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Abdelmoniem, A. M., F. M. Sroor, M. A. Ramadan, S. A. S. Ghozlan, and I. A. Abdelhamid, "Hantzsch-Like One-Pot Three-Component Synthesis of Heptaazadicyclopenta [a, j] anthracenes: A New Ring System", Synlett: © Georg Thieme Verlag, 2020. Abstract
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Sanad, S. M. H., M. A. E. Hawass, A. H. M. Elwahy, and I. A. Abdelhamid, "Hantzsch synthesis of bis(1,4-dihydropyridines) and bis(tetrahydrodipyrazolo[3,4-b:4′,3′-e]pyridines) linked to pyrazole units as novel hybrid molecules", Synth. Commun. , vol. 50, issue 13, pp. 1982-1992, 2020. 020_synth_commun_2020.pdf
Hawass, M. A. E., S. M. H. Sanad, A. H. M. Elwahy, and I. A. Abdelhamid, "Hantzsch synthesis of bis (pyrido [2, 3-d: 6, 5-d'] dipyrimidines), bis (pyrimido [4, 5-b] quinolines), and bis (benzo [4, 5] imidazo [2, 1-b] quinazolines) linked to pyrazole units as novel hybrid molecules", Synthetic Communications, vol. 51, issue 12: Taylor & Francis, pp. 1899-1912, 2021. Abstract
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Hawass, M. A. E., S. M. H. Sanad, A. H. M. Elwahy, and I. A. Abdelhamid, "Hantzsch synthesis of bis (pyrido [2, 3-d: 6, 5-d'] dipyrimidines), bis (pyrimido [4, 5-b] quinolines), and bis (benzo [4, 5] imidazo [2, 1-b] quinazolines) linked to pyrazole units as novel hybrid molecules", Synthetic Communications, vol. 51, issue 12: Taylor & Francis, pp. 1899-1912, 2021. Abstract
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Sanad, S. M. H., M. A. E. Hawass, A. H. M. Elwahy, and I. A. Abdelhamid, "Hantzsch synthesis of bis (1, 4-dihydropyridines) and bis (tetrahydrodipyrazolo [3, 4-b: 4′, 3′-e] pyridines) linked to pyrazole units as novel hybrid molecules", Synthetic Communications, vol. 50, issue 13: Taylor & Francis, pp. 1982-1992, 2020. Abstract
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Sanad, S. M. H., M. A. E. Hawass, A. H. M. Elwahy, and I. A. Abdelhamid, "Hantzsch synthesis of bis (1, 4-dihydropyridines) and bis (tetrahydrodipyrazolo [3, 4-b: 4′, 3′-e] pyridines) linked to pyrazole units as novel hybrid molecules", Synthetic Communications, vol. 50, issue 13: Taylor & Francis, pp. 1982-1992, 2020. Abstract
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Abdelmoniem, A. M., M. G. M. Abdelrahman, S. A. S. Ghozlan, A. H. M. Elwahy, and I. A. Abdelhamid, "Hantzsch reaction with bis-indole-2,3-diones: Synthesis of novel bis-spirocyclic oxindole incorporating acridine, dipyrazolo[3,4-b:4',3'-e]pyridine and pyrido[2,3-d:6,5-d']dipyrimidine", Synthetic Communications, vol. 51, issue 12: Taylor & Francis, pp. 1814 - 1824, 2021///. Abstract

One-pot three-component cyclo-condensation reaction of bis(indole-2,3-diones) with dimedone, 3-methyl-1H-pyrazol-5(4H)-one, or 6-aminouracil in boiling acetic acid afforded bis-spirocyclic oxindoles linked to acridine, dipyrazolo[3,4-b:4',3'-e]pyridine, and pyrido[2,3-d:6,5-d']dipyrimidine, respectively.

