abdelraheem_mohamed

عبدالرحيم محمد احمد محمود

مدرس -

كلية العلوم

العنوان: جامعة سوهاج - كلية العلوم - قسم الكيمياء

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للدكتور/ عبدالرحيم محمد احمد محمود

مدرس الكيمياء العضوية بقسم الكيمياء

كلية العلوم - جامعة سوهاج


2018-09-20 12:53:07
محاضرة الكيمياء العضوية الصناعية - 3 تربية - شعبة كيمياء
محاضرة الكيمياء العضوية الصناعية لطلاب الفرقة الثالثة بكلية التربية شعبة الكيمياء يوم الخميس من الساعة الواحدة ظهرا حتى الثانية - فصل 307 إقراء المزيد

2018-09-20 12:48:25
محاضرة الكيمياء العضوية الصناعية - 4 علوم
محاضرة الكيمياء العضوية الصناعية والاصباغ والنسيج لطلاب الفرقة الرابعة بكلية العلوم شعب (كيمياء وميكروبيولوجى -كيمياء وعلم الحيوان -كيمياء ونبات-كيمياء وفيزياء-كيمياء وجيولوجيا ) يوم الثلاثاء من الساعة الثامنة حتى الساعة العاشرة بمدرج ج إقراء المزيد

2018-09-20 12:40:03
For students
Dear students Please follow up my webpage during the semester time for the new course updates, quizzes and tasks إقراء المزيد

2018-09-18 22:04:33 | الكلمات المفتاحية phase transfer catalysis,
Synthesis of Novel Fused Heterocycles Based on 6-Amino-4-phenyl-2-thioxo-1,2-dihydropyridine-3,5-dicarbonitrile
Under phase transfer catalysis conditions, 6‐amino‐4‐phenyl‐2‐thioxo‐1,2‐dihydropyridine‐3,5‐dicarbonitrile (1) was allowed to react with halo compounds, acrylonitrile, chloroacetyl chloride, ethyl cyanoacetate, formamide, triethylorthoformate, or formic acid to give new derivatives of fused pyridines 2–22, respectively. Acetylation of compound 1 using acetic anhydride afforded product 23, which in turn underwent intramolecular cyclization in pyridine to give the corresponding pyrido[2,3‐_d_]pyrimidine 24. إقراء المزيد

2018-09-18 21:57:39 | الكلمات المفتاحية pyrrazole, fused pyridine, PASS INET, pyridine, Pyrimidine, phase transfer catalysis, pyrrole,
Synthesis  of  Some  New F used  P yridines  and  Prediction  their  Biological Activity via PASS INET
A new series of fused heterocyclic compounds containing pyridine moieties were prepared via the reaction of 2-amino-6-(methylthio)-4-phenylpyridine-3,5-dicarbonitrile with some halo reagents, active methylenes, acetic anhydride, phenylisothiocyanate, hydrazine hydrate or thioacetamide. Accompanied with Predictions of the activity spectra of some selected compounds using PASS INET.at Pa > 70%, showing high probability of Atherosclerosis treatment, Antineoplastic, DNA intercalator, Protein kinase inhibitor and ... إقراء المزيد

2018-09-18 21:51:09 | الكلمات المفتاحية antifungal activity, nitrotetrazole-5-carbaldehyde, Synthesis,
Synthesis and Antifungal Activity of Substituted Nitrotetrazole-5-Carbaldehyde Hydrazones
A series of nitrotetrazole-5-carbaldehyde hydrazones was synthesized and their antifungal activity against _Candida albicans_, _Microsporum canis_, and _Trichophyton rubrum_ was assessed. إقراء المزيد

2018-09-18 21:48:27 | الكلمات المفتاحية minimum inhibitory concentrati, nitrotetrazole-5-carbaldehyde, Synthesis, Antimicrobial activity,
Synthesis and Antimicrobial Activity of Substituted Nitrotetrazole-5-Carbaldehyde Hydrazones
A series of substituted -nitrotetrazole-5-carbaldehyde hydrazones were synthesized and tested for antimicrobial activity with respect to _Staphylococcus aureus_, _Streptococcus pneumoniae_, _E. coli_, _P. aeruginosa_, and _Micrococcus_. The minimum inhibitory concentrations were determined. إقراء المزيد

