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Antar Ahmed Abdelhamid

Assistant Professor - استاذ مساعد

Faculty of science

Address: Dr.

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انا الدكتور عنتر احمد عبد الحميد استاذ مساعد للكيميتء العضويه جامعه سوهاج لي اكثر من سبعون بحث منشور في مجلات لها معامل تاثير عالي كل المركبات المحضره تستخدم كمركبات كمواد علاجيه

Hydrothermal preparation and characterization of ZnFe2O4 magnetic nanoparticles as an efficient heterogeneous catalyst for the synthesis of multi‐substituted imidazoles and study of their anti‐inflammatory activity

2018-10-02 08:56:27 | Keywords multicomponent rea, efficient, ZnFe2O4 nanoparticles, non‐chromatographic method, biologically active, Multicomponent reaction, superparamagnetic materials, imidazoles, efficient catalyst ,
Hydrothermal preparation and characterization of ZnFe2O4 magnetic nanoparticles as an efficient heterogeneous catalyst for the synthesis of multi‐substituted imidazoles and study of their anti‐inflammatory activity
Nanoparticles are key focus of research for a wide range of novel applications. As such, ZnFe2O4 magnetic nanoparticles were synthesized hydrothermally and charac-terized via scanning and transmission electron microscopies, powder X‐ray diffrac-tion, energy‐dispersive X‐ray and infrared spectroscopies, thermogravimetric analysis and magnetic measurements. They were used as a robust catalyst for the synthesis of a series of biologically active multi‐substituted imidazoles ... Read more

New Method for Synthesis of Multi-substituted Imidazoles

2018-10-03 08:46:32 | Keywords Multi-substituted Imidazoles, one-pot Multicomponent synthes, Synthesis, alkylation,
New Method for Synthesis of Multi-substituted Imidazoles
Here, we reported two methods for the synthesis of multi-substituted imidazoles,firstly via four-component cyclocondensation reaction of benzil, aliphatic amines (allylamine or pentylamine), and aromatic aldehyde and ammonium acetate. Using an ionic liquid catalyst namely, diethyl ammonium hydrogen sul-fate, and under solvent-free conditions. Secondly, via the alkylation of synthesized NH imidazoles with alkyl halide (allyl bromide and pentyl bromide) gave8a–cin high ... Read more

Crystal structure of 1-[2-(4-nitrophenyl)-4,5-diphenyl-1H-imidazol-1-yl]propan-2-ol

2018-10-06 08:07:24 | Keywords C—Hinter-actions, Multi-substituted Imidazoles, crystal structure, hydrogen bonding.,
Crystal structure of 1-[2-(4-nitrophenyl)-4,5-diphenyl-1H-imidazol-1-yl]propan-2-ol
The title compound, C24H21N3O3, crystallizes with two unique but closely r.m.s. overlay fit = 0.215 A˚) comparable molecules (1 and 2) in the asymmetric unit of the triclinic unit cell. In molecule 1, the dihedral angles between the central imidazlole ring and the benzene-ring substituents are 42.51 (9), 45.41 (9) and 56.92 (8), respectively. Comparable data for molecule 2 are ... Read more

An Efficient One-Pot Three-Component Synthesis of Some New Polyhydroquinolines via Enaminone Intermediates

2018-10-03 08:52:12 | Keywords One-Pot Three-Component, New Polyhydroquinolines, Enaminone Intermediates,
An Efficient One-Pot Three-Component Synthesis of Some New Polyhydroquinolines via Enaminone Intermediates
For a wide spectrum of pharmacological effects of polyhydroquinolines, this study introduces a developed safe, simple, higher yields and fast method for the synthesis of some new hexahydroquinoline derivatives using one-pot three-component cyclocondensation reaction, via the reaction of 1,3-cyclohexanedione with primary amine and arylidinemalononitrile or salicylaldehyde derivatives. The prepared compounds were reacted with different reagents asN,N-dimethylformamide dimethylacetal, acetic anhydride, sulphuric ... Read more

Novel Quaternary Ammonium-Based Cationic Surfactants: Synthesis, Surface Activity and Evaluation as Corrosion Inhibitors for C1018 Carbon Steel in Acidic Chloride Solution

2018-10-03 08:55:52 | Keywords Cationic surfactants, Cyclohexene, EDX, Carbon steel, Corrosion inhibition, EIS, SEM,
Novel Quaternary Ammonium-Based Cationic Surfactants: Synthesis, Surface Activity and Evaluation as Corrosion Inhibitors for C1018 Carbon Steel in Acidic Chloride Solution
A novel class of quaternary ammonium-based cationic surfactants is synthesized and characterized via spectroscopic methods (FTIR, 1 HNMR and13 C NMR). The surface properties, foaming power and biodegrad-ability of the synthesized cationic surfactants are deter-mined using the surface tension technique. The protection performance with their adsorption mecha-nisms for carbon steel is evaluated in a 15% HCl solu-tion by a series ... Read more

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