Výsledky vyhledávání - "I. S. Abdel Hafiz"

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

Zobrazit plný text záznamu

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

Zobrazit plný text záznamu

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

Zobrazit plný text záznamu

ChemInform Abstract: 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: ChemInform. 30

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::6adc6522b56a977353e17bdbc2ae9275
https://doi.org/10.1002/chin.199944166

Zobrazit plný text záznamu

ChemInform Abstract: Nitriles in Heterocyclic Organic Synthesis: Synthesis of Pyrano[2,3-h]coumarins, Pyrano[3,2-c]coumarins, and Their Derivatives

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

Publikováno v: ChemInform. 31

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::1d5fb723355d019e4121f92ee934b2c5
https://doi.org/10.1002/chin.200015128

Zobrazit plný text záznamu

Vyhledávací nástroje:

Upřesnit hledání