2018-09-18 21:53:10 | الكلمات المفتاحية Oxadiazole, White Crystal, Silver Salt, Dinitro, Cyanogen Bromide,
Synthesis of 2-(2-methyltetrazol-5-yl)-2,2-dinitroacetonitrile and its reaction with substituted nitrile N-oxides
A procedure of synthesis of 2-(2-methyltetrazol-5-yl)-2,2-dinitroacetonitrile has been developed and its reaction with substituted nitrile _N_-oxides has been investigated, proceeding by the mechanism of 1,3-dipolar cycloaddition and affording 2-methyl-5-[(1,2,4-oxadiazol-5-yl)(dinitro)methyl]-2_H_-tetrazoles. The latter react with KOH in ethanol forming the potassium salt of 2-methyltetrazol-5-yldinitromethane and substituted 5-hydroxy-1,2,4-oxadiazoles. إقراء المزيد

2018-09-29 20:42:37 | Heterocyclic organic chemistry
Heteocyclic I exam 05-2016
Q.1- Illustrate in equations the following reactions: a) Pyrrole with HCN/HCl. b) Exhaustive methylation of tetrahydropyrrole. c) Furfural with ethanolic KCN. d) Furan with maleic anhydride. e) Thiophene with n-butyl-lithium f) Indole with CHCl3/NaOH. g) Pyridine with methyl bromide. Q.2- a) Write ONE METHOD ONLY for the synthesis of the following: Thiophene – Indole – Coumarone – Thionaphthene إقراء المزيد

2018-09-29 20:40:31 | Carbohydrates
Carbohydrates exam 05 - 2016
Q.1- a) Explain by equations the synthesis of the following compounds from GLUCOSE: Gluconic acid – Sorbitol – Fructose – Saccharic acid – Arabinose b) Explain the following: (by equations and examples if possible) Invert sugar – Anomers – Epimerization Q.2-a) Give the evidences which led to the cyclic structure of glucose and discuss ONE METHOD for determination of its ... إقراء المزيد

2018-09-29 20:29:07 | Industrial Organic Chemistry
Nuclear, Dyes and Industrial exam_01-2016
Q1- a) Explain the cleaning action of soap and detergent. b) Illustrate by equations the synthesis of "Aniline" with mechanism, and use it to prepare the following: _i) p,p_-Methylene diphenyl diisocyanate (MDI). ii) Sulfadiazine. Q2-a) Explain by equations the synthesis of "DDT" starting from ethanol. b) "Sodium tripolyphosphate was the first important commercial builder in soaps and detergents". In the ... إقراء المزيد

2018-09-29 20:20:36 | Petroleum chemistry
Petroleum exam 01-2017
Q1- Explain the following: * SOLVENT treatment of kerosene. * The FLUID catalytic cracking process. * SULPHURIC ACID polymerization process. * The PLATFORMING Q2-Discuss the following: * CARBIDE THEORY which explain the origin of petroleum in nature. * Effect of SULPHUR compounds on gasoline. * HYDRODESULPHURIZATION إقراء المزيد

2018-09-29 20:15:51 | Polynuclear hydrocarbons
polynuclear exam_05-2017
Q.1- A) Deduce the structure of PHENANTHRENE and confirm it by PSCHORR synthesis. B) Illustrate in equations the following reactions: i) Ozonolysis of diphenyl. ii) 2-Naphthylamine with diazonium salt. iii) Benzaldehyde with ethanolic KCN. iv) 2-Naphthol with nitrous acid. v) Benzil with o-phenylenediamine. vi) Anthracene with excess sulfuric acid. Q.2- A) Explain by equations how can prepare the following from ... إقراء المزيد