Hai Truong Nguyen
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View article: Recent advances in metal-free catalysts for the synthesis of N-heterocyclic frameworks focusing on 5- and 6-membered rings: a review
Recent advances in metal-free catalysts for the synthesis of N-heterocyclic frameworks focusing on 5- and 6-membered rings: a review Open
The tremendous potential of transition metal-free multi-component reactions (MCR) in the synthesis of N-heterocyclic frameworks is examined in this review, offering a complete overview of this subject matter.
View article: Application of magnetic materials bearing Brønsted acid sites – based on the modification of amorphous carbon with ionic liquids as catalysts for synthesis of dihydropyrimidinone derivatives <i>via</i> the Biginelli reaction
Application of magnetic materials bearing Brønsted acid sites – based on the modification of amorphous carbon with ionic liquids as catalysts for synthesis of dihydropyrimidinone derivatives <i>via</i> the Biginelli reaction Open
Biomass is a widely available and renewable natural resource derived from plant and animal materials.
View article: Composite materials containing Brønsted acid sites derived from <i>Syzygium nervosum</i> leaves <i>via</i> graphene oxide modification as green catalysts for the synthesis of 4-thiazolidinones
Composite materials containing Brønsted acid sites derived from <i>Syzygium nervosum</i> leaves <i>via</i> graphene oxide modification as green catalysts for the synthesis of 4-thiazolidinones Open
An IL@SGO catalyst was synthesized from Syzygium nervosum leaf residues via the modification of sulfur-doped graphene oxide with dual-acid ionic liquid and used for the synthesis of 4-thiazolidinones.
View article: Eco-friendly and recyclable ionic liquid–zinc chloride catalyst supported on graphene oxide from <i>Nypa fruticans</i> husk for green synthesis of 2-amino-3-cyanopyridine derivatives
Eco-friendly and recyclable ionic liquid–zinc chloride catalyst supported on graphene oxide from <i>Nypa fruticans</i> husk for green synthesis of 2-amino-3-cyanopyridine derivatives Open
This study successfully demonstrates the application of GO/IL/Zn x Cl y as a novel and environmentally friendly catalyst for the synthesis of 2-amino-3-cyanopyridine derivatives.
View article: Effects of dietary supplementation of shrimp head and shell by-products on growth performance and incidence of diarhea in fattening pigs from 96 to 164 days of age
Effects of dietary supplementation of shrimp head and shell by-products on growth performance and incidence of diarhea in fattening pigs from 96 to 164 days of age Open
The objective of this study was to evaluate effects of dietary supplementation of shrimp head and shell by-products on growth performance and incidence of diarhea in fattening pigs from August 2023 to October 2023 at the pig farm in Thoai …
View article: Vulnerabilities of People with Different Types of Disabilities in Disasters and Extreme Weather Events
Vulnerabilities of People with Different Types of Disabilities in Disasters and Extreme Weather Events Open
View article: A eutectogels-catalyzed one-pot multi-component reaction: access to pyridine and chromene derivatives
A eutectogels-catalyzed one-pot multi-component reaction: access to pyridine and chromene derivatives Open
The demand for a wide array of functional chemicals and materials has experienced a significant surge in tandem with the advancement of civilization.
View article: Deep eutectic solvent as a green catalyst for the one-pot multicomponent synthesis of 2-substituted benzothiazole derivatives
Deep eutectic solvent as a green catalyst for the one-pot multicomponent synthesis of 2-substituted benzothiazole derivatives Open
The need for diverse essential chemicals and resources has markedly risen alongside the advancement of civilization.
View article: Efficient conversion of carbohydrates into 5‐hydroxymethylfurfural using choline chloride-based deep eutectic solvents
Efficient conversion of carbohydrates into 5‐hydroxymethylfurfural using choline chloride-based deep eutectic solvents Open
View article: Efficient Conversion of Carbohydrates into 5‐Hydroxymethylfurfural Using Choline Chloride-Based Deep Eutectic Solvents
Efficient Conversion of Carbohydrates into 5‐Hydroxymethylfurfural Using Choline Chloride-Based Deep Eutectic Solvents Open
View article: A new and straightforward route to synthesize novel pyrazolo[3,4-<i>b</i>]pyridine-5-carboxylate scaffolds from 1,4-dihydropyrano[2,3-<i>c</i>]pyrazole-5-carbonitriles
A new and straightforward route to synthesize novel pyrazolo[3,4-<i>b</i>]pyridine-5-carboxylate scaffolds from 1,4-dihydropyrano[2,3-<i>c</i>]pyrazole-5-carbonitriles Open
A new pathway for the synthesis of pyrazolo[3,4- b ]pyridine-5-carboxylate scaffolds from 1,4-dihydropyrano[2,3- c ]pyrazole-5-carbonitriles and aniline has been developed using sulfonated amorphous carbon at room temperature.