Abdelmoniem, A. M., M. G. M. Abdelrahman, S. A. S. Ghozlan, A. H. M. Elwahy, and I. A. Abdelhamid, "Hantzsch reaction with bis-indole-2, 3-diones: Synthesis of novel bis-spirocyclic oxindole incorporating acridine, dipyrazolo [3, 4-b: 4', 3'-e] pyridine and pyrido [2, 3-d: 6, 5-d'] dipyrimidine", Synthetic Communications: Taylor & Francis, pp. 1-11, 2021. Abstract
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Abdelmoniem, A. M., M. G. M. Abdelrahman, S. A. S. Ghozlan, A. H. M. Elwahy, and I. A. Abdelhamid, "Hantzsch reaction with bis-indole-2, 3-diones: Synthesis of novel bis-spirocyclic oxindole incorporating acridine, dipyrazolo [3, 4-b: 4', 3'-e] pyridine and pyrido [2, 3-d: 6, 5-d'] dipyrimidine", Synthetic Communications: Taylor & Francis, pp. 1-11, 2021. Abstract
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Abdelmoniem, A. M., M. G. M. Abdelrahman, S. A. S. Ghozlan, A. H. M. Elwahy, and I. A. Abdelhamid, "Hantzsch reaction with bis-indole-2, 3-diones: Synthesis of novel bis-spirocyclic oxindole incorporating acridine, dipyrazolo [3, 4-b: 4', 3'-e] pyridine and pyrido [2, 3-d: 6, 5-d'] dipyrimidine", Synthetic Communications: Taylor & Francis, pp. 1-11, 2021. Abstract
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Abdelmoniem, A. M., M. G. M. Abdelrahman, S. A. S. Ghozlan, A. H. M. Elwahy, and I. A. Abdelhamid, "Hantzsch reaction with bis-indole-2, 3-diones: Synthesis of novel bis-spirocyclic oxindole incorporating acridine, dipyrazolo [3, 4-b: 4', 3'-e] pyridine and pyrido [2, 3-d: 6, 5-d'] dipyrimidine", Synthetic Communications, vol. 51, issue 12: Taylor & Francis, pp. 1814-1824, 2021. Abstract
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Abdelmoniem, A. M., M. G. M. Abdelrahman, S. A. S. Ghozlan, A. H. M. Elwahy, and I. A. Abdelhamid, "Hantzsch reaction with bis-indole-2, 3-diones: Synthesis of novel bis-spirocyclic oxindole incorporating acridine, dipyrazolo [3, 4-b: 4', 3'-e] pyridine and pyrido [2, 3-d: 6, 5-d'] dipyrimidine", Synthetic Communications, vol. 51, issue 12: Taylor & Francis, pp. 1814-1824, 2021. Abstract
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Abdelmoniem, A. M., M. G. M. Abdelrahman, S. A. S. Ghozlan, A. H. M. Elwahy, and I. A. Abdelhamid, "Hantzsch reaction with bis-indole-2, 3-diones: Synthesis of novel bis-spirocyclic oxindole incorporating acridine, dipyrazolo [3, 4-b: 4', 3'-e] pyridine and pyrido [2, 3-d: 6, 5-d'] dipyrimidine", Synthetic Communications, vol. 51, issue 12: Taylor & Francis, pp. 1814-1824, 2021. Abstract
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Abdelmoniem, A. M., A. M. Abdella, A. H. M. Elwahy, and I. A. Abdelhamid, "Hantzsch reaction with 6-Aminouracil: Synthesis of novel tetrakis(6-Aminouracil-5-yl)methanes and bis(decahydropyrido[2,3-d:6,5-d']dipyrimidine-Tetraones) linked to aliphatic or aromatic cores via ether-Amide or ester-Amide linkages", Arkivoc, vol. 2020, issue 8, pp. 136 - 149, 2020///. Abstract

One-pot three-component cyclo-condensation reaction of bis(aldehydes) containing ether-Amide or ester-Amide linkages with 6-Aminouracil in boiling acetic acid afforded tetrakis(6-Aminopyrimidine-2,4-diones) or bis(tetraoxodecahydropyrido[2,3-d:6,5-d']dipyrimidines) depending on the reaction conditions.

