Zobrazeno 1 - 10 of 50 pro vyhledávání: '"Wadie Tadros"'
1
Steroids. Part I. Selective Hydrogenation of Ergosterol and its Acetate
Autor: Adel Louis Boulos, Wadie Tadros
Publikováno v: Helvetica Chimica Acta. 58:668-671
Selective hydrogenation of ergosterol or its acetate in solution in different solvents over Raney nickel to give 5α-ergosta-7,22-dien-3β-ol or its acetate can be controlled by the addition of paraformaldehyde, acetaldehyde, benzaldehyde, 4-dimethyl
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::6fe23f7ff625213f702101328e1b400e
https://doi.org/10.1002/hlca.19750580303
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2
Reactions with Stilbenes and Related Derivatives. Part I. Reactions of 1, 2-Dihalogeno-1, 2-bis-(4-methoxyphenyl)ethanes with Alcohols
Autor: Wadie Tadros, Moheb Sadek Ishak, Raouf Ramzi Tadros
Publikováno v: Helvetica Chimica Acta. 59:1925-1930
The reaction of 1, 2-dibromo-1, 2-bis(4-methoxyphenyl)ethane with alcohols was associated with rearrangement to give the corresponding bis(4-methoxyphenyl)acetals. In boiling ethylene glycol 4,4′-dimethoxy-deoxybenzoin was also obtained due to an a
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::82d7a44abf84c3184fc08d71a79652a4
https://doi.org/10.1002/hlca.19760590603
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4
Addition of Xanthenyl and Thioxanthenyl Halides to Asymmetric Diarylethylenes and Their 2-Halogeno-Derivatives
Autor: Nadia Fouad Abdul-Malik, Alfy Badie Sakla, Wadie Tadros, Sami Bassili Awad
Publikováno v: Helvetica Chimica Acta. 56:1829-1837
Xanthenyl and thioxanthenyl halides added readily to asymmetric diarylethylenes and their 2-halogeno-derivatives to give after dehydrohalogenation 1,1-diaryl-2-[xanthen(orthioxanthen)-9-yl]-ethylenes and 1,1-diaryl-2-halogeno-2-[xanthen(or thioxanthe
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9fae34d6169539cd7ddc604612361307
https://doi.org/10.1002/hlca.19730560602
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7
Pinacol-Pinacolone Rearrangement of 1, 2-Di-(p-methoxyphenyl)-ethane-1, 2-diol and Bis-(4-methoxyphenyl)-acetaldehyde in Acid Media
Autor: Abdul-Aziz Amine Helmy, Sami Bassili Awad, Alfy Badie Sakla, Wadie Tadros
Publikováno v: Helvetica Chimica Acta. 55:2808-2812
1, 2-Di-(p-methoxyphenyl)-ethane-1, 2-diol gave in acid media bis-(4-methoxy-phenyl)-acetaldehyde, 4-4′-dimethoxy-deoxybenzoin, and 1, 2-di-(p-methoxyphenyl)-ethylene oxide; their respective yields being influenced by at least 3 factors: (i) the ac
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::718d0b07691ac00b2f310745f5ba8cdc
https://doi.org/10.1002/hlca.19720550810
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8
Addition of Diarylmethyl Halides to asymmetric diarylethylenes and conversion of the tetra-arylprop-1-enes to tetra-arylallenes
Autor: Abdul Aziz Amin Helmy, Alfy Badie Sakla, Wadie Tadros, Suzan Ibrahim Aziz
Publikováno v: Journal f�r Praktische Chemie. 314:793-798
Diarylmethyl bromides added to asymmetric diarylethylenes to give the corresponding 1,1,3,3-tetra-arylprop-1-enes 3. Bromination of these propenes, gave 2-bromoprop-1-enes 4 which were readily converted with ethanolic potassium hydroxide to the allen
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::50b48433643825a89051e9c097a21486
https://doi.org/10.1002/prac.19723140512
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10
ChemInform Abstract: THE ALDEHYDE KETONE REARRANGEMENT. REARRANGEMENT OF BIS(4-METHOXYPHENYL)ACETALDEHYDE INTO 4,4′-DIMETHOXYDEOXYBENZOIN
Autor: Wadie Tadros, Raouf Ramzi Tadros, Sami Bassili Awad
Publikováno v: Chemischer Informationsdienst. 7
The formyl carbonyl group in bis(4-methoxyphenyl)-acetaldehyde does not contribute to the formation of the carbonyl group in 4,4′-dimethoxydeoxybenzoin when the former rearranges to the latter by treatment with 50% (w/w) sulfuric acid.
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::7b456262518778e5bda6849d60fae415
https://doi.org/10.1002/chin.197629117
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