W
W. Asker
Researcher at Cairo University
Publications - 13
Citations - 111
W. Asker is an academic researcher from Cairo University. The author has contributed to research in topics: Double bond & Reagent. The author has an hindex of 8, co-authored 13 publications receiving 109 citations.
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Journal ArticleDOI
Reactivity of unsaturated centres in heterocycles and chalkones toward diazoalkanes
TL;DR: In this article, the 4-arylidene derivatives of five-membered heterocycles were treated with diazomethane and cyclopropane formation was demonstrated.
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Reactions with 1(2H)-phthalazinones, 4,5-dihydro-3(2H)-pyridazinones and 3-pyrazolin-5-ones
TL;DR: The Mannich-bases were also obtained by reaction of the appropriate amines with the corresponding chloromethyl- (If), or hydroxymethylphthalazinone derivatives (Ie).
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Synthesis of substituted linear furano[2,3-g][1]benzopyrones and [3,2-b]thianaphtenopyrones
Ahmed Mustafa,W. Asker,O. H. Hishmat,Mohamed I. Ali,Abdel Kader Mansour,N.M. Abed,K. H. M. A. Khalil,S. M. Samy +7 more
TL;DR: In this paper, the linear foranopyrones: 2,3-diphenyl-8-hydroxy-6H-furano[2,3=g][1]-benzopyran-6-one (I) and 2.3-methyltimethy-6methy;-8H-furano [2, 3-g] (II) are described.
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Das Verhalten von Oxazolinonen‐(5) und Thiazolinonen‐(5) gegen N‐Phenyl‐hydroxylamin und Phenylhydrazin
TL;DR: In this paper, the 2-Phenyl-4-alkyliden-oxazolinone-(5) 1a-f reagieren mit N-Pphenyl-hydroxylamin wahrscheinlich zu den 1.2.5-oxadiazinonen-(3) 5a−f.
Journal ArticleDOI
Behaviour of the hetero-ring in substituted 2-phenylimino-4-thiazolidinones towards the action of organomagnesium compounds
TL;DR: In this article, the authors showed that 5-arylidene derivatives of 2-phenylimino-4-thiazolidinones with Grignard reagents do not open the hetero-ring, the double bond of the lateral chain, the CC bond and the C ǫ n bond of Ic, enter into reaction, yielding colourless products, believed to have structure III.