Abdelmoniem, A. M., H. F. Hammad, A. F. Darweesh, M. A. Abdelaziz, I. A. Abdelhamid, and A. H. M. Elwahy, "Hantzsch one-pot multicomponent synthesis of a novel series of bis(9,10-diarylhexahydroacridine-1,8-diones)", Synthetic Communications, vol. 51, issue 17: Taylor & Francis, pp. 2695 - 2712, 2021/07//. Abstract

Efficient procedures have been developed for the synthesis of novel series of bis(9,10-diaryl-hexahydroacridine-1,8-diones) in which the two acridine moieties were linked to aliphatic, aromatic, or heteroaromatic spacers via ether or ester linkages. The target products were obtained in good to excellent yields via a multi-component reaction of the appropriate aromatic amine, 5,5-dimethyl-1,3-cyclohexanedione, and the corresponding bis-aldehydes. The reactions were also proceeded to give the target products in good yields via a multi-component reaction of the appropriate cyclic enamines, and the corresponding bis-aldehydes under similar conditions. Bis-alkylation of the appropriate hexahydroacridine-1,8-dione with the corresponding dihalo compound in a basic medium was also proved to be an effective strategy for the synthesis of the target products. The multi-component reaction of the aromatic amine, bis-aldehydes, and barbituric acid or 1,3-dimethylbarbituric acid, instead of 5,5-dimethyl-1,3-cyclohexanedione, afforded the corresponding Knoevenagel condensation adducts in good yield and unfortunately, the expected bis-tetrahydropyrimido[4,5-b]quinolines could not be isolated.

Abdelmoniem, A. M., H. F. Hammad, A. F. Darweesh, M. A. Abdelaziz, I. A. Abdelhamid, and A. H. M. Elwahy, "Hantzsch one-pot multicomponent synthesis of a novel series of bis (9, 10-diarylhexahydroacridine-1, 8-diones)", Synthetic Communications, vol. 51, issue 17: Taylor & Francis, pp. 2695-2712, 2021. Abstract
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Abdelmoniem, A. M., H. F. Hammad, A. F. Darweesh, M. A. Abdelaziz, I. A. Abdelhamid, and A. H. M. Elwahy, "Hantzsch one-pot multicomponent synthesis of a novel series of bis (9, 10-diarylhexahydroacridine-1, 8-diones)", Synthetic Communications, vol. 51, issue 17: Taylor & Francis, pp. 2695-2712, 2021. Abstract
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Abdelmoniem, A. M., H. F. Hammad, A. F. Darweesh, M. A. Abdelaziz, I. A. Abdelhamid, and A. H. M. Elwahy, "Hantzsch one-pot multicomponent synthesis of a novel series of bis (9, 10-diarylhexahydroacridine-1, 8-diones)", Synthetic Communications, vol. 51, issue 17: Taylor & Francis, pp. 2695-2712, 2021. Abstract
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Fattah, M. A., S. Abuelenin, A. E. Hassanien, and J. - S. Pan, "Handwritten Arabic Manuscript Image Binarization Using Sine Cosine Optimization Algorithm", International Conference on Genetic and Evolutionary Computing: Springer International Publishing, pp. 273–280, 2016. Abstract
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Shaalan, K., and M. Attia, "Handling Unknown Words in Arabic FST Morphology", The 10th edition of the International Workshop on Finite State Methods and Natural Language Processing (FSMNLP 2012), San Sebastian, Spain, 23 July, 2012. Abstractunk_fsmnlp_2012-acl-anthology__short_04.pdf

A morphological analyser only recognizes words that it already knows in the lexical database. It needs, however, a way of sensing significant changes in the language in the form of newly borrowed or coined words with high frequency. We develop a finite-state morphological guesser in a pipelined methodology for extracting unknown words, lemmatizing them, and giving them a priority weight for inclusion in a lexicon. The processing is performed on a large contemporary corpus of 1,089,111,204 words and passed through a machine-learning-based annotation tool. Our method is tested on a manually-annotated gold standard of 1,310 forms and yields good results despite the complexity of the task. Our work shows the usability of a highly non-deterministic finite state guesser in a practical and complex application.

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