Zobrazeno 1 - 10
of 28
pro vyhledávání: '"Nora M. Rateb"'
Autor:
Nora M. Rateb
Publikováno v:
Journal of Heterocyclic Chemistry. 51:1349-1356
6-(2-Thienyl)-4-(trifluoromethyl)-1H-pyrazolo[3,4-b]pyridine-3-amine reacted with different active methylene compounds to afford pyridopyrazolopyrimidine derivatives. On the other hand, it reacted with some halo compounds to give the imidazo[1′,2
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3bc1cf887b93f0cbac869373862b6936
https://doi.org/10.1002/jhet.1799
https://doi.org/10.1002/jhet.1799
Publikováno v:
Nucleosides, Nucleotides and Nucleic Acids. 32:493-509
Two series of novel 3-cyano-2-(2,3,4,6-tetra-O-acetyl-β-D-glucopyranosyloxo) pyridines and 3-cyano-2-(2,3,5-tri-O-acetyl-β-D-ribofuranosyloxy)-4-trifluromethyl-6-phenyl pyridine were synthesized using efficient microwave methods. The targeted compo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8fcf1aa4b7a516f0cffff9ea7ec1807f
https://doi.org/10.1080/15257770.2013.827206
https://doi.org/10.1080/15257770.2013.827206
Publikováno v:
hc. 18:135-141
Two series of novel 3-cyano-2-(2′′,3′′,4′′-tri-O-acetyl-β-D-arabinopyranosyloxy)pyridones 5a–h and 9a,b were synthesized. Microwave irradiation has been used to obtain these products in high yield under milder conditions by the reactio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8542b6a7211f5f437f61efca057ac11d
https://doi.org/10.1515/hc-2012-0091
https://doi.org/10.1515/hc-2012-0091
Autor:
Nora M. Rateb
Publikováno v:
Journal of Sulfur Chemistry. 32:611-622
4,4,4-Trifluoro-1-(thiophen-2-yl)butane-1,3-dione was reacted by grinding with cyanothioacetamide and cyanoacetamide under solvent-free conditions at 25 °C to give pyridine-2(1H)thione/one derivatives in excellent yields. These compounds were furthe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5bc20ffcb61d53975ab18fe7a993e52c
https://doi.org/10.1080/17415993.2011.628994
https://doi.org/10.1080/17415993.2011.628994
Publikováno v:
Journal of Sulfur Chemistry. 32:345-354
3-Cyano-2(1H)-pyridinethiones are of interest because of their use as intermediates for the synthesis of biologically active polycyclic compounds 1 2. Numerous thieno[2,3-b]pyridines have been inve...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::132396af57c9284f46efe4f7fe401419
https://doi.org/10.1080/17415993.2011.593635
https://doi.org/10.1080/17415993.2011.593635
Publikováno v:
Green Chemistry Letters and Reviews. 4:225-228
An improved green Knoevenagel condensation of various aromatic aldehydes with 4-thiazolidinones in the presence of anhydrous ammonium acetate can be achieved by grinding at room temperature in the absence of solvents. This process is simple, efficien
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dc317a218ea46dcd118d1483d2d6ab5c
https://doi.org/10.1080/17518253.2010.544330
https://doi.org/10.1080/17518253.2010.544330
Autor:
Nora M. Rateb, Hussein F. Zohdi
Publikováno v:
Synthetic Communications. 39:2789-2794
An improved Claisen–Schmidt condensation reaction of methyl ketones and aromatic aldehydes can be achieved by grinding at room temperature in the absence of solvents. This process is simple, efficient, economical, and environmentally benign compare
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::63cbd408e1e37e110885ee0c76ecdb51
https://doi.org/10.1080/00397910802664244
https://doi.org/10.1080/00397910802664244
Autor:
Nora M. Rateb
Publikováno v:
Phosphorus, Sulfur, and Silicon and the Related Elements. 182:2393-2407
Thieno[2,3-b]pyridines 7, 8, and 10 could be obtained via the S-alkylation of 3-cyano-4,6-di-2-furyl-2(1H)pyridinethione (3) with a variety of alkylating agents. These compounds were conveniently converted into novel pyrido[3′,2′:4,5]thieno[3,2-d
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::29db104541af82e80fb76c5fa0f39250
https://doi.org/10.1080/10426500701501276
https://doi.org/10.1080/10426500701501276
Autor:
Nora M. Rateb
Publikováno v:
ChemInform. 46
Convenient methods for the synthesis of the title heterocycles and related heterocyclic systems starting from aminopyrazolopyridine and -thienopyridine derivatives, resp., are given.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::42d6077eb6e925e9a6af80e1adc1e1d9
https://doi.org/10.1002/chin.201511034
https://doi.org/10.1002/chin.201511034
Autor:
Nora M. Rateb
Publikováno v:
Phosphorus, Sulfur, and Silicon and the Related Elements. 180:2361-2372
Hydrazonoyl halides 4a – g reacted with methyl carbodithioate 3 thioanilide 10 to give 1,3,4-thiadiazoles { 5a–g and 13a–g ,} respectively. Thioanilide 10 reacted with ω-bromoacetophenones 14a – e to give the acyclic product 15a – e , whic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::39be1b0647231fd70bd7a5b028debc99
https://doi.org/10.1080/104265090921083
https://doi.org/10.1080/104265090921083