Výsledky vyhledávání - "S. Abdel Hafiz"

Akademický článek

New 1,3-diphenyl-1H-pyrazol-5-ols as anti-methicillin resistant Staphylococcus aureus agents: Synthesis, antimicrobial evaluation and in silico studies

Autor: Mohamed A.M. Abdel Reheim, Ibrahim S. Abdel Hafiz, Hala M. Reffat, Hend S. Abdel Rady, Ihsan A. Shehadi, Huda R.M. Rashdan, Abdelfattah Hassan, Aboubakr H. Abdelmonsef

Publikováno v: Heliyon, Vol 10, Iss 13, Pp e33160- (2024)

In the present work, two hybrid series of pyrazole-clubbed pyrimidine and pyrazole-clubbed thiazole compounds 3–21 from 4-acetyl-1,3-diphenyl-1H-pyrazole-5(4H)-ole 1 were synthesized as novel antimicrobial agents. Their chemical structures were tho

Externí odkaz: https://doaj.org/article/b4ce63c937724c4f9f32793e885d203e

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IMPROVEMENT OF BLASTING OPERATION IN SUKARI SURFACE MINE

Autor: Ramy A. Mosa, Mohamad. A. Yassin, Saeed S. Abdel-Hafiz S. Abdel-Hafiz

Publikováno v: Journal of Al-Azhar University Engineering Sector. 14:1403-1410

Detailed blasting data had been collected from Sukari gold mine.These data were arranged andcomputerized to feed a simulation software.DNA i-Blast is one of the powerful software forsimulating, analyzing, and prediction the blasting products.As fragm

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e8b3de4287148d3c8143511a743e5873
https://doi.org/10.21608/auej.2019.64263

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Akademický článek

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β-Enaminonitriles in Heterocyclic Synthesis: Synthesis of New 1,4-Dihydropyridine, Tetrahydropyridine, Nicotinonitrile and Aminopyrazole Derivatives

Autor: Mahmoud M. M. Ramiz, Ibrahim S. Abdel Hafiz, Mohamed A. Elian

Publikováno v: Journal of the Chinese Chemical Society. 59:758-767

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e325a623acdaf029d932afe99d34864c
https://doi.org/10.1002/jccs.201100537

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SOIL AND WATER MANAGEMENT FOR WHEAT PRODUCTION IN THE GEMMEIZA AREA

Autor: S. Abdel– Hafiz, M. El-Arqan, M. Badawi, H. Meshref

Publikováno v: Journal of Soil Sciences and Agricultural Engineering. 1:621-930

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5f308c702ddae932f7b98da7d739eeab
https://doi.org/10.21608/jssae.2010.75447

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UTILITY OF N-2-PYRIDYL–3-OXOBUTANAMIDE IN HETEROCYCLIC SYNTHESIS: SYNTHESIS OF NEW DIHYDROPYRIDINE, FUSED PYRIDINE, PYRIDOPYRIDONE, PYRIDAZINE AND PYRIDOPYRIMIDINETHIONE DERIVATIVES

Autor: A. E. Khodair, I. S. Abdel Hafiz, Safaa M. Baker, A. M. Hussein

Publikováno v: Al-Azhar Bulletin of Science. 19:119-134

2-Aminopyridine was fused with ethyl acetoacetate for two hours to yield the N-2-pyridyl–3-oxobutanamide (1). However, when the reaction time was increased to 5 hours compound 3 was obtained. Condensation of 3 with benzaldehyde gave 4. The reaction

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e179a6294f6f39d8fe62ccd360ec808f
https://doi.org/10.21608/absb.2008.10502

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Phenylacetone as Building Blocks in Heterocyclic Synthesis: Synthesis of Polyfunctionally-Substituted Pyridines, and fused Pyridines

Autor: S. Abdel Hafiz, Mohamed Hilmy Elnagdi, E. A. Ishak, A. A. Atalla, A. M. Hussein

Publikováno v: Phosphorus, Sulfur, and Silicon and the Related Elements. 182:2897-2917

Many pyridinethiones are biologically active. In view of our interest in developing efficient syntheses of polyfunctionally substituted heteroaromatics utilizing the readily obtainable enaminone 3 as starting materials. So, treatment of enaminone 3 w

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::824407d03c6ad30c6cdfdbc17af0a8f6
https://doi.org/10.1080/10426500701542858

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Nitriles in Heterocyclic Organic Synthesis: Synthesis of Pyrano[2,3-h]coumarines, Pyrano[3,2-c]coumarines, and their Derivatives

Autor: A. M. Hussein, V. F. F. Mahmoud, I. S. Abdel Hafiz

Publikováno v: Zeitschrift für Naturforschung B. 54:1568-1572

Several new 4H-pyrano[2,3-h]coumarines 5a-e were prepared by the reaction of 7-hydroxycoumarine with cinnamonitriles 1. Also, the reaction of 7-hydroxycoumarine with a mixture of aliphatic aldehydes and malononitrile afforded compounds 5f,g. Similarl

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c1d2c005c29282567c0daedf77225a42
https://doi.org/10.1515/znb-1999-1215

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Alkyl Heteroaromatics as Building Blocks in Organic Synthesis: The Reactivity of Alkyl Azoles toward Electrophilic Reagents

Autor: A. M. Hussein, A. A. Hassanien, I. S. Abdel Hafiz

Publikováno v: Zeitschrift für Naturforschung B. 54:923-928

Oxazolone (1) couples with aromatic diazonium salts to yield the arylhydrazones (3a-c). Compound 3 reacts with aniline to give aryl hydrazone (5). Compound 5 was also obtained via converting 1 into the imidazolone (4) and subsequent treatment of 4 wi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::49fbf71ed3abb00e109f582f6107d466
https://doi.org/10.1515/znb-1999-0716

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New fused pyrimidines of potential biosignificant interest. Syntheses and molecular modelling studies

Autor: Hatem M, Gaber, Ibrahim S Abdel, Hafiz, Elsawy Karim, M, Sherif M, Sherif

Publikováno v: Acta chimica Slovenica. 57(1)

New derivatives of thieno[3,2-d]pyrimidine and thieno[2,3-b]pyrrole 5a,b and 6a,b, respectively, were obtained from the corresponding thiophene-2-carboxamides 4a,b. On the basis of compounds 5b, 6a and 6b, two novel series of tricyclic- and tetracycl

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::4df4f08dfa5a7e19a19ffd56096275c7
https://pubmed.ncbi.nlm.nih.gov/24061677

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