View article: Synthesis of benzo[<i>a</i>]carbazole derivatives <i>via</i> intramolecular cyclization using Brønsted acidic carbonaceous material as the catalyst
Synthesis of benzo[<i>a</i>]carbazole derivatives <i>via</i> intramolecular cyclization using Brønsted acidic carbonaceous material as the catalyst Open
In this work, a new procedure for the synthesis of benzo[ a ]carbazole from 1,3-diketones, primary amines, phenylglyoxal monohydrate, and malononitrile employing a solid acidic catalyst has been developed.
View article: Preparation of polysubstituted imidazoles using AC-SO<sub>3</sub>H/[Urea]<sub>7</sub>[ZnCl<sub>2</sub>]<sub>2</sub>as an efficient catalyst system: a novel method, and α-glucosidase inhibitor activity
Preparation of polysubstituted imidazoles using AC-SO<sub>3</sub>H/[Urea]<sub>7</sub>[ZnCl<sub>2</sub>]<sub>2</sub>as an efficient catalyst system: a novel method, and α-glucosidase inhibitor activity Open
A new catalytic system has been developed for the synthesis of polysubstituted imidazoles through multicomponent reaction from nitrobenzenes, benzil, aldehydes, and ammonium acetate.
View article: Mechanism of Friedel–Crafts Acylation Using Metal Triflate in Deep Eutectic Solvents: An Experimental and Computational Study
Mechanism of Friedel–Crafts Acylation Using Metal Triflate in Deep Eutectic Solvents: An Experimental and Computational Study Open
In this paper, we develop a method for Friedel-Crafts acylation using metal triflate in deep eutectic solvents. Various metal triflates were tested and provided good to excellent yields of corresponding ketone products. The density functio…
View article: Rapid and Simple Microwave-Assisted Synthesis of Benzoxazoles Catalyzed by [CholineCl][Oxalic Acid]
Rapid and Simple Microwave-Assisted Synthesis of Benzoxazoles Catalyzed by [CholineCl][Oxalic Acid] Open
Microwave irradiation has been used to enhance the reaction yields and selectivities for organic transformation. In this paper, microwave irradiation (MW) was investigated for the environmentally benign synthesis of benzoxazoles through th…
View article: A New Pathway for the Preparation of Pyrano[2,3-<i>c</i>]pyrazoles and molecular Docking as Inhibitors of p38 MAP Kinase
A New Pathway for the Preparation of Pyrano[2,3-<i>c</i>]pyrazoles and molecular Docking as Inhibitors of p38 MAP Kinase Open
We report a new pathway to synthesize pyrano[2,3-c]pyrazoles and their binding mode to p38 MAP kinase. Pyrano[2,3-c]pyrazole derivatives have been prepared through a four-component reaction of benzyl alcohols, ethyl acetoacet…
View article: The Effects of Rhizobium Inoculation On The Growth Of Rice (Oryza Sativa L.) and White Radish (Raphanus Sativus L.)
The Effects of Rhizobium Inoculation On The Growth Of Rice (Oryza Sativa L.) and White Radish (Raphanus Sativus L.) Open
The utilization of chemical fertilizers in agriculture production could cause harmful effects on human health and the environment, therefore the development and application of biofertilizers produced from beneficial microorganisms like pla…
View article: Direct and Low-Cost Transformation of Glucose to 2,5-Diformylfuran by Alcl3.6h2o, Sulfur, and Dimethyl Sulfoxide
Direct and Low-Cost Transformation of Glucose to 2,5-Diformylfuran by Alcl3.6h2o, Sulfur, and Dimethyl Sulfoxide Open
View article: A green approach for the synthesis of 2-substituted benzoxazoles and benzothiazoles via coupling/cyclization reactions
A green approach for the synthesis of 2-substituted benzoxazoles and benzothiazoles via coupling/cyclization reactions Open
View article: Ultrashort-pulse lasers machining
Ultrashort-pulse lasers machining Open
A new type of material processing is enabled with ultrashort (t < 10 psec) laser pulses. Cutting, drilling, sculpting of all materials (biologic materials, ceramics, sapphire, silicon carbide, diamond, metals) occurs by new mechanisms w…
View article: Correction: One-pot three-component synthesis of 1-amidoalkyl naphthols and polyhydroquinolines using a deep eutectic solvent: a green method and mechanistic insight
Correction: One-pot three-component synthesis of 1-amidoalkyl naphthols and polyhydroquinolines using a deep eutectic solvent: a green method and mechanistic insight Open
Correction for ‘One-pot three-component synthesis of 1-amidoalkyl naphthols and polyhydroquinolines using a deep eutectic solvent: a green method and mechanistic insight’ by Vu Thanh Nguyen et al., New J. Chem., 2021, 45, 2053–2059, DOI: 1…
View article: Choline chloride-based deep eutectic solvents as effective electrolytes for dye-sensitized solar cells
Choline chloride-based deep eutectic solvents as effective electrolytes for dye-sensitized solar cells Open
Electrolytes for dye-sensitized solar cells remain a challenge for large-scale production and commercialization, hindering the wide application of solar cells.
