Výsledky vyhledávání - "Osama M. A. Habib"

Pyrolysis of azetidinone derivatives: a versatile route towards electron-rich alkenes, C-1 allylation and/or homologation of aldehydes

Autor: Yehia A. Ibrahim, Osama M. A. Habib, Nouf S. Al-Hamdan, Nouria A. Al-Awadi, Osman M. E. El-Dusouqui

Publikováno v: RSC Advances 4 (2014), Nr. 40

Pyrolysis of beta-lactams and beta-thiolactams led essentially to stereoselective synthesis of the high energy electron-rich Z-alkenes. Extension of this methodology to the pyrolysis of 3-allyloxy derivatives gave a simple direct route to the synthet

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a73c8bc37b49132fcd55e5c7895fb675
https://doi.org/10.1039/c4ra01024h

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Synthesis, characterization and studies of new 3-benzyl-4H-1,2,4-triazole-5-thiol and thiazolo[3,2-b][1,2,4]triazole-5(6H)-one heterocycles

Autor: A. M. Mahmoud, Abd El-Wareth A. O. Sarhan, Osama M. A. Habib, Hassa N. A. H. Elsherif

Publikováno v: Journal of Heterocyclic Chemistry. 45:897-907

3-Benzyl-4-phenyl-1,2,4-triazole-5-thiol (1) was synthesized and used as starting material for preparation of 1,2,4-triazole bearing substituted thiosemicarbazides moiety (4a-d) in high yields. The thiosemicarbazides 4a-d were cyclized in basic mediu

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::bc356fb906a232ad42159e0c5f2efea4
https://doi.org/10.1002/jhet.5570450339

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Synthesis and Studies of Triazolothiadiazines. An Approach Toward New Biologically Active Heterocyclic Compounds

Autor: Osama M. A. Habib, Abd El-Wareth A. O. Sarhan, H. A. H. El-Sherif, A. M. Mahmoud

Publikováno v: Phosphorus, Sulfur, and Silicon and the Related Elements. 182:1757-1766

The first synthesis of the 1,2,4-triazolo[5,1-b][1,3,5] thiadiazine and some of its analogues, possessing a thiadiazino-s-triazole bicyclic ring system was performed starting from 2-benzyltriazole-5-thiol. The title compounds 6a–g were synthesized

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::fcf681ba675399d820c6b501ce70bcd6
https://doi.org/10.1080/10426500701313920

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One pot synthesis of novel thiazolo[3,2-b][1,2,4]triazoles: A useful synthetic application of the acidified acetic acid method

Autor: A. M. Mahmoud, Osama M. A. Habib, H. A. H. El-Sherif, Z. A. Hozien, Abd El-Wareth A. O. Sarhan

Publikováno v: Journal of Sulfur Chemistry. 27:65-85

Thiazolo[3,2-b][1,2,4]triazoles and some of its analogues were firstly synthesized starting from 3-benzyl-1,2,4-triazole-5-thiol (13). 3-Benzyl-1,2,4-triazole-5-thiol (13) was synthesized and reacted with aromatic ketones using the acidified acetic a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b817191b321cedb31c46d920214e5ce2
https://doi.org/10.1080/17415990500520908

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ChemInform Abstract: Pyrolysis of Azetidinone Derivatives: A Versatile Route Towards Electron-Rich Alkenes, C-1 Allylation and/or Homologation of Aldehydes

Autor: Osman M. E. El-Dusouqui, Yehia A. Ibrahim, Nouria A. Al-Awadi, Nouf S. Al-Hamdan, Osama M. A. Habib

Publikováno v: ChemInform. 45

Azetidinone and azetidinthione derivatives are transformed into valuable intermediates including electron-rich Z-olefins (III) and 4-pentenal derivatives [e.g. (VII)].

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::4a17a330fdcedf6b65099e8267188b50
https://doi.org/10.1002/chin.201452101

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Akademický článek

Synthesis, characterization and studies of new 3-benzyl-4 H-1,2,4-triazole-5-thiol and thiazolo[3,2- b][1,2,4]triazole-5(6 H)-one heterocycles.

Autor: Sarhan, Abdelwareth A. O., Elsherif, Hassa N. A. H., Mahmoud, Abdalla M., Habib, Osama M. A.

Publikováno v: Journal of Heterocyclic Chemistry; May2008, Vol. 45 Issue 3, p897-907, 11p

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