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87 articles for “amine”
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Elucidation of Synthetic Mechanism Involved in the Conversion of Zwitterionic Clonixin to Carboxamide Side-Product
Abstract: N-(3-Chloro-2-methylphenyl)-2-oxo-1,2-dihydropyridine-3-carboxamide is obtained as a by-product during the synthesis and crystallization of Clonixin (2-(3-chloro-2-methylanilino)nicotinic acid) and its polymorphs, respectively. This conversion was unexpected and it changed the usual investigation path way enabling the formation of neutral and zwitterionic polymorphs in our study on Clonixin in contrary to studies of 2-(p-tolylamino) nicotinic acid investigation. The same conversion is checked in the other synthesized analogs such as 2-(phenylamino)nicotinic acid (PNA), 2-(methyl(phenyl)amino)nicotinic acid …
Published in International Journal of Chemical Synthesis and Chemical Reactions · Vol. 2, Issue 1, 2016 Read article
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Review Paper on Mannich Bases for Heterocyclic Compound Synthesis
Abstract: Mannich bases are the Lewis bases which are β-amino carbonyl compounds synthesized as the endproducts of well known condensation reaction known as Mannich reaction. These are theaminoalkylation reactions involving the formation of carbon-carbon, carbon-Nitrogen, carbonsulphurbonds. Mannich bases of 2-furylmethylketone, catechol, 4-chlorophenol, derivative ofberberine, lawsone, anisaldehyde, benzaldehyde show diversity of biological activities. Mannichreaction is a carbon-carbon bond forming nucleophilic addition reaction and is a key step in synthesisof a widespread variety …
Published in International Journal of Chemical Synthesis and Chemical Reactions · Vol. 7, Issue 1, 2021 · pp. 39–50 Read article
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Isolation and Stability Studies of Dried Protein Fractions from Three Leguminous Seeds: Glycine max, Vignaunguiculata and Parkiabiglobasa
Abstract: Soya bean (Glycine max), Cowpea (Vignaunguiculata) and Locust bean (Parkiabiglobosa), three of Nigeria’s widely eating foods were exploited for their protein content. Dried protein isolates using aqueous NaOH were obtained, dried and subjected to DPPH stabilty antioxidant analysis at different pH. The % crude protein, by proximate analysis was high, which indicates that all the seeds can support the isolation of dried protein powder needed for the experiment. Soya seed …
Published in International Journal of Agrochemistry · Vol. 5, Issue 1, 2019 · pp. 28–40 Read article
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Preparation and Characterization of Ce-Si-SBA-15 Modified With Iron
Abstract: Recently environmental concerns have driven the development of specialized catalysts to prevent polluting substances from being released into the environment. New technologies have improvised our understanding of catalytic functions as well as selectivity in order to save the energy and chemicals. Today, catalysis is the workhorse in the chemical industry with approximately >90% of the products produced in catalytic processes. In addition, life cannot exist without catalysis, as virtually all …
Published in International Journal of Chemical Synthesis and Chemical Reactions · Vol. 2, Issue 1, 2016 Read article
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REVIEW ON PREPARATION & APPLICATIONS OF THIADIAZOLE DERIVATIVES
Abstract: This review has touched on thiadiazole derivatives as it is a basis for the synthesis of many drugs, industrial compounds, chemical dyes, pharmaceuticals and life substances, and as a link to many cyclic reactions and is produced in vitro methods for the hydrolysis of the amine-thiol compounds such as thiosemicarbazide and hydrazo-thion, among others. On the different methods of preparation for thiadiazole derivatives, its reactions and its various biological applications., …
Published in International Journal of Chemical Synthesis and Chemical Reactions · Vol. 6, Issue 1, 2020 · pp. 19–30 Read article
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Manufacturing of BWP-Grade Plywood from Resin Adhesive Using Animal Protein (Glue) by Partial Replacement of Phenol
Abstract: Abstract This paper presents the development of plyboard using phenol–glue–formaldehyde (PGF) resin and their basic mechanical properties. Phenoplast and aminoplast-based resins is the important adhesive for the manufacturing of boiling water proof (BWP) grade, shuttering and moisture resistance plywood. Environmental concerns and higher cost of petroleum-based resins have resulted in the development of technologies to replace phenol partially by biomaterials for the manufacturing of resin adhesive. Natural bio-based materials such …
Published in International Journal of Polymer Science and Engineering · Vol. 1, Issue 1-2, 2015 Read article
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Chemistry of Mehandi (Henna): Natural Dyeing Mechanism, Composition, and Applications
Abstract: Mehandi (Henna), derived from the plant Lawsonia inermis, is one of the oldest natural dyes used for body art, hair coloring, and traditional medicinal applications. Beyond its cultural significance, henna represents an interesting example of applied organic chemistry, where naturally occurring molecules interact with biological tissues to produce long-lasting coloration. The primary coloring constituent of henna is Lawsone (2-hydroxy-1,4-naphthoquinone), a naphthoquinone compound responsible for the characteristic reddish-brown stain. When henna …
