigated and c......

An Electrochemiluminescence Biosensor for the Determination of Mercury Ion via Dual-Amplifiication Strategy

期刊: JOURNAL OF THE BRAZILIAN CHEMICAL SOCIETY, 2020; 31 (12)

A novel dual-signal amplificatory electrochemiluminescence (ECL) deoxyribonucleic acid (DNA) biosensor was designed for the determination of Hg2+. One......

Specific Disulfide Bond Formation Directed by Peptide Nucleic Acids

期刊: JOURNAL OF THE BRAZILIAN CHEMICAL SOCIETY, 2020; 31 (5)

In this study, we successfully demonstrated a strategy for specific disulfide bond formation by hybridization of two complementary peptide nucleic aci......

Rapid Determination of Vitamins D-2 and D-3 in Dairy Products by High-Performance Liquid Chromatography after Solid Phase Extraction Based on Polystyrene/Polypyrrole Composite Nanofibers

期刊: JOURNAL OF THE BRAZILIAN CHEMICAL SOCIETY, 2020; 31 (6)

The detection of vitamin D in complex samples is challenging because of the instability of vitamin D in sample preparation. To resolve this problem. p......

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