Zobrazeno 1 - 10 of 10 pro vyhledávání: '"Nadia K. El‐Aasar"'
1
Reaction of (E)-3-(Benzo[d][1,3]dioxol-5-yl)-2- Cyanoacryloyl Chloride with Nucleophilic Reagents Containing Nitrogen and Sulfur
Autor: Nadia K. El‐Aasar, Ahmed K. El-Ziaty, S. A. Shiba, Hana'a A. Al-Saman
Publikováno v: Phosphorus, Sulfur, and Silicon and the Related Elements. 185:1645-1657
(E)-3-(Benzo[d][1,3]dioxol-5-yl)-2-cyanoacryloyl chloride was reacted with nucleophilic reagents containing nitrogen and sulfur to give new acryloyl amides, imides, thioesters, and heterocyclic systems. Some of these products showed moderate activiti
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::bbd449740237f2b0bb58bc28fcbba1ba
https://doi.org/10.1080/10426500903176547
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2
EXTRUSION OF SULFUR IN THE REACTIONS OF HYDRAZINE HYDRATE WITH 5-(2-ARYL-2-OXOETHYLIDENE)-3-(2-METHOXY-PHENYL)-2-THIOXOTHIAZOLIDIN-4-ONES
Autor: Nadia K. El‐Aasar
Publikováno v: Al-Azhar Bulletin of Science. 19:161-170
Reactions of 3-substituted-5-(2-aryl-2-oxoethylidene)-2-thioxothiazolidin-4-ones 2a, b with 2.5 equiv. of hydrazine hydrate were carried out with reflux and/or at room temperature. Both of these conditions gave 4-(3-aryl-4,5-dihydro-1H-pyrazole-5-car
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d7e0fbc8311b685a6b38e8a76bc0ae16
https://doi.org/10.21608/absb.2008.10821
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3
Uses of Piperonal in the Synthesis of Novel Prop-2-Enoyl Amides, Esters, Heterocyclic Systems and Study of their Antibacterial Activities
Autor: Nadia K. El‐Aasar, Hana'a A. Al-Saman, S. A. Shiba, Ahmed K. El-Ziaty
Publikováno v: Journal of Chemical Research. 2008:500-506
Novel ( E)-3-(benzo[d][1,3]dioxol-5-yl)-2-cyanoacryloyl chloride 4 was condensed with several mono-; 1,2-; 1,3- and 1,4-bi-nucleophilic reagents containing nitrogen and oxygen to give new 2-propenoylamide and ester derivatives. Some of these amides c
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::59615a3afc0a924d88244050d2136be7
https://doi.org/10.3184/030823408x340834
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4
Synthesis of new thiazolidine and imidazolidine derivatives of pharmacological interest
Autor: Nadia K. El‐Aasar, Khaled F. Saied
Publikováno v: Journal of Heterocyclic Chemistry. 45:645-652
The hitherto unknown 5-(2-aryl-2-oxoethyl)-4-oxo-1,3-thiazolidines 1a-l have been synthesized viacycloaddition process between thiourea and/or its derivatives with 3-aroylpropenoic acids. 1H NMR spectra revealed the presence of 1a-c as a tautmeric mi
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::adbdc1861e10471fb3f422490cd7b025
https://doi.org/10.1002/jhet.5570450302
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5
Thiation of new 5-(2-aryl-2-oxoethyl)-2,4-dioxo-1, 3-thiazolidines
Autor: Khaled F. Saied, Nadia K. El‐Aasar
Publikováno v: Journal of Sulfur Chemistry. 29:43-52
The hitherto unknown 5-(2-aryl-2-oxoethyl)-3-substituted-2,4-dioxo-1,3-thiazolidines 2 and 5-(2-aryl-2-oxoethylidene)-3-aryl-2,4-dioxo-1,3-thiazolidines 4 have been prepared from their 2-thioxo- homologues 1 and 3, respectively, via treatment with Cr
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::73863884f341c457e721f2803c819ecd
https://doi.org/10.1080/17415990701784642
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8
ChemInform Abstract: Uses of Piperonal in the Synthesis of Novel Prop-2-enoyl Amides, Esters, Heterocyclic Systems and Study of Their Antibacterial Activities
Autor: S. A. Shiba, Nadia K. El‐Aasar, Ahmed K. El-Ziaty, Hana'a A. Al-Saman
Publikováno v: ChemInform. 40
O. The mass spectra were determined using MP model MS-5988 and Shimadzu single focusing mass spectrophotometer (70 eV). Elemental analysis were investigated by Elementar analyser Vario EL III. Physical data are reported in Table 1, The solid separate
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::66c88feb14be3aadc1930629cfdd9d3d
https://doi.org/10.1002/chin.200905030
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9
ChemInform Abstract: Synthesis of New Thiazolidine and Imidazolidine Derivatives of Pharmacological Interest
Autor: Khaled F. Saied, Nadia K. El‐Aasar
Publikováno v: ChemInform. 39
The hitherto unknown 5-(2-aryl-2-oxoethyl)-4-oxo-1,3-thiazolidines 1a-l have been synthesized viacycloaddition process between thiourea and/or its derivatives with 3-aroylpropenoic acids. 1H NMR spectra revealed the presence of 1a-c as a tautmeric mi
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c554d39b2d62149ac55e56d90ffd0248
https://doi.org/10.1002/chin.200836129
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10
Stereochemistry of the [4 + 2] Cycloaddition Reactions of 5-Arylmethylene-2,4-Dithioxo-1,3-Thiazolidines with Acrylonitrile, 1-Ethoxy-3-Phenyl-E-2-Propen-1-One and 3-Phenyl-E-2-Propen-1-One
Autor: Mohamed T. Omar, Nadia K. El‐Aasar, Khaled F. Saied
Publikováno v: Journal of Chemical Research. 2001:460-460
The [4 + 2] cycloaddition reactions of 5-arylmethylene-2,4-dithioxo-1,3-thiazolidines with different dienophiles and separation of pure stereoisomeric products are reported.
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::cfb4b8fe2759cc6ba59c0de389ee8c67
https://doi.org/10.3184/030823401103168668
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