Published in International Journal of Analytical and Applied Chemistry · Vol. 12, Issue 2, 2026 · pp. 39–45 Read article
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Synthesis, Structural Elucidation, and Antimicrobial Screening of a Cobalt (II) Coordination Compound Derived from a Thiophene-Containing Schiff Base
Abstract: Abstract An N, O-chelating azomethine Schiff base ligand (HL), chemically identified as 2-{[(thiophen-2-yl) methylidene] amino} benzoic acid, was synthesized by an equimolar condensation reaction between thiophene-2-carbaldehyde and anthranilic acid in absolute ethanol in the presence of a catalytic amount of acetic acid. The corresponding cobalt (II) complex, formulated as [Co(L)₂] · 2H₂O, was prepared by refluxing two equivalents of the ligand with one equivalent of cobalt (II) acetate tetrahydrate in …
Published in International Journal of Analytical and Applied Chemistry · Vol. 12, Issue 2, 2026 · pp. 1–7 Read article
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Synthesis, Spectral Study, SEM Analysis and Antibacterial Study of New Indole Azo Ligand and Complexes
Abstract: Azo ligands have developed significantly in recent decades due to their fundamental role in the coordination chemistry of transition elements. Their rapid response to coordination bonding in ligand and complex chemistry, particularly with divalent ions, is a key factor. The azo-bridged bond has played a well-established role in the formation of cobalt, nickel, and copper complexes. In this study, we prepared a novel ligand, an indole derivative bonded to an …
Published in International Journal of Chemical Synthesis and Chemical Reactions · Vol. 12, Issue 1, 2026 · pp. 1–10 Read article
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Study of the Effect of SLS Loading on the One-Pot Synthesis of Substituted Piperidines
Abstract: Piperidine derivatives represent a vital class of nitrogen-containing heterocycles with extensive pharmacological and industrial significance. Their synthesis has garnered considerable interest due to their presence in numerous bioactive molecules, including drugs with CNS activity, analgesic properties, and antimicrobial effects. Traditional multi-step synthetic pathways are often time-consuming and resource-intensive. To address this, one-pot multicomponent reactions (MCRs) have emerged as an efficient and eco-friendly alternative, allowing for the rapid construction of complex …
Published in International Journal of Green Chemistry · Vol. 12, Issue 1, 2026 · pp. 1–9 Read article
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Slow-Release Nutrients in Ruminant Nutrition:Optimizing Efficiency for Sustainable Livestock Production
Abstract: The use of slow-release nutrients in ruminant nutrition has emerged as a promising strategy to enhance efficiency and promote sustainability in livestock production systems. Unlike conventional nutrient sources that are rapidly degraded in the rumen, slow-release formulations provide a controlled, steady release of essential nutrients, such as nitrogen, amino acids, minerals, and vitamins. This steady supply supports optimal rumen microbial activity, improves nutrient utilization, and minimizes metabolic disturbances, leading to …
Published in International Journal of Animal Biotechnology and Applications · Vol. 11, Issue 2, 2025 · pp. 51–63 Read article
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Thermo-Acoustic Investigation of Molecular Interactions in Aqueous Solutions of L-Histidine at Different Temperatures
Abstract: The present study investigates the acoustic and thermodynamic behavior of aqueous solutions of L-Histidine across a concentration range of 0.01 m to 0.1 m and temperatures varying from 293.15 K to 318.15 K in 5 K intervals. Ultrasonic velocity (μ), density (ρ), and viscosity (η) measurements wereconducted with high precision to understand the solution behavior under different thermal conditions.Temperature constancy during measurements was ensured using a refrigerated circulatory bath withwater …
Published in International journal of Thermodynamics and Chemical Kinetics · Vol. 11, Issue 2, 2025 · pp. 9–17 Read article
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A method to determine kinetic triplet by coupled with model-free method and model-fitting method
Abstract: The present study is aimed to obtain integral linear method using rational expressions given by Senum and Yang, and a method of selecting the reaction model more quickly and easily and compute the activation energy and pre- exponential factor more accurately was proposed. An improved linear integral procedure coupled with one model-free method and one model-fitting method for the determination of kinetic triplet using non-isothermal data recorded at several heating …
Published in International journal of Thermodynamics and Chemical Kinetics · Vol. 11, Issue 1, 2025 · pp. 1–13 Read article
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One-Step Fabrication of Superomniphobic Pvdf-HFPSiO2Membrane for Long-Term CO2 Absorption inMembrane Gas Absorption System