View article: A Green Approach for the Synthesis of 2-Substituted Benzoxazoles and Benzothiazoles via Coupling/Cyclization Reactions
A Green Approach for the Synthesis of 2-Substituted Benzoxazoles and Benzothiazoles via Coupling/Cyclization Reactions Open
View article: Straightforward synthesis of benzoxazoles and benzothiazoles via photocatalytic radical cyclization of 2-substituted anilines with aldehydes
Straightforward synthesis of benzoxazoles and benzothiazoles via photocatalytic radical cyclization of 2-substituted anilines with aldehydes Open
Eosin Y-catalyzed one-pot coupling and cyclization of o-substituted anilines with aldehydes to form benzoxazoles and benzothiazoles under mild condition has been developed. The reaction scope was broadly tolerant of various 2-substituted a…
View article: Synthesis of polyhydroquinolines and propargylamines through one-pot multicomponent reactions using an acidic ionic liquid immobilized onto magnetic Fe<sub>3</sub>O<sub>4</sub> as an efficient heterogeneous catalyst under solvent-free sonication
Synthesis of polyhydroquinolines and propargylamines through one-pot multicomponent reactions using an acidic ionic liquid immobilized onto magnetic Fe<sub>3</sub>O<sub>4</sub> as an efficient heterogeneous catalyst under solvent-free sonication Open
A nano-sized Fe3O4-supported Lewis acid ionic liquid catalyst for the synthesis of polyhydroquinolines and propargylamines under ultrasound irradiation has been developed.
View article: Performance of Fish Farms in Vietnam–Does Financial Access Help Improve Their Cost Efficiency?
Performance of Fish Farms in Vietnam–Does Financial Access Help Improve Their Cost Efficiency? Open
For a common small- to medium-sized fish farm in an agricultural-based economy, monitoring costs is very important, since financial constraints are always a problem for these farmers. This will be thus easier if the farmers can get access …
View article: Ionic liquid supported on magnetic nanoparticles (-Fe2O3@SiO2-IL-ZnxCly) as the green catalyst for the Paal-Knorr reaction
Ionic liquid supported on magnetic nanoparticles (-Fe2O3@SiO2-IL-ZnxCly) as the green catalyst for the Paal-Knorr reaction Open
The ionic liquid supported on magnetic nanoparticles ( -Fe2O3@SiO2-IL-ZnxCly) was found to be an effective catalyst for the Paal–Knorr reaction. The condensation of aromatic amine and acetonylacetone under solvent-free sonication afforded …
View article: Multi-component reaction between aromatic aldehyde, ethyl acetoacetate and urea catalyzed by Brönsted ionic liquid under microwave irradiation
Multi-component reaction between aromatic aldehyde, ethyl acetoacetate and urea catalyzed by Brönsted ionic liquid under microwave irradiation Open
[(SO3H)4C4C1Im]HSO4 is a Brönsted ionic liquid, which was found to be an effective catalyst for organic synthesis. Ionic liquid was prepared from 1-methylimidazole and 1,4- butanesultone (ratio = 1:1), structure of [(SO3H)4C4C1Im]HSO4 was …
View article: Friedel-Crafts benzoylation reaction of aromatic compounds using zinc oxide nanoparticles in deep eutectic solvent (choline chloride/urea) under microwave irradiation
Friedel-Crafts benzoylation reaction of aromatic compounds using zinc oxide nanoparticles in deep eutectic solvent (choline chloride/urea) under microwave irradiation Open
Synthesis of zinc oxide nanoparticles (ZnO) which was found to be effective catalyst for Friedel-Crafts benzoylation reaction in the presence of deep eutectic solvent (DES). The method is one of the most important intermediates for prepari…
View article: The Role of Knowledge in Sustainable Agriculture: Evidence from Rice Farms’ Technical Efficiency in Hanoi, Vietnam
The Role of Knowledge in Sustainable Agriculture: Evidence from Rice Farms’ Technical Efficiency in Hanoi, Vietnam Open
This paper examines the production efficiency of 2079 rice farms in Hanoi (Vietnam) in 2018 and the role of formal and informal knowledge on their efficiency. Our empirical results showed that, in general, Hanoi’s rice farms performed quit…