Zobrazeno 1 - 10
of 17
pro vyhledávání: '"Mariam Abdullah Al-Sheikh"'
Publikováno v:
Molecules, Vol 18, Iss 1, Pp 535-544 (2013)
Benzylcyanide and 4-nitrobenzylcyanide condensed with triethyl orthoformate and piperidine or morpholine to yield 2-aryl-2-piperidinyl or 2-morpholinylacrylonitriles. These coupled with aromatic diazonium salts to yield the 2-arylhydrazno-2-arylethan
Externí odkaz:
https://doaj.org/article/777cc1af921a4e7db8e42689c4460436
Publikováno v:
Molecules, Vol 15, Iss 6, Pp 4359-4368 (2010)
An efficient and convenient synthesis of pyrrolidinones and pyridinones utilizing enamino esters as starting material has been described. The structures of the compounds obtained were confirmed by spectral and elemental analyses.
Externí odkaz:
https://doaj.org/article/fd547b6647334f8cb1cd56596e54d8a0
Autor:
Ramadan Ahmed Mekheimer, Mariam Abdullah Al-Sheikh, Hanadi Yousef Medrasi, Najla Hosain Hassan Alsofyani
Publikováno v:
Molecules, Vol 23, Iss 3, p 619 (2018)
A convenient, fast and environmentally benign procedure for the synthesis of a new series of highly functionalized N-alkylated pyridines as privileged medicinal scaffolds was developed via a unique three-component reaction of easily available aromati
Externí odkaz:
https://doaj.org/article/64a70e05faaf4337aa9000549dffc470
Publikováno v:
Molecules, Vol 14, Iss 11, Pp 4406-4413 (2009)
2-Pyridylacetonitrile (1) couples with aromatic diazonium salts to yield arylhydrazones 2a-c, that were shown to exist in the syn-form 2 rather than the anti-form 4. Compounds 2a,c reacted with hydroxylamine in refluxing DMF to yield the interesting
Externí odkaz:
https://doaj.org/article/11b1344ea71d4b66b3ea627867d28730
Publikováno v:
RSC Advances. 10:19867-19935
Fused tetracyclic systems containing a quinoline nucleus represent an important class of heterocyclic bioactive natural products and pharmaceuticals because of their significant and wide-spectrum biological properties. Several of these compounds have
Autor:
Kamal Usef Sadek, Hanadi Y. Medrasi, Mariam Abdullah Al-Sheikh, Ramadan Ahmed Mekheimer, Ghayah A. Bahatheg
Publikováno v:
Current Organic Chemistry. 23:823-851
We herein describe the first review which aims to focus soberly the various synthetic methods and chemical reactions of chloroquinoline-3-carbonitrile derivatives. The reactions are subdivided into groups that cover reactions of chloro substituent at
Publikováno v:
Molecular Diversity. 22:159-171
An easy, efficient and one-step synthesis of the versatile, hitherto unreported of polyfunctionally substituted benzo[c][2,7]naphthyridines 4a-c is described. The reaction of 4a-c with sodium azide gives the corresponding tetracyclic ring system 6a-c
Publikováno v:
Synthetic Communications. 47:1052-1064
A novel, simple, and efficient synthetic methodology for the synthesis of hitherto unreported tetracyclic 10-amino-6,9-disubstituted-[1,2,4]triazino[4′,3′:1,5]pyrazolo[4,3-c]quinolines, in one step...
Autor:
Najla Hosain Hassan Alsofyani, Hanadi Y. Medrasi, Ramadan Ahmed Mekheimer, Mariam Abdullah Al-Sheikh
Publikováno v:
Molecules; Volume 23; Issue 3; Pages: 619
Molecules : A Journal of Synthetic Chemistry and Natural Product Chemistry
Molecules, Vol 23, Iss 3, p 619 (2018)
Molecules : A Journal of Synthetic Chemistry and Natural Product Chemistry
Molecules, Vol 23, Iss 3, p 619 (2018)
A convenient, fast and environmentally benign procedure for the synthesis of a new series of highly functionalized N-alkylated pyridines as privileged medicinal scaffolds was developed via a unique three-component reaction of easily available aromati
Publikováno v:
Journal of Heterocyclic Chemistry. 53:1159-1167
2-Aryl-hydrazononitriles 3a, 3b, 3c were prepared by coupling 3-ethylthio-5-cyanomethyl-4-phenyl-1,2,4-triazole (1) with diazonium salts 2a, 2b, 2c. Reacting 3a, 3b, 3c with both ethyl bromoacetate (4a) and 4-bromobenzyl bromide (4b) in DMF, in the p