Abstract: Membrane pore wetting is one of the major challenges for membrane gas absorption, especially when low surface tension liquid absorbents such as amine absorbents are utilized. To minimize diffusion resistance across the membrane, maintaining a non-wetted operating mode in membrane gas absorption is crucial. In this study, a superomniphobic polyvinylidene fluoride-cohexafluoropropylene membrane was fabricated by adding silica nanoparticles (SiO2) in an ethanol coagulation bath through non-solvent-induced phase separation. The surface …
Published in International Journal of Composite Materials and Matrices · Vol. 10, Issue 2, 2024 · pp. 35–44 Read article
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Eco-Friendly Synthesis of Nanoparticles: Advancing Green Methods Using Plant Extracts
Abstract: Nanotechnology, focusing on materials sized 1-100 nm, has garnered significant interest for its applications in agriculture, pharmaceuticals, and electronic devices. Nanomaterials, due to their unique properties, are pivotal in the development of advanced technologies such as drug delivery systems and nano-devices. Conventional nanoparticle synthesis methods, including sol-gel, chemical precipitation, microwave, and chemical vapor deposition, often involve hazardous chemicals, posing environmental risks. Therefore, there is a crucial demand for environmentally friendly …
Published in International journal of Nanobiotechnology · Vol. 10, Issue 1, 2024 Read article
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A Quasi-experimental Study to Evaluate the Effectiveness of Spirulina with Lemon Juice on Anemia among Under-five Children in Selected Schools at Madurai, Tamil Nadu
Abstract: Anemia among under-five children is an important concern for the health authorities in India. Untreated anemia in children can have a serious effect on their growth. Spirulina is blue-green algae. It contains protein, iron, vitamins, and minerals. It is aimed at a quasi-experimental study to evaluate the effectiveness of spirulina with lemon juice on anemia among under-five children in selected schools at Madurai, Tamilnadu. Quasi-experimental pre-test post-test control group design …
Published in International journal of Nursing Science Practice and Research · Vol. 8, Issue 2, 2022 · pp. 50–61 Read article
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Effect of Different Types of Cytokines on Bryophyllum pinnatum Micropropagation and Evaluating the Antimicrobial Activity of In-Vivo and In-Vitro Methonolic Leaf Extract
Abstract: Medicinal plants have played an important role in primary health care system among local people in India. The present paper is a study of the traditional knowledge of Bryophyllum pinnatum, its antimicrobial activity and micropropagation. In our experiment methanolic extracts of B. pinnatum leafs were examined for antimicrobial activity against a number of bacteria and different types of cytokinins (growth hormone) e.g.thidiazuron(TDZ), diphnyleurea(DPU), and benzyl amino purine (BAP) were also …
Published in International Journal of Plant Biotechnology · Vol. 3, Issue 2, 2017 · pp. 10–19 Read article
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Role of Bioactive Compounds on Protein Utilization in Ruminants: A Review
Abstract: Insufficient nutrition is the primary drive of low productivity by ruminants. These insufficiencies can be corrected by supplementation with high-density feeds and locally available tree legumes. These tree legumes contain various types of bioactive compounds, which can be defined as secondary plant metabolites (PSM) that are extra nutritional substances having pharmacological or toxicological effects in man and animals. Besides the primary biosynthetic, the secondary metabolites are also produced within the …
Published in International Journal of Animal Biotechnology and Applications · Vol. 4, Issue 1, 2018 · pp. 21–26 Read article
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High-Performance Thin-Layer Chirography Detection of Ethambutol
Abstract: Ethambutol belongs to the class of organic compounds known as 1, 2 amino alcohols. Being a medication, it is primarily used to treat tuberculosis. Its route of administration is oral. It is readily absorbed by gastrointestinal tract and 50% excreted unchanged by urine. Capacity of protein binding is 20–30%. It is antitubercular agent i.e. inhibiting the synthesis of spermidine in myobacteria also inhibits the transfer of mycolic acids into cell …
Published in International Journal of Industrial Biotechnology and Biomaterials · Vol. 4, Issue 1, 2018 · pp. 31–33 Read article
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Zirconium tetrachloride catalyzed one-pot highly efficient green synthesis of functionalized piperidines under visible light
Abstract: AbstractHighly efficient multicomponent one-pot green synthesis of a series of pharmaceutically interesting functionalized piperidine derivatives has been developed based on a low-cost and eco-friendly zirconium tetrachloride catalyst via tandem reactions of 1,3-dicarbonyl compounds, aromatic aldehydes, and various amines in ethanol under visible light. High atom-economy, high yields, less reaction times, eco-friendly, and mild reaction conditions are some of the important features of this protocol.Key words: ZrCl4, piperidines, multi-component reactions, visible …
Published in International Journal of Green Chemistry · Vol. 6, Issue 1, 2020 · pp. 36–43 Read article